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"CI"~I'LC:~ INC. WITHOUT THE AUTHORIZATION OF :;CE=:SS;ORS. ALLIS CHALMERS AND IT'S SUCCESSORS
THE QUALITY OR ACCURACY OF THIS MANUAL.
CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, PTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.
Make: Allis Model: 7040
Years Made: Chalmers 1975-1977
Make: Allis Model: 7060 Years Made: 1975-1981
Chalmers
HP-PTO: 136.49 HP-Engine: HP-Drawbar: 114
HP-PTO: 161.51 HP-Engine: HP-Drawbar: 136
HP-Range: 136 Engine-Make: Engine-Fuel: AC DIESELfTURBO
HP-Range: 162 Engine-Make: Engine-Fuel: AC DIESELITURBO
Engine-Cyl(s)-CID: Transmission-Optional:
6/426 STD:PS Engine-Cyl(s)-CID: Transmission-
Optional: 6/426 STD:PS
Fwd/Rev Standard: Fwd/Rev Mfwd-Std/Opt:
20/4 Optional: Fwd/Rev Standard: Fwd/Rev
Mfwd-Std/Opt: 20/4 Optional: 12/2
Tires-Std Front: Tires-Std Wheelbase-10.00-16 Rear: 18.4-38 Inch: 106
Tires-Std Front: Tires-Std Wheelbase-Inch: 106
10.00-16 Rear: 18.4-38
Pto Type: IND Pto Speed: CAT 1-3pt Hitch: 5041000 False
Pto Type: IND Pto Speed:
CAT l-3pt Hitch: False 5401000
CAT 11-3pt Hitch: CAT l11-3pt Hitch Lift:
True Hitch: True CAT l1-3pt Hitch: CAT l11-3pt
Hitch Lift: True Hitch: True
Hydraulics-Type: Hyd-Cap: Hyd-Flow:
OPEN Hydraulics-Type:
Hyd-Cap: Hyd-Flow: OPEN
Hyd Std Outlets: 2 Cooling Fuel Tank Capacity: 31 Capacity: 51
Hyd Std Outlets: 2 Cooling
Fuel Tank Capacity: 51 Capacity: 32
Cab-Stdm AlC; Weight: 11511
New Price: Rops:STD 24550
Cab-Stdm AlC; Weight: 12213 New Price: 48696
Rops:STD
Make: Allis Model: 7080
Years Made: Chalmers 1975-1981
ABOVE PTO GUARD 7080
HP-PTO: 181 HP-Engine: HP-Drawbar: 148
Year Beginning Serial Number
HP-Range: 181 Engine-Make: Engine-Fuel: AC DIESELfTURBO
1974 1001
Engine-Cyl(s)-CID: Transmission-Optional:
6/426 STD:PS 1975 1007
Fwd/Rev Standard: Fwd/Rev Mfwd-Std/Opt:
20/4 Optional: 1976 1572
Tires-Std Front: Tires-Std Wheelbase-11.00-16 Rear: 20.8-38 Inch: 106
1977 2051
Pto Type: IND Pto Speed: CAT 1-3pt Hitch: 1000 False
1978 3001
CAT 11-3pt Hitch: CAT l11-3pt Hitch Lift:
True Hitch: True 1979 3268
Hydraulics-Type: Hyd-Cap: Hyd-Flow:
OPEN 1980 3648
Hyd Std Outlets: 2 Cooling Fuel Tank Capacity: 36 Capacity: 67
1981 3954
Cab-Stdm AlC; Weight: 13638
New Price: Rops:STD 54561
ABOVE PTO GUARD 7040
Year Beginning Serial Number
1974 1001
1975 1303 Paint Codes I 1976 4129 Location I MFG Color Name
1977 6839 FRONT AND REAR WHEELS ACCREAM
CAB AND TIN WORK ACPERSIANORANGE2
ABOVE PTO GUARD 7060 BODY I ACMAROON
Year Beginning Serial Number REAR RIMS I ACALUMINUM
1974 1001
1975 1299
1976 2741
1977 4580
1978 6001
1979 6789
1980 7693
1981 8442
Litho in U.S.A.
SECTION A - ENGINE
?
F I1qirw Description
Fits wtl Tolerances.
..................•............... A-3· A-4
.. _ ... _ ...........•.•............ A-5 - A-22
S['I"'cdic,l1ions ..... ....................... _ ........ A-23 -- A-24
-1 T miJll" SrlCC ificat ions, 801 ts ~df)SCreW & Nuts ...................... A-25 - A-26
1. F,,~pnc Cooling System .. . ............................ A-27 - A-39
G Intake Manifold Intercooler ..
I Fxhaust Manifold & TurbocharqPr
8. Engine Lubricating System .....
Valves, Valve OperatinC) Mf'(:hanisfll & Cyl inder Head .....
iO Crankshaft Pulley, Timing Gf':lr C,wPr & Crankshaft Front Oil Seal
11 Cilfllshaft & Camshaft Bearinfls .
........................ A-40 - A-42
.........•............. A-43 - A-56
.................. " .... A 57 - A 64
. _ ... _A-65 A 79
.. _ .f>. 80 - A-83
. .. A-84 - A-89
12. Crankshaft & Crankshaft Geilr Milin Rpilrinfls. & Main Bearing Caps ...... .
13_ Pistons, Piston Rings, Connpctinfl Roris & Connecting Rod Bearings .
14. Cylinrier Block & Cylinder SIf'f'vt'
15. Flywheel, Ring Gear, Rear MOlllltinq t'llat(! & RpM Crankshilft Oil Sf''' ,
Engin!' ~isa'w'rnh'y &. Assernhlv
. A 90 - A98
.... A-99- A-l06
.A 10/ - A 116
............. _ .A 117 - A 119
............. A 120- A 121 16.
17.
18_
Trauh'p Shootinq .... _ ......... _ ............................ A-122 - A 129
Making Compression Test .................................... A-130 - A-131
19. EnllineTools ....................................•................ A-132
20. Fuel Injection Pump ....................................... A-133 - A 197
7030 - 7080 Tractor A-I
A
9003417 (11/75)
ENGINE
FITS AND TOLERANCES (Cant'd)
11. Exhaust and Intake Valve Springs (Prior to Engine SIN 3030829) Spring Only
7030
Spring w/Oamper
d Valve spring free length . . . IJ. Valve spring length (valve closed).
2·17/32" approx. 2.237"
2·17/32" approx. 2.237"
{- Valve spring length (valve open) d. Spring load at 2.237" length e Spring load at 1.780" length
11 A. Exhaust and Intake Valve Springs (Effective Engine SIN 3030829)
J. Valve spring free length . . . . ll. Valve spring length (valve closed) c. Valve spring length (valve open) d. Spring load at 2.237" length c. Spring load at 1.780" length
1.780" 38·42Ib. 95·105 lb.
1. 780" 40·46Ib. 105·115Ib.
2·11/32" 2.237" 1.780" 40·46Ibs. 105· 1151bs.
NOTE: Install new spring when old spring is 5% below the low limit or 5% above the high limit.
12. Intake Valves
d. V31ve lift (at valve) w/0.015" lash b_ Valve lift (at cam) c. Seat angle . . . . . d. Valve seat contact width e. Valve lash (cold) . . . f. Valve lash (engine coolant at normal operating
tem peratu res) g. Head diameter. 11 i. Overa II length . I. Stem diameter. 1- Valve must be recessed in head
13. Exhaust Valve Seat Inserts
a.
b. c. d. c. f. g.
h.
Seat angle Seat contact width Seat run-out Insert press fit. . Insert 0.0. not installed Bore in cylinder head for insert Depth of counterbore in cylinder head for insert
(from bottom deck of head) Oversize insert. . . . .
14. Intake Valve Seat Inserts
a. Seat angle b. Seat width c. Seat run·out d. Insert press fit. e. Insert 0.0. not installed f. Bore in cylinder head for insert g. Depth of counterbore in head for insert (from
bottom deck of head) h. Oversize Insert. . . . . . . . . . . . .
0.462" 0.318" 29° 30' 3/32" 0.018"
0.015" 1.834" . 1.844" 6.016" 0.3715" . 0.3720" 0.054" . 0.068"
30° 3/32" 0.002" 0.001" . 0.003" 1.667" . 1.668" 1.665" . 1.666"
0.4735" . 0.4755" 0.005" over standard
30° 3/32" 0.002" 0.001" . 0.003" 1.8110"·1.8120" 1.809" - 1.810"
0.4585" . 0.4605" 0.005" over standard
9003417 7030 - 7080 Tractor
A-8
7040
Same Same Same Same Same
Same Same Same Same Same
Same Same Same Same Same
Same Same Same Same Same
Same Same Same Same Same Same
Same Same
Same Same Same Same Same Same
Same Same
Litho in U.S.A.
DM FUEL INJECTION PUMP INDEX
GENERAL A. Purpose of the Manual. ............................................. A·134 B. Model Number System ............................................. A·134 C. General Information ...................................•.....•..... A·134
SECTION I - CONSTRUCTION & OPERATION A. Components & Functions ........................................... A·135 B. Fuel Flow ........... , ........................................... A·136 C. Transfer Pump .................................................... A·137 D. Charging & Discharging ............................................. A·138 E. Delivery Valve Function ............................................ A·139 F. Return Oil Circuit ................................................. A·140 G. Mechanical Governor ............................................... A·140 H. Automatic Advance ................................................ A·141
SECTION 2 - REMOVAL FROM ENGINE ....................•............ A·142
SECTION 3 - DISASSEMBLY .................................... A·143 - A·152
SECTION 4 - PARTS INSPECTION A. General Inspection ................................•....•.......... A·153 B. Detailed Inspection ................................................ A·153 C. Supplementary Inspection .................................... A·154 - A·156
SECTION 5 - REASSEMBLy ...............................•..•• A-157 - A·169
SECTION 6 - TORQUE CONTROL ...................................... A·170
SECTION 7 - BENCH TEST PROCEDURES Fuel Injection Pump Specifications .............................. A·171 - A·173 Special Test Bench Requirements ..................................•.. A·174 General Test Procedure ...................................... A·175 - A·176
SECTION 8 - INSTALLATION HAND PRIMER PUMP ....................... A-174 Fuel Injectors ............................................. A·178 - A·187
SECTION 9 - GENERAL DATA....... . .............................. A-188 Torque Values ...................................•......•..•...... A·189 Exploded View .............................•..................... A·190 Trouble Shooting ....................................•.•... A-191 - A-192
7030 - 7080 Tractor A-133
9003417 (11/75)
Litho in U.S.A.
SECTION B. HYDRAULICS
INDEX
I. Introduction to the Hydraulic System ......................... 8-2 A. Pumps .............................................. B-2 B. Sumps .............................................. B-3 C. Circuit Diagrams ...................................... B-3
II. Rear Housing Filtering Circuit ............................... 8-9 A. Gear Pump Filter ...................................... B·9 B. Filter Replacement .............................. ; ..... B-9 C. Gear Pump Pressure Flow .............................. B-1 0 D. Piston Pump Filter ................................... B-12 E. Surge Chamber ...................................... B·14 F. Gerotor Pump I ntake Screen ............................ B-14
III. Power Steering & Rear Housing Lubrication Circuit ............. 8-16 A. General Information .................................. 8-16 B. Pump .............................................. B-16 C. Flow Divider ........................................ B-17 D. Priority Oil Flow ............................ '" ...... B-18 E. Secondary Oil Flow ................................... 8-21
IV. 3-Point Hitch & Remote Ram Control Circuit .................. 8-25 A. General Information .................................. 8-25 8. Pump Operation ..................................... B-25 C. Circuit Pressure Lines & Ports ........................... B-28 D. Priority Valve ....................................... B-28 E. 3-Point Hitch Control Valve ............................ 8-28 F. Remote Ram Control Valves ............................ B-31
V. 8rake, Differential Lock & P.T.O. Clutch Control Circuit ......................................... 8-40 A. P.T.D. Clutch Valve ................................... 8-40 B. Turning Brakes ...................................... 8-45 C. Differential Lock Valve ................................ B-50
VI. Power Director Clutch & Transmission Circuit ................. 8-56 A. Pump & Pressure Line ................................. 8-56 B. Pressure Regulating Valve .............................. B-57 C. Cooler By-Pass Valve .................................. B-58 D. Inching Operation .................................... 8-58 E. Low to High Range Shift ............................... 8-62 F. High to Low Range Shift ............................... 8·65 G. Power Director Clutch ................................. B-65 H. Transmission Lubrication .............................. 8-67 I. Scavenger Pump ..................................... B-67
VII. Testing the Hydraulic System ..••••..•.•.....•.•••.•....... 8-68 A. Testing Gear Pump & Power Steering Circuit ............... B-68 B. Testing 3-Point Hitch & Remote Ram Circuit ............... B-69 C. Testing Brake & P.T.D. Clutch Circuit ..................... B-74 D. Testing Power Director Transmission Circuit ................ B-76
VIII. Trouble Shooting the Hydraulic System ..•.....•••.•..•.••... 8·80
IX. Repair of Hydraulic Components ........•.....•••..•••••.• 8-132 A. Hydraulic Pump Repair ............................... 8-132 8. Repair of Hydraulic Valves ............................ 8-145 C. Cylinder Repair ..................................... B-172 D. Traction Booster & Position Control Linkage
Function & Repair ................................. B-175
7030 - 7080 B-1
B
9003417
Litho in U.S.A.
II. POWER STEERING CIRCUIT
TROUBLE SHOOTING PROCEDURE
INDEX
~.
A. COMPLETE LOSS OF POWER STEERING ......•.••........•..... B·B6
B. STEERING WHEEL TURNS FREELY WITH NO ACTION OFFRONTWHEELS .............•.......•.......•........... B·86
C. STEERING IS HARD OR SLUGGISH ..•.•........•....••••...... B·87
D. STEERING WHEEL KICKS, JERKS, OR TURNS BY ITSELF ••.•..•.. B-88
E. STEERING OK HYDRAULICALLY BUT TAKES EXCESSIVE EFFORT TO TURN WHEEL ............•.. " .. " ............ " B·88
F. STEERING WHEEL DRIFTS TO RIGHT .......................... B·88
G. NOT ENOUGH PRESSURE TO TURN WHEELS .....•...••..•••••.. B·89
H. FRONT WHEELS TURN TO LEFT AND STAY THERE .••.•.••.••..• B·89
I. TAKES MORE TURNS OR STEERING WHEEL TO MAKE FULL TURN IN ONE DIRECTION THAN IN OTHER .......•..••.•.•.... B·89
J. CONTINUOUS FAILURE OF GEAR PUMP ......•...•..•..••.•... B·89
K. OVERHEATING OF OIL IN REAR HOUSING SUMP ..•....••....... B·90
L. FAILURE OF BRAKE OR P.T.O. CLUTCH PLATES DUE TO LACK OF LUBRICATION .................................. B.90
7030 -7080 8-85
. HYDRAULICS.
9003417
Litho in U.S.A.
III. 3·POINT HITCH AND REMOTE RAM CIRCUIT
TROUBLE SHOOTING PROCEDURE
INDEX
1. 3·POINT HITCH PROBLEMS
A. 3·POINT HITCH VALVEWILL NOT LIFT A LOAD-
Page
Remote Valves Okay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. B·92
B. 3-POINT HITCH VALVE WILL NOT LIFT A LOAD-Remote Valves Do Not Work Either. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. B-93
C. 3-POINT HITCH RAISES LOAD TOO SLOW ...................... 8-94
D. 3-POINT HITCH WILL NOT LOWER ............................ , B-95
E. 3-POINT HITCH WILL NOT STAY UP ...... , .................... B-96
F. ERRATIC TRACTION BOOSTER SYSTEM ....................... B-96 t
G. 3·POINT HITCH FALLS WHEN REMOTE VALVE IS USED ............... , ........................... , B-R6
2. REMOTE VAL VE PROBLEMS
A. REMOTE VALVES WILL NOT RAISE LOAD-3-Point Hitch Works Okay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8-97
B. REMOTE VALVES WILL NOT RAISE LOAD-3·Point Hitr.h Will Not Raise Load Either. . . . . . . . . . . . . . . . . . . . . . . . .. 8-98
C. REMOTE VALVES WILL NOT WORK ONLY WHEN 3·POINT HITCH IS RAISED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. B-98
D. REMOTE RAMS OPERATE TOO SLOW ...•............... , ..... , B-98
E. REMOTE RAMS RAISE TOO FAST .................... , .. .. .. .. B-98
F. REMOTE Rl'.M DROPS IMPLEMENT TOO FAST. . . . . . . . . . . . . . . . . .. B-99
G. REMOTE RAM HESITATES BEFORE OPERATION WHEN VALVE IS OPENED .... " . .. ... .... ..... . .. .. . . . . ... . .. B-99
H. REMOTE RA.MS LOCK UP WHEN HEAVY TOOL IS LOWERED ......................................... B-l00
I. REMOTE RAMS LOCK UP WHEN RAISING TOOL. ................ B·l00
J. TOO MUCH PRESSURE AT REMOTE OUTLET .................... B·l00
K. PRESSURE DOES NOT FALL BACK TO STAND-BY WHEN REMOTE VALVES ARE RETURNED TO NEUTRAL ............... B-l01
L. ACTS LIKE CAVITATING PUMP IF VALVES ARE OPERATED SEVERAL TIMES ................................. B-l01
M. REMOTE VALVE SPOOL DETENTS DO NOT WORK ............... B-l0l
N. REMOTE VALVE WILL NOT SELF-CANCEL ..................... B.l02
O. REMOTE COUPLERS H.ARD TO HOOK UP ....................... B-l02
P. REMOTE VALVE SPOOL SEAL BLOWS OUT ..................... B.l02
3. OTHER 3-POINT HiTCH & REMOTE CIRCUIT PROBLEMS
A. CHATTERING NOISE IN VALVES .......................•...... B-l03
B. LINES OR a-RINGS KEEP BURSTING ........................... B-103
C. OIL LEAK AT BACK OF 3-POINT HITCH VALVE-7030 and 7050 Drawbar Tractors OnLv ............................ B.l03
D. OIL FILTER WARNING LIGHT ON ............................. B-l04
7030 - 7080 8-91
HYDRAULICS
'iO(L~' 1-
HYDRAULICS I. 3-POINT HITCH PROBLEMS
FIGURE 7 - 3-Point Hitch Valve
A. 3-POINT HITCH WILL NOT LIFT A LOAD (Remote Valve Works Okay)
1. LOW OIL SUPPLY.
Hitch will begin to hesitate at top end of lift. Steering may be affected. Check oil level at sight glass on rear housing.
2. 3-POINT VALVE PILOT CHECKS STUCK CLOSED (Figure 7).
Operate remote valve (not hooked to ram) simultaneously with 3-Point Hitch valve. If 3-Point Hitch then raises load, problem is pilot check stuck closed in 3-Point Hitch valve. Remove and free up pilot checks.
3. SPOOL NOT BEING MOVED IN 3-POINT HITCH VALVE (Figure 7)
Make sure spool is being moved rearward into raise position in valve body by observing movement of spool as lever is moved. If spool is not being moved check for broken cable or misadjusted linkage.
4. LOAD TOO H EA VY.
Attach pressure gauge to test port on P.T.O. valve. If gauge reaches 2300 - 2500 PSI at idle speed, but load is not being lifted, load is too great.
5. LEAK IN 3-POINT HITCH VALVE (Figure 7)
Remove and plug outlet line from 3-Point Hitch valve to lift ram. Attach flow tester to a pair of remote valve outlets.
CAUTION: Make sure flow control for remote valve is in full open position and return hose from tester is connected to remote valve outlet, or test will be misleading.
Check flow through remote valve at 1500 PSI with 3-Point Hitch valve in lower position, and tractor running at idle speed.
Move 3-Point Hitch valve to raise position. There should be no decrease in flow through tester. If there is, 3-Point Hitch valve has an internal leak. See test section for more details on performing this test and test 6 below.
6. LEAK IN 3-POINT HITCH RAM
If no leak can be detected in valve above, reconnect lift ram line and retest as above. Putting valve in raise should not decrease flow through tester except while lift arms are moving up.
7. RAM DISCONNECTED FROM LIFT SHAFT ARM
Lift arms often will not come all the way down. May be a grinding sound in lift arm housing. Remove lift arm housing to check,
9003417 7030 -7080 B-92
A.
B. C.
D.
E.
F.
G.
H.
I.
J. K.
L.
M.
N.
O.
P.
Q.
_ R.
S. T.
Litho in U.S.A.
IV. BRAKE AND P.T.O. CLUTCH CIRCUIT
TROUBLE SHOOTING PROCEDURE
INDEX
Page
P.T.O. CLUTCH WILL NOT ENGAGE .••...••••••••.••••.•••••••.
P.T.O. CLUTCH SLIPS UNDER LOAD ...........................
P.T.O. CLUTCH ENGAGES TOO QUICKLY •.••••••.•••••••••••..•
P.T.O. CLUTCH DISENGAGES TOO SLOWLY ••.••••••••••••••••••
P.T.O. CLUTCH DISENGAGES ITSELF ..........................
P.T.O. SHAFT WILL NOT STOP TURNING OR P.T.O. BRAKE DOES NOT WORK .....••••••••••••••••••••••.••.
P.T.O. CLUTCH OR BRAKE PRESSURE TOO HIGH .•••••••••••••••
P.T.O. CLUTCH PRESSURE TOO LOW (See "A" & "8" above.)
P.T.O. BRAKE PRESSURE TOO LOW (See "F" above.)
NO POWER BRAKES (Both Sides) ...............................
NO POWER BRAKE (One Side Only) ....•...•..•••••••••••..•••.•
NO MANUAL BRAKE (One Side Only), BUT 8RAKES WORK OKAY WITH ENGINE RUNNING .........................
NO MANUAL BRAKES (Both Sides) BUT BRAKES WORK OKAY WITH ENGINE RUNNING .•••••.••.•.•••••••••••••
BRAKE PEDAL GOES SOLID BUT BRAKE DOES NOT APPLy ...•...........•.•...•.•••••.•••••••••••••••••••
DELAY BETWEEN TIME BRAKE PEDAL IS DEPRESSED AND 8RAKE APPLIES OR "SPONGY" FEEL ON BRAKE PEDAL •••••••••
CANNOT FEATHER BRAKES, OR BRAKES "GRAB" ••••••••••••••
BRAKES REQUIRE TOO MUCH PEDAL PRESSURE TO APPLy .................•..•..........••••••••••••••••••
DIFFERENTIAL LOCK DOES NOT ENGAGE •.•••••••••••••••••••
DIFFERENTIAL LOCK DOES NOT RELEASE .•••••••••••••••••••
DIFFERENTIAL LOCK BUTTON COMES UP TOO HIGH WHEN DIFFERENTIAL LOCK IS DISENGAGED .••.•.•.••••••••••••••••
7030 -7080 8-lOS
HYDRAULICS
B·106 -.
B·107
B·108
B·108
B·109
8·109
8·110
8·110
B·111
B·112
B·112
B·112
B·112
B·113
B·113
8·114
B·115
B·116
9003417
Litho in U.S.A.
V. POWER DIRECTOR TRANSMISSION CIRCUIT
TROUBLE SHOOTING PROCEDURE
INDEX
A. TRACTOR DOES NOT MOVE WHEN CLUTCH IS ENGAGED; ENGINE DOES NOT PULL DOWN ..••••.••••••••••••• 8·118
1. lU8E PRESSURE WARNING LIGHT OFF ..................... 8·118
2. lUBE PRESSURE WARNING LIGHT ON .•••••.••••••••••••••• 8·119
B. TRACTOR DOES NOT MOVE WHEN CLUTCH IS ENGAGED; ENGINE PUllS DOWN ..................... 0 ... 0 0 0 0
C. TRACTOR Will NOT STOP WHEN CLUTCH IS DISENGAGED ..................••••••• 0 • 0 • 0 0 0 • 0 0 0 0 0 •••• 0 0
D. TRANSMISSION BRAKE INEFFECTIVE OR CANNOT GET INTO GEAR WITHOUT CLASH .•••.••••.••••• 0 • 0 0 0 0 0 •• 0 0 0 •
E. JERKY CLUTCH ENGAGEMENT ........................... 0 .. 0
F. CLUTCH SLIPS UNDER lOAD ................. 0 ........ 0 .... ..
G. TRACTOR HESITATES ON lO TO HI SHIFT UNDER lOAD ..................•.•.•••••••••• 000.00000000 ••
H. JERKY UPSHIFT OR DOWNSHIFT .•••...•.••••••••••• 00.00.00.
I. POWER DIRECTOR Will NOT SHIFT FROM LO TO HI RANGE ................•...... ;.0 •• 0.0.0.00.0000 •• 0 ••
1. TRACTOR KEEPS GOING IN lO AND ENGINE PUllS HARDER THAN BEFORE ..••••• 0 ........... 0 ....... .
2. TRACTOR Will NOT STAY IN HI RANGE; ENGINE DOES NOT PUll DOWN ...•••••••• 00 •• 00 •• 000000000
3. TRACTOR STOPS WHEN SHIFTED TO HI RANGE •• 0 0 0 00 0 0 0 0 0"
J. POWER DIRECTOR Will NOT SHIFT FROM HI TO LO 000000000 •••
K. POWER DIRECTOR CLUTCH JUMPS INTO HI RANGE WHEN CLUTCH IS ENGAGED ........••••••••. 0 •• 0 •• 0 •• 0 • 0 • 0 ••
L. CLUTCH DOES NOT RETURN TO lO RANGE WHEN CLUTCH PEDAL IS DEPRESSED OR ENGINE IS SHUT OFF ............•.•.••••.•••••• 0 0000. 0 0 0 0 0 0
M. GEROTOR PUMP CAVITATION .............................. ..
N. TRANSMISSION lUBE PRESSURE LIGHT COMES ON AT HIGH ENGINE RPM .................................. .
O. TRANSMISSION OIL TEMPERATURE LIGHT COMES ON •••••• 0 ••• 0
P. WATER IN TRANSMISSION OIL ............................ 0 ••
Q. TRANSMISSION OIL IN ENGINE COOLANT .••• 0 •• 0 •• 0 ••••• 0 0 0"
7030 ·7080 8-117
8·119
8·121
8·121
8·122
8·123
8·124
8·125
8·128
8·126
8·126
8·127
8·127
8·127
8·128
8·128
8·128
8·130
8·131
8·131
HYDRAULICS
.;\~
s ... '"to ~,~
::-::
J
Q003417
HYDRAULICS TRACTOR DOES NOT MOVE WHEN CLUTCH IS ENGAGED -
ENGINE PULLS DOWN (Cont'd)
5. BRAKES PRESSURIZED OR HAVE PLATES WARPED
Engine does not pull down unless tractor is moving. Plug pressure line to P.T.O. valve to eliminate brake pressure and try again. If it still pulls down, remove final drives to check for warped brake plates, or other damage in final drive area.
C. TRACTOR WILL NOT STOP WHEN CLUTCH IS DISENGAGED
FIGURE 24 • Torque Limiter and Power Director Clutch
When tractor is operating in H I range at high engine RPM there will be a one to two second delay between clutch pedal movement and clutch disengagement. This is normal for H I clutch. Longer hesitation in H I clutch or any hesitation in LO clutch is NOT normal.
1. PLUGGED DRAIN ORIFICE IN HI RANGE CLUTCH (Figure 24)
Clutch will disengage better at low engine RPM than at high RPM. Will also disengage better from LO range than from HI, especially after being operated for a period of time in LO. Check further by removing HI range drain orifice plug from clutch through scavenger pump opening. I nstall screened orifice plug No. 268962 and recheck.
2. MISSING SPRING FROM HI RANGE FLYBALL OR FL YBALL STUCK (Figure 24)
Clutch will disengage slowly from H I range. LO range disengagement will not be affected unless HI range orifice is also completely plugged. Shut off
3.
tractor, start, and check LO range disengagement before operating in HI range. If LO range is okay, but HI range disengagement is still slow, check HI range orifice and flyball through scavenger pump opening.
WARPED CLUTCH PLATES (Figure 24)
Problem more severe with cold transmission oil. Tractor may try to move forward even when being started. Engine speed will not affect speed of disengagement. Transmission brake will be ineffective and may cause transmission oil overheating when operating in opposite clutch range. Requires clutch removal for verification and repair.
4. CLUTCH PLATES HANG.ING ON SPLINES OR PISTON STUCK (Figure 24)
~ Acts like warped plates. More likely to happen to HI range than LO. Will eventljally cause warped plates.
9003417 7030 -7080 B-120
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STANDARD POWER TRAIN
SECTION C. STANDARD POWER TRAIN
Tapered Bearing Nomenclature ............................................. C-2
Torque Limiter, Remove, Install ..................... ' ............•.....•.... C-3
Specifications ......................... ~.:' ...........•.•.•............... C-4
To Split Tractor for Work on Power Director Clutch ....................... C-5 - C-6
Remove Power Director from Transmission Housing ........................ C-6 - C-7
Disassemble Power Director Clutch ..................................... C-S - C-9
Assemble Power Director Clutch ..................................... C-10 - C-13
Install Power Director Clutch in Transmission ........................... C-13 - C-14
Install Engine and Front End Assembly ..................................... C-15
Remove Scavenger Pump from Housing ..................................... C-16 .
I nstall Scavenger Pump in Housing ......................................... C-16
Remove P.O. Low Range Hollow Drive Shaft with Gear, and Front Countershaft Gear ........................... ' .......... C-17
Remove P.O. Low Range Hollow Drive Shaft with Gear ................... C-17 - C-lS
Remove Transmission Main Shaft and Gears .................................. C-19
Remove Countershaft and Gears ........................................... C-20
Partly Install Countershaft and Gears ....................................... C-21
Install Reverse Idler Shaft and Gear ........................................ C-22
Install Transmission MaiA Shaft and Gear .........•.....•.•............ C-22 - C-25
Install P.O. Low Range Hollow Drive Shaft with Gear .......................... C-26
Finish Installing Countershaft and Gears ..................................... C-26
Install P.O. High Range Hollow Drive Shaft, and Front Countershaft Gear ....................................... C-27 - C-2S
Transmission Shift Cover, Remove-Install - Shift Lever,
Litho in U.S.A.
Remove-Install - Shift Rods, Remove-Install ...........•........... C-29 - C-32
Rear Main Housing Removal ........................................ C-33 - C-41
Rear Main Housing Assembly .......•.................•..•.••....... C-41 - C-60
Essential Tools .........................•.............••.••...... C-61 - C-62
Quick Reference Specifications (Power Director & Transmission Housing) (Rear Main Housing) ....•..............•.•••..•............. C-63
Power Flow and Operation of Transmission Assembly ...•••.•.•..•..••......... C-64
Power Flow and Operation of Rear Main Housing .... " ........................ C-65
Capscrew and Nut Torque ...................... ; ......................... C-66
Transmission Chart No.6
Range Transmission Chart No.7
Final Drives Chart No.8
Power Take-Off Chart No.9
7030 - 7080 Tractor C-l
c
9003417
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003411
TABLE OF CONTENTS
I. GENERAL INFORMATION . 3
II. DESCRIPTION-OPERATION A. General Description. . . . . . . . B. PST External Oil Flow ..... C. Principles of Planetary Gear Operation D. Power Shift Transmission Operation . E. Power Shift Transmission Valve Operation
III. PRE-DIAGNOSIS OF PST MALFUNCTIONS A. Pre-D iagnosis . . . . . . . . . . .
IV. POWER SHIFT TRANSMISSION TROUBLE SHOOTING TESTS & DIAGNOSIS A. Test Ports . . . . . . . . B. Use of Trouble Shooting Charts C. Test 2 - Clutch Isolation . D. Test 3 - Fluid Pressure. . E. Test 4 - Air Pressure F. Test 5 - Modulator Valve. G. Test 6 - Inching Valve . H. Test 7 - Torque Limiter .
V. POWER SHIFT TRANSMISSION VALVE & LINKAGE REPAIR A. PST Valve Removal & Disassembly . B. PST Valve Assembly . . . . . . . . . . . . . . . . C. Control Linkage Adjustment . . . . . . . . . .". . .
4 7 9
10 12
. 17
1B 19 20 20 21 21 23 24
25 27 30
VI. DISASSEMBLY & INSPECTION OF POWER SHIFT TRANSMISSION A. Remove Rear Transmission Housing from Front Housing 32 B. Remove Rear Clutch Pack Assembly . . . . . . 33 C. Disassemble Rear Clutch Pack Assembly. . . . . 33 D. Disassemble Bearing Sleeve from C2 Clutch Housing 34 E. Remove Planetary System with Output Shaft. . 35 F. Disassemble Planetary System from Output Shaft 35 G. Disassemble A2 Clutch Housing . 37 H. Disassemble B2 Clutch Housing . . . . . . . 37 I. Disassemble A 1 Clutch Housing . . . . . . . 37 J. Remove Transmission Input Shaft . . . . . . 37 K. Remove A 1 Clutch Housing from Front Transmission
Housing . . . . . . . . . . . . . . . . . . 38 L. Disassemble B 1 Clutch & Front Transmission Housing 39
VII. REPAIR AND ASSEMBLY OF POWER SHIFT TRANSMISSION A. Front Transmission Housing . . . . • . . . . . . . B. Assemble A 1 Clutch Housing . . . . . . . . . • • . C. Install A 1 Clutch Housing into Front Transmission Housing D. Install Transmission Input Shaft . E. Assemble A 1 Clutch . . . . F. Assemble B2 Clutch Housing . G. Assemble A2 Clutch Housing . H. Assemble Front Planet Carrier. I. Assemble Middle Planet Carrier J. Assemble Rear Planet Carrier . K. Assemble Planetary System to Output Shaft L. Install Planetary System with Output Shaft . • • • • M. Assemble Bearing Support Sleeve & C2 Clutch Housing N. Assemble C2 Clutch . . . • . . • • • . • . • • O. Assemble Cl Clutch . . . . . . • . . • . . • P. Install Rear Clutch Pack Assembly (Cl & C2 Clutches)
POWER SHIFT 2
40 42 42 43 43 44 44 45
• • 46 46
.• ". 47 47
• • 48 49 60
· . 50
elECTRICAL SYSTEMS
INDEX
SECTION F - ELECTRICAL SYSTEMS
I. Wiring Diagrams ................................... F-l - F-5
II. Preliminary Test Instruments & Indicators .. _ ... _ . __ .......... F-6
III. Main Circuit Breaker ................................. _ ... F-7
IV. Key Switch ......................................... _ .. F-7
V. Safety Start & Push Start Switches .......................... F-8
VI. Tachometer & Hourmeter ............... _ ................. F-9 A. Testing the Tachometer ................................ F·9 B. Testing the Hourmeter ............................... F·9
VII. Fuel & Engine Temperature Gauges ........................ F·l0
VIII. Lights & Miscellaneous Electrical Equipment ................. F·ll
I X. Light Switch & Light Circuits ............................. F-ll
X. Testing the Light Switch ................................. F·ll
XI. Warning Light Switch & Circuits ........................... F·12
XII. Indicator Light Circuits· Further Tests ...................... F·12 A. Piston Pump Filter Indicator Circuit ..................... F·12 B. Transmission Temperature Indicator Circuit ......... F·12 - F-13 C. Transmission Lube Oil Circuit .......................... F·13 D. Engine Oil Indicator Circuit ........................... F-13 E. Generator I ndicator Circuit. ........................... F ·13
X III. Cab Electrical System ................................... F ·14
XIV. Electrical Portion· Air Conditioning System .................. F·14
XV. Windshield Wipers & Dome Light .......................... F·15
XVI. Optional AM, AM·FM, Radio & Stereo Tape .................. F·15
XVII. Electrical Loads ........................................ F·15
XVIII. Batteries ....................................... F·16 - F·24
XIX. Starting Motors .................................. F·25 - F·29
XX. Delcotron Generators ............................. F·29 - F·37
XXI. Niehoff Generators ............................... F·38 - F·58
I. WIRING DIAGRAMS
Pages 3, 3a, 3b, 4 and 5 show the following wiring dia· grams:
1. Instrument Panel With: Instrument Circuits Switching Circuits Warning light Circuits
3. Cab With: light Circuits Windshield Wiper Circuit Blower Circuit Air Conditioner Circuit
4. AM, AM·FM Radio and Stero Tape
F
2. Engine and Chassis With: Starting Circuit Alternator Circuit light Circuits
These color-coded circuits make it possible to trace electrical problems to their source.
Warning and Fuel Sending Circuits
litho in U.S.A. 7030·7080
F·) QOO~417
AIR CONOITIONING
SECTION G - AIR CONDITIONING
MODEL 7030,7040,7050,7060 AND 7080
TRACTORS
TABLE OF CONTENTS
INTRODUCTION (Basic Principles of Refrigeration) .. 2
SAFETY RULES (For Handling Refrigerants) ....... 4
REFRIGERANT .............................. 4
REFRIGERATION OIL ........................ 5
COMPONENTS Compressor ............................•. 5 Condenser ...........................•... 7 Evaporator .............................. 9 Expansion Valve .......................... 8 Receiver· Drier ........................... 7 Sight Glass ............................... 7 Specifications ....................•....•• 10 Valve Positions ........................ 5· 6
DIAGRAMS & CHARTS Electrical Wiring Diagram .................. 10 Cycle of Refrigeration ........•.••...•.....• 3 Pressure· Temperature Relationship Chart 15
SERVICING AIR CONDITIONER SYSTEM Adding Refrigerant to System ............... 17 Charging the System ............•...•..... 15 Discharging the System .................... 11 Evacuating the System .....•....•..... 13· 14 Leak Detectors ................•......... 11 Stabilizing the System ..................... 17 Test Procedure .......................... 17
DIAGNOSIS AND TROUBLE SHOOTING GUIDE 19
SERVICING AIR CONDITIONER COMPRESSOR Checking Compressor Oil Level and Adding Oil . 26 Oil Level When Replacing System Components Other
Than Compressor .................... 26 Oil Level When Removing and Installing
Compressor .......•................. 27 Oil Level When Replacing an Inoperative
Compressor ......................... 28
COMPRESSOR REPAI R & REPLACEMENT PROCEDURES
Disassembly of Clutch Drive Plate & Hub, Pulley, Clutch Coil and Housing Assembly ....... 30
Assembly of Clutch Drive Plate & Hub, Pulley, Clutch Coil and Housing Assembly ....... 32
Seal Leak Detection ..................•... 35 Replacement of Shaft Seal ................. 36 Leak Testing Compressor Shaft Seal .......••. 37 Compressor Rear Head Assembly ...••..•.... 38 Compressor Pressure Relief Valve ....•.•..... 38 Compressor Tools •...............•.•..... 39
COMPONENT REPLACEMENT Evaporator •............................ 40 Expansion Valve ............•....•....... 45 Condenser .............................• 46 Receiver· Drier .......................... 47 Compressor Assembly When Servicing Engine ... 47
Litho in U.S.A. Part No. 9004621 Mailing No.2 of 9003417 7030 ·7080 TRACTOR
G-1 9003417
