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CAT OFF-HIGHWAY TRUCKS

Body System

Selection GuideThe Cat line of body systems offers a range of application-specific optionsthat is unprecedented. This guide will help you choose the right body

system to match your particular job conditions.

770772

773F775F

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Grade Over 12% Dual-slope

Up to 12% Flat-foor Dual-slope

Material Metering Flat-foor

Bed Selection

1 STEP ONE

Choose between Dual-slope and Flat-loorTwo critical factors affecting the choice of bed style are:

Grae

Dual-slope beds retain loads better on steeper grades.

MaterialMeterig

Flat-floor beds have excellent material metering capabilities.

STEP TWO

Choose the liner to complete the body systemThree critical factors affecting the choice of liners are:

MaterialCoitioPoorly fragmented material requires a heavier liner to

absorb the impact of the load and to optimize the life

of the body. At the same time, if the liner is heavier

than required for the given material condition, it will

compromise the payload due to increased liner weight.

MaterialAbrasiveessDepending on the material abrasiveness, choosing the

right liner is important to optimize the life of the body

system. Heavy duty steel and rubber liners provide

superior protection in highly abrasive material conditions.

OperatorComfort

Rubber body systems, with their excellent impactabsorption, provide the maximum level of operator comfort.

Rubber liners also absorb sound, minimizing spectator noise.

2

Body SystemSelection Guide

CAT OFF-HIGHWAY TRUCKS

Dual-slope Bed Flat-loor Bed

77

77773775

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WEAR Typical Liner Lie Loading Tool Tip Lie

Trying to correlate loading tip wear to liner lie

Howmanyhoursareonthetrucklinerwhenitisreplaced?

Howmanyhoursareonthebuckettooltipswhentheyarereplaced?

Low Greater than 20,000 hrs. Greater than 1,000 hrs.

Medium 10,000 to 20,000 hrs. 250 hrs to 1,000 hrs.

High Less than 10,000 hrs. Less than 250 hrs.

IMPACT Clearance Loading Tool to Body AverageMaterialFragmetatio Maximum Material Size*

Low* Less than 30 cm (Less than 12) Less than 2.5 cm (Less than 1) 30 cm (12)

Medium 30 cm to 60 cm (12 to 24) 2.5 cm to 30 cm (1 to 12) 60 cm (24)

High Greater than 60 cm (Greater than 24) 30 cm to 60 cm (12 to 24) 90 cm (36)

*LowClearancecategoryappliesonlytothe770&773Ftrucksduetothesidewallheight.Exceedingmaximummaterialsizewilladverselyeffectbodylife.Toachievedurabilityofthebody,loadingmaximummaterialsizerocksintherstpassisnotrecommended.

Loading tool clearance is the vertical distance between the loader bucket and body sidewall while dumping material into the body.

Howmuchdistanceistherebetweentheloadingtoolbucketandthebodysidewallduringloading?

Whatisthefragmentationsizeofthematerialandisituniformsize?

Other Considerations

Willbodyexhaustberequiredtokeepmaterialfromstickingtothebodyliner?

Rubberlinersofferfourtimestheimpactresistanceofsteelaswellasreduceimpactloadingnoisebutcannot

be used with body exhaust option.

Ifthepresentbodylinerhasdeformationmarksontheoororsides,athickerlinershouldbeconsidered.

SeeSpecialInstructionInspectionProcedurefortheTruckBodyandBodyLinerPlatesmedianumberREHS5062-00

formoreinformationaboutdeformationmarksandlinerwear.

ApplicatioLiner Systems Side Wall / Front Wall / FloorExample:6mmsidewallliner/0additionalfrontwallliner/16mmoorliner

WEAR IMPACT6/0/8 mmSteel *

8/0/16 mmSteel

8/0/20 mmSteel

12/12/25 mmSteel

Quarry Body25mm Floor

No Liner

8/0/104 mmRbber

Low

Low

Medium

High

Medium

Low

Medium

High

High

Low

Medium

High

CATBOdyLInERSELECTIOnGuIdE

RECOMMEndEd

POTEnTIALTOBEuSEd

nOTRECOMMEndEd

DualSlopeandFlatFloorBaseBodieswithoutlinersSideWall8mm/FrontWall16mm/Floor10mmTotalbodypackage=basebodypackage+bodylinerpackage*6/0/8mmSteelBodyLineravailableonlywiththe770and772trucks.

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AEXQ0108-02

2010 Caterpillar Inc. All rights reserved.CAT,CATERPILLAR,theirrespectivelogos,CaterpillarYellow,thePowerEdgetradedressaswellascorporateandproductidentityusedherein,aretrademarksofCaterpillarandmaynotbeusedwithoutpermission.

1 2 3 4 5 6 7 8MOHHARDNESSSCALE

Quarry Body Body + Liner

QCTBOdySELECTIOn&MATERIALHARdnESS

Quartzite

Granite

Sandstone

Pyrite

Magnetite

Basalt

Limestone

Slate

To better serve the quarry and aggregate industry, a new quarry body is now available.

Thisnewbodyisdesignedtohandlelowtomediumdensity/abrasivematerialwithoutthe

useofliners.Theyaredesignedwitha400HBNsteelbody.Thishighqualityhardened

steel is much more abrasive resistant and leads to greater wear resistance, and less

weight, while eliminating the use of liners in most material. This will result in lower cost pertonnes, increased payloads, and lower operating cost by eliminating liner replacement and

maintenance costs.

The following chart outlines quarry material, material hardness, and selection guidelines for

theQuarryBody.Dependingonmaterialdensity,sideboardsmaybeneededtoreachrated

payload.Pleaseconsiderthe10/10/20policywhenequippingyourtruckbodywithsideboards.

The10/10/20policystipulatesthatnomorethan10percentofloadsshouldexceedthetarget

payload by 10 percent and no load should exceed the target payload by 20 percent. This policy

wasdevelopedtoprovidetheoptimallowcostsolutionwhileachievingmaximumtrucklifewith

minimum downtime.

TheQuarryBodywillbeavailablein2010*forthe770,772,and775FQuarryConstructionTrucks.

New Quarry Body OeringCAT OFF-HIGHWAY TRUCKS

* ProjectedreleasedatesforthenewQuarryBodieswillbeavailableforthe770inMarch2010,

July 2010 for the 772 and October 2010 for the 775F.