MILITARY STANDARD TEST AND INSPECTION OF CRANE TRUCK

●

●

MIL-STD-26211March 1957

MILITARY STANDARD

●TEST AND INSPECTION OF

CRANE TRUCK,

SOLID6

WAREHOUSE, ELECTRIC

RUBBER TIRES

●

UNTEDSTATESGOVERNMENTPRINTINGOFFICE

WASHINGTON

ForMI, bytheSuxrhtend,ntc.fDwum,ntaU.8.Gov-mn,ntPrintingOIBC..W-hi..tc..26,D.C. - Price80cer.b

Downloaded from http://www.everyspec.com

MIL-STD-26211 March 19S7

OFFICE OF THE ASSISTANT SECRETARY OF DEFENSE

WASHINGTON 2S, D. C.

Supplyand Logistics

TEST AND ~SPE~ION

OF

CRANE TRUCK, WAREHOUSE, ELE~RI~ SOLID RUBBER TIRES

MILSTD-262 11 March 1957

1.Thisstandardhas beenapprovedby theDepartmentof Defenseandismandatoryfornseby theDepartmentsoftheArmy, theNavy,andtheAirForce,effective15April1957.

2.Inaccordancewithestablishedprocedure,theStandardizationDivi-sionhasdesignatedtheQuartermasterCorps,theBureauofSuppliesandAccounts,and theAir Force,respectively,as Army-NJavy-AirForcecus-todiansofthisstandard.

3.Recommended corrections,additions,or deletionsshouldbe ad-dresaedtotheStandardizationDivision,OfficeoftheAssistantSecretaryofDefense(Supplyand Logistics),Washington25,D. G.

● 1

“1

●“

ii


MIL-STD-26211 March 1957

1.

2.

3.

4.

4.1

4.2

4.2.1

4.2.2

4.2.3

4.3

4.4

4.5

4.6

4.7

5.

5.1

5.1.1

5.1.2

5.1.3

5.1.4

5.1.5

5.2

5.2.1

5.2.2

5.3

5.3.1

5.3.2

5.3.3

5.3.4

5.3.5

CONTENTS

SCOPE

REFERENCED DOCUMENTS

DEFINITIONS

GENERAL REQUIREMENTS

Requirementsforapproval

Equipmentoperators

Equipmentoperators

Operatorqualification

Operatorindoctrination

Testlocation

TestOfficer

Ambienttemperature

Contractor’srepresentatives

Officialtestreport

DETAILED REQUIREMENTS

Pre-test

Description

Standardprocedures

Preventivemaintenanceserviceandinspectionsprocedures

Checklist

Pre-TestInspectiontests

Performancetest

Layoutofcourse

Standardprocedures

Post-test

When given

Composition

Descriptionofposttestinspectiontests

Post-testinspectionform

CommutatorDamage

. . .m



LIST OF DRAWINGS

L

M

N

E-4

F

G

P

Q

4,000Pound StandardCraneTestLoad



Proposedindoortestcourseforcranetrucks

Detailsofobstacleblockconstruction

Ramp design

Detailsofloadpositions1,2,and3

Detailsofloadpositions4,5,and 6

CHECK LIST AND SHEETS

L F’re.testinspection checklist

2. Pre-testinspectiontestchecksheet

3. Post-testinspectiontestchecksheet

RECORDING FORMS

1. Hourlytimerecordsheet

2. Post-testinspectionform

TEST FORMS

2G

5G

7G

8G

14G

15G

16G

17G

SteeringWheel

TowingHooka

Speed

SlopeAscension

Stability

Wear ofSteeringMechanism

Acceleration

StoppingDistance

●

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iv


eTEST AND INSPECTION


●CRANE TRUCK, WAREHOUSE,

1.SCOPE

1.1Scope.Thisstandardcoversthetestingand inspectionof equipmentas listedinSpecificationMIL-C-3988.

2.REFERENCED DOCUMENPS

● t“2.1Specifications.The followingspecifiw+Ionsand publicationsoftheissueineffecton dateofinvitationforbids,form a partofthisstandard.

SPECIFICATIONS

MILITABY

GMIL-C-3988-Crane Truck, Ware-

house,E1ectriGSolidRubber Tires.

STANDARDS

MILITARY

MS–15367 — Batteries, Storage forElectric Operated In-dustrial Trncks andTractore.

PUBLICATIONS

MILITARY

Joint Storage and Materials Handling

Manual

TM–743-ZOO— Departmentof theArmy TechnicalMannal

NAVSANDA Publication284—Departmentof the Navy

AFM 67-3— Department of theAirForce

NAVMC 1101— U. S. MarineCorps.JointPublication.

1

OF

ELECTRIC SOLID RUBBER TIRES

NAVSANDA Publication 249 —Storage and Materials HandlingHandbook

(Copiesof specifications and publications requiredby contractors in connection with specific procure-ment functions should be obtained from the procu-ring activity or as directed by the Contracting

Officer.)

3. DE~INITIONS. Not applicable.

4. GENERAL REQIJIREMENTS

4.1 Requirements for approval. Items of

equipment tested and inspscted under thisskandard shall pass the following tests andinspections outlined berein:

A. Pre-Test

B. Performance Test

C. Post-Test

4.2Equipmentoperahrs.

4.2.1Equipment opwatem. Equipment op-erators shall be furnished by the governmentto assist the Test Officer in conducting thetest and inspection outlined in this standard.

4.2.2 Operator qrdifieation. Operators as-signed for testing the equipment under theprovisions of this standard shall have com-pleted satisfactorily the applicable portionsof the course entitled “On-The-Job TrainingCourse for Operatore of Materials HandlingEquipment”, Joint Storage and MaterialeHandling Manual. He shall have available toshow to the contractor’e representatives ifrequested, his “Standard Operator’s Permit”(DDForm 313), or its equivalent, for thetype of equipment under test.


MIL-STD-26211 March 1957”

4.2.3 Operator indoctrination. Operatorsprovided for testing any machine under pro-visions of this standard shall be required todrive the machine through the appropriatetest course until he has achieved sufficientproficiency in operating the machine, Thkwarmup period shall last for no more thantwo hours per driver. During it, the con-tractor’e repreeentative will be permitted toinform each driver of the proper techniqueto he used in operating the machine to achievemaximum performance.

4.3 Test lecation. The test location will heae “designated by the Contracting Officer.

4.4 Test 05cer. The test officer shall be ap-pointed by the Department of Defense andehall exercise full authority in directing thebmt.

4.5 Ambient temperature. Temperature ofthe surrounding atmosphere may range from40° to 104”F. inchreive. If the temperaturedrops below or rises above this range the testwill be discontinued until the temperaturereturns to this range.

4.6 Contractor’s representatives. Any con-tractor whose machine is being tested inaccordance with the provisions of this stand-ard will be permitted to have present repre.sentatives to witness the test and inspectionand assist the Test Officer (upon request).

4.7 Official test report. An official report ofthe test and inspection will be prepared. Itwill include records of the pre-teet, perform-ance testa, post-test and such other teets aswere deemed necessary together with a state-ment from the Test Ofdcer intilcathrgwhether the machine has passed or failed.The TestOfficerwill prepare ae many copiesas directed by the Contracting Officer.

5. DETAILED REQUIREMENTS

5.1 Pre-Test.

5.1.1 Descriptio?t. The pre-testshallconsistof threeprincipalparte,each of which isdescribedbelow:

A. PreventiveMaintenanceServiceandInspection

B. InspectionCheck List

C. Inspection Tests

5.1.2 Standard procedures.

5.1.2.1 Standard load specifications. Inspec-tions and teets under the provisions of thisstandard requiring use of etandard loads willutilize the appropriate load detailed in Draw-ings L, M, and N or a load of another con-struction or composition which has the samedimensions, weight, location of center ofgravity, and safety features, as the appli-cable load detailed in Drawings L, M, and N.A tolerance of –1% + 0% of the specifiedtest loads will be permitted.

5.1.2.2 Pre-test procedure. All items of thepre-test shall be completed satisfactorily inturn, prior to the performance test.

5,1.3 Prevwztive maintenance eervice and

inspections procedures.PreventiveMainte-nance Service and Inspections (“B” Sched.ule) shall be conducted as contained in theStorage and Materials Handling Handbook,NAVSANDA Publication 249.

5.1.4 check h-t.

5.1.4.1 When performed. All inspectionsand other procedures needed to answer thequeetions contained in the Pre-test CheckLiet shall be performed in conjunction with,or immediately subsequent to, the preventivemaintenance service and inspection.

5.1.4.2 How recorded. Each of the ques-tions contained in the Pretest Check Ulstshall be answered by pereonnel designated bythe Test Officer by placing an “X” in thecolumn headed “Yes” or “No” as appropriate.

●

2


● 5.1.4.3 How evaluated. After completion ofthe check liet, any “X” in the “No” columnshall be canse for rejection of the machhe

●under test.

5.1.4.4 OLher checks, t~pe EE trucks. In”the case of type EE trucks, in addition to allotherinspectionsand testsdescribedherein,requirementsoutlinedinthefollowingpara-graphsofSpecificationMIIA-3988 shallbeinspectedorteetedfor.compliance.’

S,etific.tionF’w@,@kNo. Com,m.t3.1.6.2.2 Enclosuresandshields.3.1.5.4 Resistorhousingsandhea%actuated

devices.3.2.1.1 Motors.

●3.4 Controlsandinstrumentation.3.5 Accessories.

5.1.5Pre-~est Iw.spection tests. Inspectiontests shall be given in accordance with thefollowing tabulation, to indicate fuftillment ofthe referenced paragraphs of SpecificationMIL-C-3988, as provided for in test forms.

M1l.-Slk26211 March 1957

5.1.5.1 Specific inspection tests.

$:8:1%::Aml(eabb

P.nwrallhofT..t Titla Smi%ot;otl

2G SteerirmWheel 3.6.75G Towing-Hooks 3.3.K.3TG Speed 3.6.48G SlopeAscension 3.6.S14G Stability 3.6.1315G WearofSteeringMechanism 3.6.116G Acceleration 3.6.1417G StoppingDistance 3.6.15

5.1.5.2 How recorded. Each of the que3-tions contained in the Pre-Test InspectionCheck Sheet shall be answered by personneldesignated by the Test Officer by placing an“X in the column headed “Yes” or “No” asappropriate.

5.1.5.3 How evaluated. After completion ofthese additional inspections, all test formsehall be examined. Any “X” in the “No” col-umn of 1 or more of the3e forms shall bscause for rejection of the machine under test.

(


MIL-STD-26211,March 1957

4000 POUND STANDARD CRANE TEST LOAD

.DRAWING ‘L”

>“

““a



●

T.—.—-~I

72’ t

6000 POUNDS:

T.~DIA.e

{J 0- !-’ @Yk-1

6000 POUND STANDARD CRANE TEST LOAD

DRAWING “M”



‘/

T72:

1.

q

10000 POUNDS

f9 T

_2#”OlA..

~ ‘i

I, ~8”‘“— \ }l-.!” I

a-+ 4000 I

Iw10,000 POUND STANDARD CRANE TEST LOAD

DRAWING “N”

●

●

● ’

*6



PRE-TEST INSPECTION CHECK LIST

CRANE TRUCK, WAREHOUSE, ELECTRIC, SOLID RUBBER TIRES

● Description of Truc~

Truck Mfgr Date

.,Model Test Location

Serial No. Recorded by

Amli.cbbS,..+iicatim

C.mlmnent P.aram.Ph 1;.!,! TO B. Checked rea N.

Indation 3.1.6.1

● Endoswes and 3.1.5.2.1shields

3.1.5.2.2

Overrxrrent 3.1.5.3. . devices

Resistor howiings 3.1.5.4and heat-actuateddevices

Static discharge 3.1.5.5device

Control panel 3.1.5.6

Motors 3.2.1.1

Speed controller 3.2.1.2

3.2.1.2

9.2.1.2.1

3.2.1.2

3.2.1.2

Lead line hoist, boom 3.2.1 .2.2hoist, and boomsluing controllers

Em! contractor submitted to the inspection of%cer a cer-tificate of compliance with the requirements of thisparagraph?

If type E truck is specified, has contractor submitted to theinspection officer a certificate of compliance with therequirements of this paragraph?

If type E E truck is specified, has contractor submitted totbe inspection officer a certificate of compliance with therequirements of this paragraph?

Has contractor submitted to the inspection officer a cer-tidcate of compliance with the requirements of thisparagraph?

Has contractor submitted to tbe inspection officer a cer-tificate. of compliance with the requirements of thisparagraph?

If type EE truck is specified, is it equipped with two re-placeable electrically conductive rubber straps mountedadj scent to or immediately inside drive wheels to dk+charge .=,taticelectricity?

Does the control panel comply with the requirem-ents of this

paragraph?

Ilas contractor submitted to the inspectim officer a cer-tificate of compliance with the requirements of this

paragraph ?

Does speed controller provide for at least 4 speeds forward?

Does speed controller provide fer at least 4 speeds reverse?

Does the controller have automatic means to preventreversing except through first speed ?

Does speed controller have automatic means to preventistarting or reversing except in first speed?

Does controller permit preckion maneuvering in restrictedareas ? ,, .

When specified, do load line hoist, boom hoist, and boomsluing controllers provide for at least 2 speeds in eitherdirection through a stepping mechanism?

7


11 March 1957

CO.9MIMIC

Battery

Battery leads

Battery connectors

Batterycompartment

Pmwrmh

3.2.2.1

3.2.2.1

3.2.2.1.1

3.2.2.1.1

3.2.2.1.1

3.2.2.1.1

3.2.2.1.1

32.2.1.1

3.2.2.2

3.2.2.2

3.2.2.2

3.2.2.2

3.2.2.2

3.2.2.3

3.3.2.3

3.2.2.3

3.2.2.3

3.2.2.3

Item T. B. Checked Ye. No

If battery (s) is furnished by the contractor with the truck,is it in accordance with Standard M%15367 (36 VOMgroup) and as specified in procurement documents?

If battery (s) is furnished hy contractor with truck, isminimum capacity at least 600 ampeze.hours for size Iand 450 ampere-hours for size 11?

If battery is furnished by the contractor with truck, isbattery equipped with flexible leads with locking half ofconnector attached ?

If battery is furnished by contractor with truck, do batteryleads extend at least 30 inches from the corner of thebattery in accordance with Standard MS-15367?

Are all conductors passing through metal walls protectedhy insulating grommets, frame connectors, or insdated

passages?

If battery is furnished by the contractor with truck, arebattery leads, within the battery compartment, separatedas far as possible?

If battery is furnished by the contractor with truck, arebattery leads permanently connected to battery terminalposts?

On size II is provision made for connecting batteries inseries?

1s there a connector mounting half located to accommodatethe connector locking half on battery leads?

1s connecbr mounting half permanently atlixed to thetruck?

If battery(s) is furnished by the contractor with truck, isconnector locking half provided with reliable means forgrasping to permit removal without strain o“ the leads?

IS the connector locking half compatible with connectormounting half ?

For type EE truck% if connectors are monnted outside thebattery compartment, is provision made for locking eachconnector with a padlock to be furnished by the Govern-ment at destination?

1s battery compartment made from nmi-cmnbustiblematerial ?

If metal battery compartment is used, is it at leaat number16 USS gauge in thickness?

Is battery compartment flanged not less than %-inch onall sides, or provided with equivalent reinforcement?

Can battery compartment cover be opened using handtools?

1s battery compartment constructed to prevent short cir-cuiting ?

8

●

*

●


●MIL-STD-26211 March 1957

Aml;e.zbhSmtific.tim

Cmlw-t Fmw.mh lte?z To B<Ck.eked Y.* No

● Batterycompartment

(continued)

Reduction units

Chassis and frame

●Bumpers

Boom support

Boom pivot

● Load line hoist

●Boom

3.!2.2.3

3.2.2.3

3.2.2.3

3.2.2.3

3.2.2.3

3.2.2.3

3.2.3

3.2.3

3.2.3

3.3.1

3.3.1

3.3.1.1

3.3.1.1

3.3.1.2

3.3.1.2

3,3.1.3

3.3.1.4

3.3.1 .4.1

1s battery compartment amply ventilated?

If type EE truck is specified, is a liner of ample strengthand rigidity to prevent short circuiting of battery ter-minals secured to inside of cover?

Does battery compartment have following minimum insideclear dimensions:

B.u.?wCmnrm,tmmtD;m&mMTruckS?..

Lmotl, Width Height

1 32% 40?4 25%

11 40 63 25%

Are effective means provided for securing battery in place?

If type EE truck is specified, has provision been made forlocking the compartment with a padlock?

If type EE truck is specitied, are battery compartmentopenings coyered with heavy gauge wire mesh, or theequivalent?

Are drive, boom hoist, boom sluing, and load line hoistreduction units connected directly to their respectivecounterparts ?

Are drive, boom hoist, and load line hoist reduction unitstotally enclosed?

Do drive, boom hoist, and load line hoist reduction unitsoperate in a constant oil bath?

Do chassis, frame, crane members, and related structurehave sufficient depth to protect workinz parts?

Aye chassis, frame, crane members, and related structurein operating condition with no evidence of permanentdeformation?

IS the crane truck provided with a front bumper of struc-tural channel and of sufficient size t. protect f rent tires?

Is the rear bumper of sufficient size and placed so as toprotect rear springs, tires, and frame ?

Is the crane truck equipped with a mast, or A-frame, andcenter pin or a structure of similar characteristics?

Are cross members so designed and constructed so as notto obstruct unduly the operator’s view directly ahead orof the load hook?

Is the center pin or boom pivot mounted on roller bearingsor oil impregnated bronze bearings?

Are guide rollers or other devices provided to prevent slackcables from’riding over drum or shem.e flanges’, or chafingon crane or boom structure?

Is the boom of the Z-section, telescopic, 270” sluing type?

9


I

11 March 1957e

Adicabbsll.ti$uauon

Conwanent P.mLlraPh l&n TOL?.Chedwd Ye. No

Boom 3.3.1.4.1(continued)

3.3.1.4.1

3.3.1.4.1

2..3.1.4.1

3.3.1.4.1

3.3.1.4.1

Winch 3.3.1.4.2

3.3.1.4.2

3.3.1.4.2

Cable storage 3.3.1.4.3drum

3.3.1.4.3

3.3.1.4.3

3.3.1.4.3

3.3.1.4.3

Sheaves 3.3.1.4.4

3.3.1.4.4

3.3.1.4.4

Cable 3.3.1.4.5

3.3,1.4.5

3.3.1.4.5

3.3.1.4.6

Can the boom be moved through a 80” arc in a verticalplane?

IS boom designed and constructed so as not to have anytail swing?

Are means provided to prevent wedging or binding of theunloaded block or hook when at boom end?

IS there no less than 3 steps to position boom?

IS the crane truck designed and constructed so that no partof the boom or related structure will Pass over theoperator’s head?

Is beam length at least 12 feet retracted and 19 feetextended?

Does the winch consist of an electric motor and a gearreducer which is directly connected to the cable storagedrum?

Do reduction gears operate in a constant oil bath?

Are magnetic filler and drainage plugs provided ?

Does cable storage dmm have a minimum tread diameterof 18 times the cable diameter?

Is tbe width of the drum such that no more than 3 layers ofcable are needed on the drum with boom fuUy collapsedand hook at boom end?

IS the cable storage drum provided with a ramp thread(if required) oneachflange toprevent piling of cabledflanges?

Are flanges of sufficient depth to prevent cable from ridingoff the drum?

Is drum designed to permit proper spooling of cable?

Are cable sheaves provided to guide the load line at eachpoint of cable direction change?

IS tbe minimum diameter of sheaves at least 18 times thecable diameter ?

Are sheaves mounted on bearings which are either greasesealed or have external lubrication points?

IS tbe cable for the load line 6 by 37 flexible hoisting rope?

Is minimum factor of safety 6 times the tensile stressesinduced by handling rated loads? (A certificate of com-pliance is required.)

IS cable length sufllcient h permit lowering hook to aposition 4 feet below ground level when the boom is fullyextended and raised, with not less than 3 dead turns onthe cable storage drum?

Is the cable attachment end fitted with a galvanized rope

●

●

a

thimble or other suitable connection?

10


MIL-STD-262

●

●

●

●

Block

Limit switches

Wheels

Tires

Steering

Axles

Service brakes

3.3.1.4.6

3.3.1.4.6

3.3.1.6

3.3.1.6

3.3.2

3,3.2

3.3.2

3.3.! 2.1

3.3.2.1

3.3.3

3.3.3

3.3.3

3.3.3

3.3.3

3.3.3.1

3.3.3.1

3.3.4.1

3.3.4.1

3.3.4.1

3.3.4.1

Do the block and/or hook have adequate weight to insurePaYOut of the cable without load on the hook when thehook is in any position?

Is the hook the swivel type and’ is it fitted with a safetylatch?

Are the vertical and horizontal movement of the boom andvertical travel of the load hook controlled hy means oflimit switches?

Are mechanical stops provided at extreme limits of travelfor boom hoist and sluing mechanisms?

Are wheels flat faced with steel banded pressed on tires?

Are there 2 single front wheels, and 2 single rear drivewheels ?

Do wheels, when equipped with new tires, clear any part ofthe truck structure under all conditions of operation astested herein?

Are tires of the industrial, solid rubher high profile cushiontype ?

Do tires have either smooth or non-directional type treads?

Is steering accomplished hy an automotive type steeringwheel, not exceeding 20 inches in diameter, mountedhorizontally on the steering column and equipped with aspinner knob, which turns the f rent and rear wheels?

Does clockwise or right hand rotation of the steering wheelprovide for right hand or clockwise turning of the truckwhile going forward ?

1s provision made for precision adjustment to compensatefor wear of all major steering parts, particularly steer-ing gear reduction mechanism ?

Can friction points on steering mechanism be lubricatedwithout disassembly or removal of any other component?

Isa hydraulic steering booster or other power steeringdevice provided ?

Are means provided to prevent wheels or tires from con-tacting any part of the truck structure irrespective ofobstacle magnitude?

Are material requirements of this paragraph met?

Are service hmkes of the hydraulically actuated internalexpanding type or disc type mounted on the drive wheels?

Is brake system interlocked with a reIay switch which dis-connects the electric circuit from the traction motorwhen brakes are applied?

Are brakes applied by releasing brake pedal?

Are brakes capable of retaining truck with maximum ratedload on a 10 percent grade?

11


MIL-STD-26211 March 1957 ●

.4pp1;c5bt#S9*.SW..SO!$

Com,.nwne P.znwrmh Item To Be Checked Yea ‘v.

Service brakes 3.3.4.1(continued)

Is hydraulic master cylinder accessible for checking andredllirw?

●

Boom hoist, boomsluing and loadline hoist brakes

Operator’s platform

Fenders

Towing hooks

Outriggers

Hand holds

Controls

3.3.4.1

3.3.4.1

3.3.4.1

3.3.4.2

3.3.4.2

3.3,4.2

3.3.4.2

3.3.4.2

3.3.5.1

3.3.6.1

3.3.5.1

3.3.5.1

3.3.6.!2

3.3.5.3

3.3.5.3

3.3.5.4

3.3.5.4

3.3.5.4

3.3.5.6

3.4.1

Are service brakes protected to insure satisfactory opera.tion in accordance with standard automotive practice?

Can hydraulic brake system be bled of air without removingthe wheels or disconnecting hydraulic lines?

Is brake lining, when used, of molded type, rivete~ orcement bonded to the brake shoe?

Are boom hoist, boom sluing, and load line hoist brakes ofthe external contracting or internal expanding doubleshoe type m of the disc type?

Are brakes mounted on tbe motors or drive shafts of therespective units?

1s brake lining of molded type, riveted or cement bonded totbe brake shoes or discs?

Are boom hoist, boom sluing, and load line hoist brakesystems interlocked with a relay switch which will apply

the brakes, by means of a solenoid plunger, when theelectrical circuit is disconnected?

Is the load line hoist motor used b psrtially brake thespeed of the load hook before application of frictionbrakes?

1s operator’s platform made from mm-skid steel plate?

Is operator’s platform to the right of steering wheel?

Does operator’s platform have imfficient depth to permitoperator to stand within the plan outline of tbe truck?

Is platform enclosed on sides and rear with a plate extend-ing at Ieaat 6 inches above the platform?

If wheels protrude beyond the body of the truck, are suit-able fenders provided?

Are 2 ring or pin type towing hooks provided, 1 in the frontand 1 in the rear of the crane truck?

Are towing hooks recessed in the center front and the centerrear of the truck so that they do not project from thetruck?

Is crane truck equipped with 1 manually adjustable out-rigger on each side?

Are outriggers equipped with adjustable jacks?

1s provision made for securing the jacks when not in use?

Are suitable hand holds and steps provided to assist oper-ator in mounting the crane truck?

Are all switch and lever type controls except directionalcontrols, provided with position markings at the switchor lever?

12

●

●



●

I’ed No

Controls 3.4.1(continued)

3.4.1

3.4.1

3.4.1

Light switch 3.4.1.1

3.4.1.1

3.4.1.1

3.4.1.1

Brake pedal 3.4.1.2

Accelerator 3.4.1.3

Directional controls 3.4.1.4

Crane controls 3.4.1.5

3.4.1.5

3.4.1.6

3.4.1.5

3.4.1.5

Hourmeter 3.4.2.1

3.4.2.1

3.4.2.1

Headlight 3.5.1

3.5.1

3.5.1

●Spotlight 3,5.1.1

Are all controls and instrumentation protected againstmoistme and adverse weather conditions?

Are directional controls piovided with position markingseither at the control lever or on a diagram visible to theoperator?

Are lever controls equipped with hand grip knobs ?

Is there at least % of an inch clearance between the oper-ator’s hand and any adjacent knob, lever, fitting, or truck

structure, when control knobs or levers are in any oper-ating position?

Is there an “on-off” headlight switch?

Does it control the tail lamp, and the headlight, whenrequired ?

Is there an “on-off” spotlight switch?

Are switch locations convenient to tbe operator?

Is brake pedal conveniently located for left foot operation?

Is accelerator control to the right of the operator andarmmged for comfortable right hand operation?

Is a lever(s) for, forward and rearward control located forright hand operation ?

Are all crane controls self-centering levers?

Are boom hoisting, load line hoisting, and boom shzing con-trols conveniently located for right hand operation?

Does forward or downward motion of control levers lowerload, lower boom, and swing boom clockwise?

IS location of crane control levers, from left to right, asfollows: load line hoist control lever, boom hoist controllever, and sluing control Iever?

Are controls designed to permit independent or simul-taneous hoisting boom topping and boom sluing?

IS hour meter flush mounted in a location convenient to andplainly visible to the operator?

Does hour meter registar total nwnber of operating hours?

Does totrdizer of h.mr meter register not less than 9999?

Are headlights, automotive sealed beam type, of not lessthan 32 candlepower?

Is directional focus of headlight, when provided adjustableboth vertically and horizontally?

Is headlight, when provided, protected against damage byposition or guard?

Is there a spotlight of not less than 32 candlepower which isinterchangeable with headlights ?

13


. . .. ---- . . .IVUL-> I lJ_ZOZ1 I March 1957 @

AmlimbkSpdleatk-n

c.- P.nwr.wh Itan To B, Chaked Y- No

Spotlight 3.6.1.1 ‘ Is spotlight directionally controllable by the operator with. ●(continued)

Stoplight

Horn

Fire extinguisher

Load line hoistlift speed

Load line hoistlowering speed

Boom toppingspeed

Bwm cluingspeed

Turning radius

Steering wheel

Hookclearance

Under-clearance

3.6.2

3.5.2

3.5.2

3.5.2

3.5.3

3.5.3

3.5.4

3.6.1.1

3.6.1.2

3.6.2

3.6.3

3.6,6

3.6.7

3.6.8

3.6.9

out leaving the operator% plafform?

Isa red, ;eflector type, combination stoplight and tail lamp,of not less than 15 and 3 candlepower respectively, re-cessed or mounted on the rear of the truck?

Is stoplight recessed or mounted on the rear within theplan outline of tbe truck?

Does stoplight operate only upon actuation of the servicebrake pedal?

Is stoplight inoperative when parking brake k+ applied?

Is crane truck equipped with an electric horm with pushbutton conveniently located for right foot orrigbt handoperation?

Is the horn, horn button, and electrical wiring protectedagainst moisture and adverse weather conditions?

If specified, is a fire extinguisher provided which meets therequirements of this paragraph?

Is the hook lifting speed for lifting maximum rated load notless than:14 or more than 22 feet per minute for size 18 or more than 14 feet per minute for size 11?

IS the hook lowering speed with load not less than:20 feet per minute for size I10 feet per minute for size II?

Is the boom, with rated load, capable of going from ahorizontal position to maximum elevation, or vice versa,in not less than 60 seconds and not more than 90 seconds?

Is time required for swinging the boom through 270” arcwith rated load not less than 30 seconds or more than 60sw.mds?

la crane truck capable of turning in 00” intersecting aisleswhose width is:

90 inches for size I103 inches for size H?

Is staeringwheel capable of being turned from extremeleft or vice versa, in not more than ‘7 complete turns ofthe hand steering wheel?

Is maximum hook height, measured from the FUI1point ofthe hook to the ground, at least 17 feet with the hook 6feet from front bumper with beam in fully extended posi-tion, and 7 feet with the hook at 14%4 feet f mm f rontibumper?

1s under-clearance sufficient to permit operating crane truckfrom one horizontal plane tn another, UP or down a 10percent dope?

14

●



A,diabla

SVecwmtbrlC..ml!wnt Pmwmph ItamTOBe Cb.k.d

●Over-all height 3.6.10

Traveling capacity 3.6.11

Bearings 3.?.1

Lubrication 3.7.2

Workmanship 3.1.3

3.7.6.2

Load capacity chart 3.7.6.3

Instruction plate 3.7.6.4

; Registration data 3.7.’7

@

Maintenance 3.7.9.1service, repair,and parts manuals

Is the crane truck capable of passing under an obstructionthe underside of which is 91 inches above ground level?

Is the crane truck capableof travelingforward or rear-ward, in a straightline,over a level surface,’ with itsboom at any wtting a“d carrying the appropriate ratedload for that setting?

Do bearings comply with the applicable requirements ofthis paragraph?

ArereadyaccessibIe means provided for applying lubrica-tion to all parts and components?

Are rivet connections, weld joints, bolt connections, castingsand 5ish in compliance with the applicable paragraph?

1s a nameplate provided which meets the requirements ofthis paragraph?

Is there a corrosionresistantmetal plateprovidedwhichmeets the requirements of this paragraph?

Is there a corrosion-resistant metal plate provided whichmeets the req”irernents of this paragraph?

1s assigned registrationn ”mberfor each truck painted inblack enamel letters 3 inches high on each side and in

center of battery compartment?

Is a COPY of manufacturer’s standard commercial manualincluded with truck or a more comprehensive rammal mspecified.

15



PRE-TEST INSPECTION TEST CHECK SHEETCRANE TRUCK, WAREHOUSE, ELECTRIC, SOLID RUBBER TIRES

Description of Tmck ●TruckMfgr Date

Model Test Locatio

Serial No Recorded by

AmlicmblucmwOlwlt T.: I’m Item T. B. Checked Y.. No

Steering wheel

Towing hooks

Speed

~Slope ascension

Stability

Wear of steeringmechanism

Acceleration

Stopping distance

2G

2G

2G

6G

5G

5G

6G

7G

7G

8G

14G

14G

15G

16G

17G

1s the maximum gage reading required to turn the steer-ing wheel in a counterclockwise direction 20 pounds orless?

IS the maximum gage reading required to turn the steer-ing wheel in a clockwise direction 20 pounds or leas? a

Is there any evidence of permanent deformation b thesteering wheel, column, related mechanical andjor hy-draulic linkage?

Can test truck be pulled, with wheels locked, without fronttowing hook failing?

Can test truck be pulled, with wheels locked, without reartowing hook failing?

Can test truck be pulled, with wheels locked, without visualobservation of permanent distortion of front towinghook?

Can test truck be pulled, with wheels locked, without visualobservation of permanent distortion of rear towinghook?

IS average forward and rearward speed with maximumrated load at Ieast 3% miles per hour?

Is average forward and rearward speed without load atleast 4 miles per hour?

Can truck, when carrying maximum rated load, stop on a10 percent grade and start up again?

Were all phases of the stability test completed withoutfailure, such as crane truck tipping?

Were all phases of the stability test completed withoutvisual observation of permanent distortion to any Partof the crane truck?

Is the free play of the steering wheel before the perform-ance test not more than 5 inches?

Is average acceleration for first 2-2 feet from a standingstart at least:

2.2 feet per second per second for truck without load?2.o feet per second Per second for truck with maximum

rated load ?

Is average stopping distance from rated speed not greaterthan 5 feet when normal braking is applied?

16


●

●

o

*


TEST FORM NO. 2GSTEERING WHEEL

Cm.ne Truck, Warehouse, Electric, Solid Rubber Tires

Purpose: To determine whether the force required to turn the steering wheel meets speci-fications.

Test Z)escription: Placethe unloaded truck on a level concrete surface. Using a tensiondynamometer (with a 0.250 pound dial) or equivalent, equipped with a maximum hand,measure the force required to move the steering wheel.

Test Procedure:

1.2.

3.4.5.

6.7.8.

Place steer wheels in a straight-ahead position.Assemble an adapter pulley having a root diameter equal to the steering wheel di-ameter and means for attachment to the wheel epokes, to the steering wheel.Attach a tension dynamometer te the adapter puIley.Place truck on dry, level, smooth, trowelled or brushed concrete.Grasp the dynamometer lead and apply a steady force, in a counterclockwise direc.tion and in the wheel plane, until the wheel turns.Observe the maximum gage reading within the first half of the inner steer wheel angIe.Observe the maximum gage reading at extreme ends of the steer.Perform 5, 6, and 7 in a clockwise direction.

Addendum Test

After completing test requirement above conduct following:

1. Block eteering wheels in straight-ahead position.2. Grasp steering wheel and exert at least 200 pounds pressure in clockwise direction.3. Repeat in counterclockwise direction.4. Perform operations 2 and 3 four times.5. Complete data form for addendum questions.

Data Form:●Description of Truck

Truck Mfgr Date.

Mcdel Test Location

Serial No. Recorded by

Crete?Ckw.blia. Cb.km.m

Qw8t<on Dkotiou Di?*ction

Maximum gage first half of inner steer angle

Maximum gage reading at extreme ends of steer

Addendum Question Y@ No

●

Is there any evidence of permanent deformation to steering wheel,related steering mechanism and/or hydraulic linkage

17



‘PEST FORM NO. 5GTOWING HOOKS

Crane Truckj Warehouse, E1ectcic, Solid Rubber Tires

●Purpose: To determine whether towing hooks have sufficient strength. ,-

Test Description: Using steel cable or chain, attach to the front towing hook of the testtruck another truck of the same ‘or ‘greater capacity. Lock wheels on test truck and pull withthe other truck on dry, level concrete until test truck slides forward not more than 1 foot.Repeat test on rear towing hook.

Test Procedure:

1.

2.

3.

.4.

5.

Place test truck on dry, level, smooth, trowelled or brushed concrete.

Use steel cable or chain to attach a second truck of same or greater capacity to fronttowing hook of test truck.

Release brake pedal of test truck to lock wheels and starting second truck slowly, pull *

ontoting hook until tisttruck slides forward notmorethanl foot, with wheels locked.

Performoperations2 and 3,testingreartowinghock,

Complete data form.

Data Fecm:

\ ●

‘escriptiOnOfTTruck Mfer

Model Test Location

Serial No.

Q.-H.. ‘e””rdedby=Can test truck be puUed, with wheels locked,

without f rent towing hook failine? I I ICan test truck be pulled, with wheels locked,

without rear towing hook failing? I 1 ICan test truck bs pulled, with wheels locked,

without visual obiervaflon of permanenbdistortion of front towing hook?

Can test truck be pulled, with wheels locked,without visual observation of permanentdistortion of rear towing hook?

●

9Is there any evidence of permanent distortion

or def onnation of the f ram. ? I I I18 ●


MIL-STD-26211 Mrirch 1957

TEST FORM NO. 7GSPEED

Game Trnckj Warehouse, Electric, Solid Rubber Tires

Purpose: To determine whether truck on a level surface is capable of a forward or rear-ward speed ofnotlesathan3~2 miles perhonr with rated load and 4mileeper hour withoutload.

Test Description: Test isconductedoua 188-foot or more paved level course. Truck, withrated load, is accelerated through a 50-foot or more approached, timed through an 88-foot

: test length, and then brought to a stop. (This 88-foot length is to simplify calculations as88 feet-minute is 1 m.p.h.) Three ruus are made forward in high epeed and 3 in reverse.The date is recorded and average speeds determined. The testis repeated with truck unloaded.

o Ceurse Lwyout:

A +— 50’ or more-* B ~ 88’ — c *— 50’ or more ~ D

Test Procedure:

1. Install 1 or2fully charged batt@ies, as required, of thesize used by the Governmentfor the size truck under test and then operate truck forlhour prior t.o test.

2. Locate truck, carrying maximum rated load, for forward run with front wheele online A. Load shall reattached to the truck by 2 guy lines leading from theloadt.o

;. opposite sides of the truck when they are anchored to the truck structure.

3. Skwtfomwardtes trunand havetruck atspeed bythetime itreachesline B.

4. Using split second stop watch, determine time inseconds used intravelingfrom line Bto line C and record on data form.

5. Perform operations 3and4asecond and third time.

6. Locate truck, carrying rated load, for rearward run with rear wheels on line A.

7. Stitimamard tistmnand have tiuckat speed bythetime itreachesline B.

8. Usi]lgsplit second tiopwatih, detemine time ineeconds nsedintraveling from fine Bto line Canal record on data form.

9. Perform operations 7and8a second and third time.

10. Complete data form.

Q19



Data Form:

Description of Truck

Truck Mfgr Date

Model Test Location


I Forward I Rearward

Time in seconds, No. 1 test

“ =

Time in seconds, No. 2 test IllTime in WYXIdS, No. 3 test IllTotal time

Average time (% of total time)

Average speed in m.p.h. 60

average time

tied.. Yes

Is average forward and rearward speed withmaximum rated load at least 3M m.p.h. ? I

Is average forward nnd rearward speed withoutload at least 4 m.p.h.? I

without

load

No

a.

‘!

0“

20


.

TEST FORM NO. 8GSLOPE A3CENSION

MIL-STD-2621I March 1957

crane Truck, Warehouse, Electric, Solid Rubber Tires

Purpose: ‘To determine whether crane truck, when carrying maximum rated load, can ac-celerate from a dead stop on a 10 percent grade.

Test DescA@m: Crane truck, carrying maximum rated load, ascends a 10 percent grade in aforward direction on a dry concrete surface. Crane truck etops and starts up slope again.

Teet Procedure:

1. Place maximum rated load on load hook.

2. Drive crane truck up ~0 percent ramp in a forward direction and bring it to a deadstop.

3. Start crane truck from the dead stop and proceed up ramp.

4. Complete data form.

Data Form:

rDescription of Truck

IModel“’’’””’””-————I

hSerial No Rscorded by

Qmsti.m Ye N.

Can crane truck, when carrying maximum rated Iaad,stop on 10 percent grade and start up again?

.,,.



TEST FORM NO. 14GSTABILITY

Crane Truck, Warehouse, Electric, Solid Rubber Tires

Purpose: To determine whether crane truck has sufficient stability and whether it meetshoisting, topping, and aluing specifications.

Z’est Description: Teststandard load for crane truck type is placed on ground 60 inchesdirectly in front of the front bumper. Load is picked up by hoist and, without changing boomtopping, is slued 135° to the right. Load is lowered to ground, and then picked up andraised until 2 feet above the ground. Boom is elevated to raise load another foot and loweredto return load to the 2-foot level. The boom is then turned 15° towards the left and the testrepeated. This procedure is followed at 15° increment untii boom is slued 135” to the left.

Test Procedure:

1.

2.

.3.4.6.

6.7.8.9.

10.

Data

Place maximnm rated load for the type crane truck being tested directly in front ofcrane truck.Attach hook of crane truck to eye of test load and slowly raise load vertically untilbottom is 2 feet above ground level.Without changing boom topping, slowly slue boom 135” to right.Without changing boom topping, lower load to ground level.Witbout changing boom topping, raise load until bottom of load is 2 f eet above groundlevel.Elevate boom until bottom of load is 3 feet above ground.Lower boom until bottom of load is returned to 2-foot elevation.Without changing boom topping, slue boom 15” towards left.Repeat operations 4, 5, 6, 7, and 8 at 15” increments until boom is shed 135° tothe left.Complete data form.

Form:


Truck Mfgr Date

Model Test Locatio


Qn.tkm Yea N.

Were all phases of the stability test completed without failure,such as truck tipping, load falling, etc.?

Were all phases of the stabilitr test completed without visualobservation of permanent distortion to any part of the cranetruck?

I

46



TEST FORM NO. 15GWEAR OF STEERING MECHANISM

Crane Truck, Warehouse, Electric, Solid Rubber Tires

Purpose: ‘Todetermine cumulative wear in the steering mechanism of the truck due to carry-ing out requirements of the performance test.

Test Description: With the truck stationary and with no load, the amount of free play inthe steering wheel is measured. This procedure is followed before and aftir the performancetest. If an abnormal increase in free play is noted after the performance test is run, it isan indication of excessive wear in the steering mechanism.

Test PTocedure:

1.

2.

3.

4.

5.

6.

7.

8.

Place unloaded truck on a dry, level, concrete surface with its rear wheefa parallel tothe longitudinal axis of the truck.

Attach to the steering column, immediately hclow the eteering wheel and parallel to it,a piece of stiff fiber board or sidar materfal which is semi-circular in shape and whichhas a radius at least 1 inch greater than the radius of the steering wheel.

Mark a reference point on the upper po~ion of the outer edge of the steering wheel;mark a corresponding point on the fiber board tcmplet.

Turn the steering wheel counterclockwise until the wheels of the truck begin to turn.Mark a point on the fiber templet corresponding to the reference point on the outeredge of the steering wheel.

Turn the steering wheel clockwise until the wheels of the truck begin to turn. Marka point on the fiber board templet corresponding to the reference point on the outeredge of the steering wheel.

Remove the fiber board tkmplet from the truck.

Place the fiber board templet on a flat surface. Measure the distance between the twopoints made in accordance with operation numbers 4 and 5 above. TMe distance, ininches, is the free play of the steering wheel.

Complete dab form.

23



IData Form:

Description of TrPck

Truck Mfgr Date

Model Test Location


Free Play of Steering Wheel:

Before Performance Test inches

After Performance Test inches

Qu=tfon Y= No

Is the free play of the steering wheel before the performance

test not more than 5 inches?

Is the free play of the stiering wheel after the performancetest not more than 1.6 times the free play of the steeringwheel before the performance test?

:

... I

*

24

●’●



TEST FORM NO. 16GACCELERATION

Crane Trnckj Warehouse, Electric, Solid Rubber Tires

Pwryose: To determine acceleration of truck, with and without load, on a level surface froma standing start.

!l’e.stZkccription: Test is conducted on an 88 foot paved level course. Truck is acceleratedat maximum rate from a standing start, timed through a distance of 22 feet and thenbrought to a stop. (This distance is used so that this test can be performed in thesame area as used for the Speed Test.)

Course Layout:

A ❑ ------------- 22’ -------m B ❑ ------------------------ 66” -------..-.----.---..-------..9 c

Test Procedawe:

1.2.3.

4.5.

6.

7.8.9.10.

11.

Operate truck for 60 minutes prior to test.Locate truck, without load, with front wheels on line A.Station an observer at line B. The observer shall be provided with a split second stopwatch.The test leader shall be stationed at line A.Test leader shall etart test by calling “mark”. When this signal is given the truckoperator starts the truck and the observer starts his watch.The truck operator will maintain maximum truck acceleration through the entire 22foot test run.As the front wheels of the truck pass over line B, the observer stops his watch.Record stop watch times on data form.Perform operations 1 through 8 a second and third tire;.Perform operations 1 through 9 with truck carrying maximum load. Attach load totruck by 2 gny lines leading from the load to opposite sides of the truck where they areanchored to the truck structure.Complete data form.

Data Form:


Truck Mfgr DatP

ModeL Test Location

SeriaI No Recorded by

QII.ticm Yea No

Is +verase acceleration for the firsb 22 feet at least:2.2 feet per second per second for truck without load?2.0 feet per mcond per second for truck with maximum rated load?

26



TEST FORM NO. 17GSTOPPING DISTANCE

Crane Truck, Warehouse, EIectric, Solid Rubber Tires

Purpose: To determine truck can be stopped witbin a givendistaucefrom specifiedmaxi-mum speede.

TestDescription: Runtruck at maximum speed over dry, smooth, trowelled or brushed con-crete, apply brakes and measure the distance required to stop the truck.

Course La~out:

A B...........................lOO~Or more ...........................m Bm ....................88 . ....................=C

Test Procedure:

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

Place a clearly visible vertical mark on the side of the truck directly beneath the nor-mal position of the operator’s head. Mark shall be such that the operator can see iteasily.

Operate truck for 15 minutes prior to test. Operate brakes at least 10 times.

Run the loaded truck in forward direction onto a strip of dry, smooth, level, trow-elledor brushed concrete, measured and marked as specified above in “CourseLayout.”

Start 2 split second stop watches at same time so that they are synchronized.

Station an obaemer at line B and a second observer at line C. Each observer shall heprovided with one of the stop watches described in operation 4.

Start the truck at line A and accelerate it so that it has attained full speed before itreaches line B.

Maint&n the truck at full speed between lines B and C.

As the front wheele of the truck pass over line B, the first observer stops hk watch.

Aa the front wheele of the truck pass over line C, the eecond observer stops his watch.

The operator applies truck brakes, when tbe line placed on the truck in operation 1is directly over line C.

After truck is stopped, meaeure the distance from line C to the line on the truck andrword on data form.

Record watch readings on data form.

Perform operations 3 through 12 a second and third time.

Complete data form.

26



Data Form:

8 Description of Truck. .

Tmck Mfgr Date

ModeL TestLocation

Serial No- Recorded by

Differencei. Watih

W.ztih Watch R.adim7. StoPui*#R..di.o Reading L%6 B- Di,t.mIceLine B Lim C Lk O ill F.3.t

.,.

e Test No. 1

Test No. 2

Test No. 3

Total Readings

Average Readings(% of total readings)

●Average Miles Per Hour

(60+ difference inwatch readings)

,’Qw*tti Y“ NO

Ie average forward speed witk load as specifiedinTest Form No. 7G?

o1s average stoppingdistancew“tb load not greater

than 6 feet, when speed of truck is 3% MPH?

●

●



5.2 Performance test.

5.2.1 Layout of course.

5.2.2.1 Description. The test course shallhe set up in accordance with the provisionsof Drawing E-4. Aisle width to he used shallbe 9 feet. The entire perimeter of the testcourse shall he encompassed with suitablematerials to form a barrier having a heightof at least 12 inches.

5.2.1.2 Course illustrated by Drawing E-L

5.2.1.3 Speeificationof couree featuree.

5.2.1.3.1 Obetacte test. The obstacle testehall be set up in accordance with the pro-visions of Drawing F, as a part of the testcourse. Iron or steel blocks may be ueed. Aguide line 15 feet long shall be provided tothe left of the center line of the course andparallel to it, The inner edge of this guidelineehall be at a distance from the course centerline equal to V2 of the truck width, plus 6inches. Thle spacing and arrangement willallow the left wheels of the machine underteet to paes over the first block and then theright wheels to pass over the eecond blockwhile the machine is moving forward in astraightlineparalleltotheguideline.

5.2.1.3.2 Ramp deeign. The ramp shall beeet up in accordance with the provision ofDrawing G, as a part of the teet couree.

5.2.1.3.3 ‘Specification of standard test load.Test loads usedintheperformancetestehallbeinaccordancewith5.1.2.1and DrawingL,M, and N.

5.2.1.3.4,gpecification of load areas.Testetandard Ioade in Positions 1, 2, and 3 shallbe located in accordance with Drawing P.They shall beplaced in frames made of 6 by 6inch timbers, which have an inside measure.ment of 52 by 52 inchee. Frames shall heattached to the floor in the positions shownon Drawinge E4 and P.

Test standard loads in Poeitions 4, 5, and

6 shall be located in accordance with Draw-jnz Q. They shall be placed in framee madeof 6 by 6 inch timbers, which have an insidemeasurement of 52 by 52 inches. Frames shallbe attached to the floor in the poeitions ehownon Drawings E4 and Q.

5.2.1.3.5 Lighting requirements. Lights Ofthe machine nnder tsst ehall be on at all Vlmesduring the teet.

5.2.1.3.5.1 The headlights shall be turuedoff and turned on at the commencement ofeach lap and at each loading area.

5.2.1.3.6 Course sewface. Except whereotherwiee specified thecourse ahall be pavedwith concrete, or other material having asimilar coefficient of friction.

5.2.2 Standard procedures.

5.2.2.1 Changing battem”ee. Each machineundergoing test shall be allowed not morethan 2 battery changes during the course ofeach operating 8-hour day of the performancetest. However, the time required to changebatteries nnder the provisions of this para-graph shall be excluded from operating time.Batteries to be ueed by the machine undertestshallbe thosespecifiedorinuse by theDepartmentofDefenseforthetypeand sizeofthemachineunderteat.

5.2.2.2Speed of negotiating course.

5.2.2.2.1 GeneroJ. Each machine undergo-ing teet should traverse each part of theperformance test course at the maximum cafepractical speed.

5.2.2.2.2 Laps perheur. During each indi-vidual operating hour of the performancetest, each machine under test ehall complete6 circuits of the test course.

5.2.2.2.3 Laps per 8-hour day. During eachindividual operating 3-hour day of the per-formance test, each machhe under teet shallcomplete 48 circuite of the test course,

26

I



‘.,,

o,..

●

●

—

DRAWING “E-4”

PROPOSED INDOOR TEST COURSE FORWANE TRucKs

== ----- -- _.=---

II

to!,!11

25’1’

(El

1; ,

al,‘*1,

.-J, — —WSU1ON5- . .

0

II

-$

----- ——. =, -_.: __-_-------__. _=---- ----

;“” -:::-:;-”= =77°

~Ol& “~”. 60 INCMES FROM FRONT WMPf K WMCiJ CRANE IS $P07TCD Al 41SLC .COOE NEAREST LOAD

“t.’. 36 iNCMSS FROM FRONT BuMPER WIWN CRANE IS SPOTTED AT AISLC EOOt ‘NEhREST LOAD

LIGHTING TO 81 h hl!NIMUM OF 5 FooT. CANDLES 61 OPERATIMO LEVELTEST WURSE IS FINt-FLO&T FINISH COM~ TEOR~

JEST GWRSE IS SHOWN Lk10 OUT LUIQIUJ&lU A 91Aw NDARD COO’ W 000’ NAVY WMUIU!QE

a,clc. ..sEcTION OESIOMATION

29


MIL-STD-26Z11 March 1957

DRAWING “F “

DETAILS OF OBSTACLE BLOCK CONSTRUCTION

pi+

END VIEW

=+ @+IDE VIEW

NOTE . 2 BLOCKS REQUIRED— .. .

BLOCKS TO BE AT TAGliED 10 TEST COURSE AS

SHOWN BELOW

LAYOUT OF OBSTACLE TEST— ——AREA”E” OF TEST COURSE

DIRECTION OF

TRAVEL

_. J_* ‘0’ —-“~

CENTER LINE OF COURSE—. ___ _ANO FORK TRUCK—. -.—

H.“

1.+.Ic1NOTE “a”. OISTANCE BETWEEN CENTERLINES F OR IVING WHEELS—-— —. —..

.,

*

●

●

●



I

‘*

,,

●

aW


I MIL-STD-26211 March 1957

DETAII S W LOSI:IONS l.? AND 3

k“~l -iq--1 *I : 1’iT

1i ‘v%“

A 67+ 2s’ i

I ~ 64~

TOP VIEW

STANDARD TEST LOAD AS SHOWNIN DRAWINGS L, M, AND N

r- —-—- 1I

,

I

I NOTE “ “~-=60 INCHE:, = FRONT 6UMPEI

Iw~dRH4%&LEDGE NEAREST LOAl

1#

I I

●

o ‘

32


IvllL-STD-26211 March 1957

d

“QETAILS OF LOAD POSIT; ONS 4. !5. ANDDRAWING “E-4”

e

u~uIJda’z

i

+CJLLRO,Nt +—52’~_

SIDE VIEW

NOTE. %36” FROM FRONT BUMPER WHEN CRANE

— IS SPOTTED AT AISLE EDGE NEAREST LOAD

DRAWING Q

32



5.2.2.2.4 Duratimt of the perfor?nunce test.The performance test specifid in this etand-ard shall be conducted 8 hours per day, 5 daysper week, for a period of 3 weeks, or a totalof 15 operating 8-hour days of test. BY meansof the accelerated wear features built intothe performance test, this period is intendedto be the equivalent of approximately 3.5months of normal cran truck operation.

5.2.2.3 Coalitions of course during test.The test course shall be dry, clesn, and freeof any non-planned obstacles or foreign ma-trial during the course of the test.

5.2.2.4 Periodie muh%nmce. On the 4fi8th, and 12th operating days of the perform-ance test the “Preventive Maintenance Serv-ice and Inspection ( Schdule “A” ), shall beconducted according to the provisions of“Preventive Maintenance of Materials Han-dling Equipment” (NAVSANDA Publica-tion 249).

Thie procedure shall be carried out afterthe machine under test has completed per-formance test requirement on the days spec-ified. However, no repairs or replacement ofparts shall be permitted.

5.2.2.5 Method of negotekting course. Themachine under test shall begin each lap atthe point labeled “START” on Drawing E-4.As the operator starta the machine undertest, he shall operate the horn for approxi.mately 1 second, turn off and turn on theheadlights. In lap number 1 it ehall proceedforward along the portion of the coursemarked “A” until it reaches the first loadarea. A test standard load shall be placed inthis location. The maehhe under test shallslue 90° to the right and remove the teatstandard load from Position 1. It ehall slue90° to the left and proceed along the mainaisle in the portion of the course marked “B”until it reaches Position 2.

The machine under test shall slue 90” tothe left and set down the test standard loadin Position 2. It then shall slue 90° to the

right and proceed forward along the mainaisle in the portion of the course marked“C” until it reaches Position S.

The machine under test shall slue 90° to e

theright and pick up the test standard loadin Position 8. It then shall slue 90° to the .]eft and proceed forward along the main aislein the portion of the course marked “D” untilit reaches the obstacle test in the potilon ofthe course marked “E”.

The obstacle test shall be traversed by the .machine under test being driven through thisarea in a straight line parallel to the guideline so that ita left wheels pses over the firatblock and its right wheels paaa over the sec-ond block. This part of the test may be con- ●ducted at low speed. However, the machineunder test shall not be etopped prior to orwhile going over the blocks.

The machine under teat shall proceed fur.ther along the main aisle in the portion ofthe conrse marked “F” and “G” until itreaches the position on the ramp labeled“Stopping Point” on the drawing. Here the

●driver shall stop the machine and then re-sume mounting the ramp. After the top ofthe ramp is reached he shall proceed alongthe main aisle in the portion of the coursemarked “H”, “1”, and “J”.

When the machine under test reaches theportion of the course marked “K” on the ●drawing, the driver shall stop it and thenrestart it. After completion of thkapofilon ofthe test he shall proceed along the main aisleto the point marked “Stop” on the drawing,where he shall again stop the machine. Allstops shall be at the maximum safe decelera-tion rate.

In the second lap the machine under testshall re-enter the pofilon of the coursemarked “A” on the drawing. In portions “A”,“B”, “C”, and “D” the procedure shall bethe same as described for lap number 1, ex-cept that the machine under test shall @ ●down a test load at each point where pre-viously it was indicated that the machinepicked one up, and pick up a test load where

●34


MIL-STD-262

●

9

I.

●

●

●

previously it was indicated that one shouldbe eet down. Maneuvers in the balance of thecouree, and the order in which the course iscovered beyond the portion marked “D” onthe drawing, ehall be the came as describedfor lap number 1.

Lap number 3 shall be identical with lapnumber 1, except that Position 4 shall besubstituted for Position 1, Position 5 ehallbe substituted for Position 2, and Position 6shall be substituted for Position 3. Also, theindicated direction of sluing at each of thethree positions in lap number 1 shall be re-.versed in lap number 3.

Lap number 4 shall be identical with lapnumber 2, except that references in the de-scription of lap number 2 to lap number 1should be changed to lap number 3.

The driver of the machine under test shallkeep the boom in the direction the machineunder test is traveling and within the per-missible aisle limite at all times while trav-ersing the performance course.

The “Hourly Time Record Sheet” on thefollowing page shall be filled out for eachoperating hour of the performance test.

5.2.2.6 Operating limitations. The cranetruck under teet shall not be permitted toleave the bounds circumscribed in DrawingE-4, nor shall the procedure requirementsspecitied herein be altered.

5.3 Post-test.

5.3.1 When given. The post test shall heconducted after a machine has completed the

1lMarch 1957

performance test or, if it fails the perform-ance test, the inspection portion of this pro-cedure shall be conducted after such a failure.

5.3.2 Composition. The post-teat consistsof 2 parta:

A. Post Test Inspection TestB. Post Test Inspection Form

5.3.3 Deeeription of the Post Test Inspec-tion Teste. These tests shall be performed inaccordance with the following schedule:

Awl<.abk

Test Fom Tat T<&

2G Steering Wheel7G Travel Speed

15G Wear of Steering Mechanism16G Acceleration17G Stopping Distance

5.3.3.1 How recorded. Each of the ques-tione contained in tbe Post-Test InspectionTest Check Sheet shall be answered by per-eonnel designated by the Test Officer byplacing an “X” in the column headed “Yes”or “No” as appropriate.

5.3.3.2 How evaluated. After completion ofthe Post-Test Inspection Test Check Sheetany “X” in the “No” column shall be causefor rejection of the truck.

5.3.4 Po8t-Teet Inspection Form. Pereonnelunder the direction of the Test Officer shallexamine the truck under test, make applica-ble notation in the Post-Test InspectionForm, and shall perform overload teats re-quired in Specification MIL-G3988 utilizingstrain gages and similar equipment to deter.mine deformation.

36



HOURLY TIME RECORD SHEET

TruckManufacturer

Mode- Test Locatio


Clock Rsadings:

Finis~

hD W.tekl E1.wed

Nwnber Reading TimeRemarks

1

2

3

4

5

6

7 ●8

9

10

11

12

13 ●14

15

16

17

16

19 ●—20

ToM

tnstructwmfor Timing Pwfor?nmw Te8t

1. Start decimal minute stop watch at zero at beginning of each operating hour.2. Record watch reading at end of each lap in “Watch Readin& space.3. Subtract watch reading at end of preceding lap from reading at end of lap. Record

di!Terence in “Elapsed Time” apace.4. If truck under test completes 20 laps prior to completion of an operating hour,

truck is to be stopped until start of next hour, and then resume performance test.

5.3.5 Commutator damage. During the recommend rejection of the machine undercourse of the postAest inspection, mainte- test. A report of the findhgs of this examina.nance personnel shall examine the commuta- tion shall be prepared by the Test Officer and ●tor of the main drive motor(s). If any pitthg shall becomes portion of the official test re-is found in this part, the Test Officer shall port of the machine under test.

36*



POST-TEST INSPECTION TEST CHECK SHEET

CRANE TRUCE WAREHOUSE, ELECTRIC, SOLID RUBBER TIRES


Tmck Mfgr Date

lvfode~ Test Location


AIJ#licab&Commmmla TestForm It%m ToBeCh.eked Ye. No

Steering wheel

Speed

Wear of 8teeringmechanism

Acceleration

Stopping distance

2G

2G

2G

7G

7G

15G

16G

17G

1s the maximum gage reading required to turn the steeringwheel in a counterclockwise direction 20 pounds or less?

Is the maximum gage reading required to turn the steeringwheel in a clockwise direction 20 pounds or less?

Is there any evidence of permanent deformation to steeringwheel, column, related mechanical and/or hydrauliclinkage.

Is average forward speed with maximum rated load atleast 3% miles perhcmr?

Is average forward speed without load atleast4 miles perhour?

Is the free play of the steering wheel after the performancetest not more than 1.5 times the free play of the steeringwheel before the performance test?

Is average acceleration for first 22 feet from a standingstart at least:

2.2 feet per second per second fortruck without load?2.0feet per second per second for truck with maximum

rated load?

Is average stopping distance from rated speed not greaterthan 5 feet when normal braking is applied?

37



POST-TEST INSPECTION FORM

INSTRUCTIONS: Exami?e each itimbelow insufficient detiilti detirmine,any defectsor excessive wear which bsve caused failme in test or might cause failure in normal

operation. Place acheckmarkinccdumn lVo. 1 or No. 2. If col”nm No.2 i~ checked,also check column Nos. 8, 4, or 5.

(1) (2) (8) (4) (6)

Description Not

OK OK AdfIut Een.ir Z.lacd

1. Batteries

2. Brake

8. Clutch

4. Contacts

6 Cooling

6. Differential

7.DriveAxle

8.DriveShaft

9.ElectricComponenb

a. Battary Blo&ng

b. Contactor

c. Controller

d. Collector Ring

e. Foot Pedal Control

f. Interlocked

i3. Instmmentg

h. Limit Switch

i. Line Breaker

j. Plug and Receptacle

k. Power Unit (Motors, e%)

1. Resistor

m. Seat and Brake Switih

n. Speed Control

0. Wiring

10. Engine

11. Forks

12. Frame and Body

38

●


MIL-STD-26211 March 19S7

POST-TESTINSPECTION FORM (Continued)

(1) (2) (8) (4) (s)DacriDticm Not

ox ox Adjwt f2.3wi7 EwlUU

13. Fuel System

14. Hydraulic

a. Control Levers and Valves

b. Crosshead and PuII-Down Rod

c. Lift Cylinder

d. Lift Chains

e. Lines and Fittings

f. Mast Carriage and Rollers

g. Mast Column

h. Oil Tank

f. Pump

j. Tilt Cylinder

15. Mutlfer

16, Springs

17. Steering

16. Transmission

19. UniversaI

20. Wheels

21. Wheel Steer Parts (Electric)

NOTE: Place remarks opposite the proper number on the reverse side of this form.If more space is required, attach separate sheet. Remarks should include details ofadjustments, repairs, or replacements indicated by check marks above.

Truck Mfgr Date

?&de] Test Locatioe

SeriaI No. Mechanic

L ‘=’””” ‘if’‘ei=h~ Payroll No I

39

— --


11 March 1957

MIL-STD-262

POST-TEST INSPECTION FORM (Continued)

1. Batteries II2. Brake II

II

3. Clutch

4. Contacts

5 Cooling II6. Differential

1. Drive Axle

‘E1ectriccOmpOnenh,~8. Drive Shaft

a. Battery Blocking II

b. Contactor IIII

c. Controller

d. Collector Rinr

e. Foot Pedal Control II

f. Interlocked II

g. Instruments

h. Limit Switch

i. Line Breaker

j. Plug and Receptacle II

k. Power Unit (Motors, etc.) II1. Resistor

m. Seat and Brake Switch

n. Speed Control II

0. Wiring II

10. Engine II

11. Forks IIII

12. Frame and Body

13. Fuel SYstem

14. Hydraulic II


MIL-STD-262~lMarch 1957

POST-TEST INSPECTION FORM (Continued)

14. Hydraulic (continued)

•~ d. Lift Chains

=a Lines and Fittings II

20. Wheels II

21. Wheel Steer Parts (Electric)

@—

Copies of specifications, standards, drawings, andpublications required by contractors in connectionwith specific procurement functions should be ob-tained from the procuring agency or as directed bythe contracting officer.

Copies of this standard for Military use may be

●obtained as indicated in the forward to or 6-eneralprovisions of tbe Index of Military Specificationsand Standards.

Copies of this standard may be obtained for otherthan offfcial use by individuals, firms and contractorsfrom the Superintendent of Documents, U. S. Gov-ernment Printing Office, Washington 25, D. C.

Both the title and identifying symbol numbershould be stipulated when requesting copies of Mili-tary standards. 6

Cmtodians:Army-+mrtermaster CorpsNavy-Bureau of SttppUea and AcxmmfsAir Force

Other interest :ArmyNzwy-AMCOrSH

Prepzmi”g Acti~ity:Navy-Buream of Snppffes and Acmunfa

●*U. x OOVEBNMENT PRINTING oFFIOE : 401807-19Q-(W55)

41

— /-
