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Table 1. PMCS - BEFORE - Continued

ItemNo. Interval

Item to

beCheckedorServiced Procedure

EquipmentNot Ready/Available If:

(start en-gine(WP 0041)procedurecompleted).

3. BATTERY gauge. BATTERYgauge is in-operative,or indicatesless than 24VDC ormore than30 VDC withengine run-

ning.

4. AMPERES gauge. AMPERESgauge is in-operative,or shows anegativereading withengine run-ning.

NOTE

Air pressure buzzer will soundanytime low air indicator is il-luminated. Ensure low air in-dicator and buzzer activatewhen air pressure falls below60 to 75 psi (414 to 517 kPa)in either front or rear air sys-

tem.

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ItemNo. Interval

Item to



5. AIR PRESS gauge. AIR PRESSgauge is in-operative orindicates ei-

ther systemis below 60psi (414kPa) afterengine hasbeen prop-erly warmedup (start en-gine(WP 0041)procedurecompleted).Low airpressure in-dicator and/or buzzerremain on,or do not op-erate.

6. Air filter restriction indicator. Air filter re-

striction in-dicator in-operative,cracked, orunservicea-ble.

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ItemNo. Interval

Item to



AIR BRAKE

EXEXEX

ENGINE

OFF

ON

START

TRAILER

AIR SUPPLY

PARKING

BRAKE

EXEXEX

EXEX EXEX

TRANS TEMP

GAUGE

WATER TEMP

GAUGE

FUEL GAUGE

AIR FILTER

RESTRICTION

INDICATOR

Figure 11.

NOTE

Several minutes are requiredfor engine to warm up so anaccurate reading can be tak-en.

7. WATER TEMP gauge. WATERTEMPgauge is in-

operative,or indicatesless than

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ItemNo. Interval

Item to



140F(60C) ormore than230F(110C) af-

ter enginehas beenproperlywarmed up(start en-gine(WP 0041)procedurecompleted).

NOTE

Transmission may not reach160F (71C) oil temperatureat idle for several minutes.

8. TRANS TEMP gauge. TRANSTEMPgauge indi-cates more

than 250F(121C).

9. FUEL gauge. FUELgauge is in-operative,or indicatesless thanthe requiredamount of

fuel needed

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ItemNo. Interval

Item to



to completethe mission.

CAUTION

Vehicle must be parked whenmaking this check. Failure tocomply may result in damageto equipment. Transfer casewill be damaged if shiftedwhile vehicle is moving.

NOTE

Engine must be runningto perform this check.

Transmission must be inN (neutral) to perform thischeck.

18 Before TRANSFER CASEShiftLeverand

TRACTIONCONTROL lever

1. TRANSFER CASE Shift Lever -Check operation: (WP 0045)

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ItemNo. Interval

Item to



JACOBS

CAUTION

ENGINEBRAKE

TRAILE

R

AIRSUP

PLY

NOTFO

RPARK

ING

MIDLAN

D

PULL

TOEXHA

UST

PUS

HT

O

INTER-AXLE

DIFF LOCK

INDICATOR

TRACTION

CONTROL LEVER 8X8

INDICATOR

TRANSFER

CASE SHIFT

LEVER

Figure 12.

a. Set transfer case shift leverto each range position.

b. Transfer case shift levershould move freely throughall range positions.

TRANSFERCASE shiftlever inop-erable orbinds be-tween

range de-tents.

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ItemNo. Interval

Item to



2. TRACTION CONTROL Lever -Check operation: (WP 0020)

a. TRACTION CONTROL lever

should slide smoothly, andinteract with transfer caseshift lever to show correctindications on dash panel.

TRACTION

CONTROLlever or indi-cators inop-erable.

NOTE


Engine and transmission

oil must be warm toperform this check.

Testing has shown that areading of at least 180F(64C) on the WATERTEMP gauge is sufficientto perform this check.

19 Before EngineRetarder/Brake

1. Check engine retarder/brake forproper operation (WP 0046)(vehicle stationary) using thefollowing procedures:

NOTE

Dashboard parking brake in-dicator will illuminate whenPARKING BRAKE control isapplied.

a. Pull out PARKING BRAKEcontrol.

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ItemNo. Interval

Item to



JACOBS

CAUTION

ENGINEBRAKE

TRAILE

R

AIRSU

PPLY

NOTFOR

PARKI

NG

MIDLAND

PU

LL

TOEXHA

UST

PUS

HT

O

JACOBS

ENGINE BRAKE

HIGH-LOW SWITCH

JACOBS

ENGINE BRAKE

INDICATOR

JACOBS

ENGINE BRAKE

ON/OFF SWITCH

PARKING

BRAKE

CONTROL

THOTTLE

PEDAL

TRANSMISSION

RANGE

SELECTOR

TRANSFER

CASE SHIFT

LEVER

Figure 13.

b. Set transfer case shift leverto N (NEUT) position.

c. Set transmission rangeselector to D (drive) position.

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ItemNo. Interval

Item to



d. Apply throttle pedal andincrease engine speed to1800-2100 rpm for severalseconds to allow

transmission to upshift to atleast 2 (2nd gear range).

e. Set JACOBS ENGINEBRAKE HIGH/LOW switch(1) to HIGH.

f. Set JACOBS ENGINEBRAKE ON/OFF switch toON position, JACOBS ENGINE BRAKE indicatorlight will illuminate.

g. Release throttle pedal andlisten for engine "popping" or"chattering" sounds thatindicate engine retarder/brake is engaged andoperating.

h. Set JACOBS ENGINE

BRAKE ON/OFF switch toOFF position, JACOBS ENGINE BRAKE indicatorlight will go out.

i. Apply throttle pedal andincrease engine speed to1800-2100 rpm for severalseconds to allowtransmission to upshift to at

least 2 (2nd gear range).

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ItemNo. Interval

Item to



j. Set JACOBS ENGINEBRAKE HIGH/LOW switch(1) to LOW.

k. Set JACOBS ENGINEBRAKE ON/OFF switch toON position, JACOBS ENGINE BRAKE indicatorlight will illuminate.

l. Release throttle pedal andlisten for engine "popping" or"chattering" sounds thatindicate engine retarder/brake is engaged andoperating.

m. Set JACOBS ENGINEBRAKE ON/OFF switch toOFF position, JACOBS ENGINE BRAKE indicatorlight will go out.

NOTE

Engine must be running toperform this check.

20 Before Steering 1. Check vehicle steering for properoperation:

a. Turn steering wheel from fullleft to full right, back to fullleft.

Steering in-operable orbinds.

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ItemNo. Interval

Item to



NOTE

Engine must be running toperform this check.

21 Before PTOSwitch

Set PTO ENGAGE switch to ONposition. Indicator light will illuminate.

PTO EN-GAGEswitch and/or indicatordoes not op-erate.

JACOBS

CAUTION

ENGINEBRAKE

TRAILE

R

AIRSUPPL

Y

NOTFOR

PARKIN

G

MIDLAN

D

PULL

TOEXHA

UST

PUS

HT

O

PTO ENGAGE

SWITCH

PTO INDICATOR

LIGHT

Figure 14.

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ItemNo. Interval

Item to



NOTE

Operation of vehicle with mal-functioning windshield wiper

may violate AR 385-55.(WP 0141)

22 Before Wiper/ WasherControl

1. Check wiper function of wiper/washer control for properoperation. (WP 0032)

JACOBS

CAUTION

ENGINEBRAKE

TRAIL

ER

AIRSUP

PLY

NOTFORP

ARKIN

G

MIDLAN

D

PULL

TOEXHA

UST

PUS

HT

O

WIPER/WASHER

CONTROL

Figure 15.

2. Check washer function of wiper/washer control for proper

operation. (WP 0032)

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ItemNo. Interval

Item to



NOTE


Operation of vehicle withmalfunctioningwindshield wiper mayviolate AR 385-55.(WP 0141)

23 Before ParkingBrakeControl

1. Check PARKING BRAKE controlfor proper operation: (WP 0042)

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ItemNo. Interval

Item to



AIR BRAKE

EXEXEX

ENGINE

OFF

ON

START

TRAILER

AIR SUPPLY

PARKING

BRAKE

EXEXEX

EXEX EXEX

PARKING BRAKE

CONTROL

Figure 16.

a. With vehicle at idle andservice brake pedalengaged, (WP 0043)settransmission range selectorto D (drive). (WP 0045)

NOTE

Dashboard parking brake in-dicator will illuminate when

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ItemNo. Interval

Item to



PARKING BRAKE control isapplied.

b. Pull out PARKING BRAKEcontrol. (WP 0042)

c. Release service brake pedal.(WP 0043)

Vehiclemoves withPARKINGBRAKEcontrol ap-plied (pulledout).

d. Set transmission range

selector to N (neutral).(WP 0045)

NOTE

Operator may continue onwith mission if vehicle re-quires no servicing.

24 Before Engine Shut OFF engine (WP 0054) (as

required).

END OF WORK PACKAGE

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OPERATOR MAINTENANCEDURING - PREVENTIVE MAINTENANCE

INITIAL SETUP:

Tools and Special ToolsGloves, Leather (WP 0143, Table 2)

Table 1. PMCS - DURING

ItemNo. Interval

Item tobeCheckedorServiced Procedure


WARNING

Ensure engine is OFF andeye protection is worn whenchecking for leaks. Failure tocomply may result in injury ordeath to personnel.

1 During Engine Check and/or listen for excessive

smoke, unusual noise, roughrunning, and misfiring.

Engine has

excessivesmoke, un-usual noise,runs rough,or misfires.

NOTE

Check trailer handbrake con-trol lever only if a trailer is

hooked up to vehicle.

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Table 1. PMCS - DURING - Continued

ItemNo. Interval

Item to



2 During TrailerHandbrake ControlLever

Check trailer handbrake control leverfor proper operation. (WP 0044)

Control lev-er does notapply trailerbrakes.

JACOBS

CAUTION

ENGINEBRAKE

TRAILE

R

AIRSU

PPLY

NOTF

ORPARKI

NG

MIDLAND

PU

LL

TOEXHA

UST

PUS

HT

O

TRAILER HANDBRAKE

CONTROL LEVER

Figure 1.

Listen for actuation. If none, refer toapplicable trailer operator's manual.

NOTE

During operation, all gaugesshould maintain the proper

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ItemNo. Interval

Item to



readings listed in the PMCSBEFORE checks. (WP 0125)

3 During Instruments

Monitor all gauges, indicators, andwarning lights for proper reading and

operation while operating vehicle.

Gauges, in-dicators,

and warninglights do notread/oper-ate proper-ly.

4 During Transmission

Check transmission for properoperation. (WP 0045)

Transmis-sion slips orwill not shift.

5 During Steering Be alert for any unusual noise,binding, or difficulty in steering duringoperation.

Steeringbinds or isunrespon-sive.

6 During ServiceBrakes

Be alert for chatter, noise, and sidepull.

Servicebrakes donot operateproperly.

WARNING

Keep hands clear of heavy-duty winch cable. Failure tocomply may result in injury ordeath to personnel.

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ItemNo. Interval

Item to



WARNING

Always wear protectivegloves when handlingwinch cable. Never letcable run through hands.Frayed cables can cutseverely. Failure tocomply may result ininjury or death topersonnel.

Never operate winch withless than five wraps ofcable on winch drum.Failure to comply mayresult in injury or death topersonnel.

7 During Heavy-Duty

Winch

Check cable of winch for kinks, frays,and breaks.

Evidence ofkinks, frays,

or breaks.

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ItemNo. Interval

Item to



HEAVY-DUTY

WINCH

CABLE

Figure 2.

WARNING


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ItemNo. Interval

Item to



WARNING



NOTE

PMCS for heavy-duty

winch should only beperformed when retrievalsystem is required formission.


Check all controls andhardware for properoperation, (WP 0037)

obvious damage, missing

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ItemNo. Interval

Item to



parts, binding, andexcessive looseness.

8 During Heavy-Duty

WinchVehicleMounted(Manual)Controls

1. Check winch control lever. Control mal-functions,

binds, ordoes not re-spond to in-put.

WINCH

CONTROL

LEVERWINCH

KICKOUT

CONTROL

REMOTE-CONTROLUNIT RECEPTACLE

HIGH

IDLE

SWITCH

CABLE

HOLD DOWN

CONTROL

Figure 3.

2. Check winch kickout control. Control mal-functions,

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ItemNo. Interval

Item to




3. Check cable hold down control. Control mal-functions,binds, ordoes not re-spond to in-put.

4. Check HIGH IDLE switch. Control mal-functions,binds, or

does not re-spond to in-put.

5. Check remote-control unitreceptacle.

WARNING


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ItemNo. Interval

Item to



WARNING



NOTE

PMCS for heavy-duty

winch should only beperformed when retrievalsystem is required formission.


Check all controls andhardware for properoperation, (WP 0039)

obvious damage, missing

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ItemNo. Interval

Item to



parts, binding, andexcessive looseness.

9 During Heavy-Duty

WinchRemote-ControlUnit

1. Check winch control lever. Control mal-functions,


HIGH IDLE

SWITCH

WINCH

CONTROL

LEVER

REMOTE-CONTROL

UNIT CABLE

REMOTE-CONTROL

UNIT

Figure 4.

2. Check HIGH IDLE switch. Control mal-functions,

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ItemNo. Interval

Item to




3. Check remote-control unit cable.

END OF WORK PACKAGE

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OPERATOR MAINTENANCEAFTER - PREVENTIVE MAINTENANCE

INITIAL SETUP:


Table 1. PMCS - AFTER

ItemNo. Interval



WARNING

Do not start engine or movevehicle when personnel areunder vehicle or working onbrake lines. Failure to complymay result in injury or death topersonnel.

WARNING


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Table 1. PMCS - AFTER - Continued

ItemNo. Interval

Item to



NOTE

Perform Operator's Before,After, and Weekly PMCSchecks if:

You are the assigneddriver but have notoperated the vehiclesince the last weeklyinspection.

You are operating thevehicle for the first time.

NOTE

Clean all lubricationpoints with cleaningcompound, solvent andallow to dry prior toservicing.

When using a greasegun, apply lubricant to thefitting until clean lubricantsqueezes out of the partbeing lubricated.

Always refer to lubricationinstructions (WP 0131) toensure equipment hascorrect lubricantsappropriate to operatingenvironment (expectedcontinuoustemperatures). If not,remove/drain andreapply/refill equipmentwith appropriate

lubricants for operatingenvironment as

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ItemNo. Interval

Item to



prescribed in lubricationinstructions. (WP 0131)

1 After Underneath

Vehicle

1. Check entire underside of vehiclefor fluid and air leaks.

Any fuel,Class III

leak, or airlines/fittingsleaking ordamaged.

2. Check entire underside of vehiclefor signs of fluid leakage (fuel, oil,and coolant).

Any fuelleak. ClassIII leak ofany otherfluid.

WARNING

Prolonged contact with lubri-cating oil may cause skinrash. Immediately wash skin

and clothing that come in con-tact with lubricating oil thor-oughly and remove saturatedclothing. Keep area well-ven-tilated to keep fumes at a min-imum. Failure to comply mayresult in injury or death to per-sonnel.

CAUTION

Do not fill hydraulic reservoirpast FULL COLD mark. Fail-

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ItemNo. Interval

Item to



ure to comply may result indamage to equipment.

NOTE

Hydraulic oil expandswhen heated, which maygive the operator false(high) fluid level readingsif the vehicle has beenrecently operated.

If possible, wait untilhydraulic reservoir iscompletely cooled down(minimum of 2 hours)

prior to adding hydraulicoil, otherwise fill reservoirto FULL COLD mark.

2 After HydraulicFluidReservoir

1. Check that hydraulic fluid level insight glass on hydraulic fluidreservoir is at FULL COLD mark(may be above FULL COLD markif vehicle has been recentlyoperated). If low, add hydraulic

oil to FULL COLD mark:

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ItemNo. Interval

Item to



FULL COLD

LEVEL

SIGHT GLASS

HYDRAULIC

RESERVOIR

Figure 1.

a. Remove cap from hydraulicreservoir.

b. Fill hydraulic reservoir withlubricating oil (WP 0131,Table 4) until sight glassreads at FULL COLD mark.

c. Install cap on hydraulicreservoir.

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ItemNo. Interval

Item to



2. Check appearance of hydraulicfluid in sight glass. Make sure it isclear and not milky or foamy.

Fluid ap-pears milkyor foamy.

3 After DriverSideWheels

1. Check wheels for broken,cracked, and bent surfaces. Wheel isbroken,cracked, orbent.

2. Check lugnuts and wheel studsfor obvious looseness anddamage. If loose, tighten andreport to maintenance as soon aspractical.

Two ormore lug-nuts orstuds on thesame wheelare missing,broken, orbent.

4 After DriverSideShockAbsorbers

Check driver side shock absorbersfor leaks and damage.

Damagedor Class IIIleakpresent.

5 After Rear

Exterior

Check rear of vehicle for obvious

damage that would impair operation.

Any dam-

age thatwould im-pair opera-tion.

6 After TowingGladhands

Check for presence and condition oftowing gladhands and rubbergrommets.

7 After Passeng

er sideWheels

1. Check wheels for broken,

cracked, and bent surfaces.

Wheel is

broken,

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ItemNo. Interval

Item to



cracked, orbent.

2. Check lugnuts and wheel studsfor obvious looseness and

damage. If loose, tighten andreport to maintenance as soon aspractical.

Two ormore lug-

nuts orstuds on thesame wheelare missing,broken, orbent.

8 After Passenger SideShock

Absorbers

Check passenger side shockabsorbers for leaks and damage.

WARNING

Vehicles air system is pres-surized, be sure to wear prop-er eye protection and keepface away from drain valveswhile draining air reservoirs.Open air drain valves slowlyto prevent sudden blast of air.Failure to comply may resultin injury to personnel.

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ItemNo. Interval

Item to



NOTE

Only drain air reservoirsthat are located under thepassenger side battery

box. The M983A2 and

M983A2 LET have threeair reservoirs under thebattery box, all othermodels have two.

9 After AirReservoirs

1. Drain only air reservoirs underbattery box as follows:

Figure 2.

a. Turn petcock on bottom ofreservoir to open position.

b. Let condensation drain off.

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ItemNo. Interval

Item to



c. Turn petcock on bottom ofreservoir to closed position.

CAUTION

Clean around end of fill tubeprior to removing dipstick.This will aid in preventing dirtor foreign matter from enter-ing the transmission andcausing damage.

NOTE

Vehicle is parked (WP 0053)

on a flat, level surface.

Engine is at idle.

Transmission is at normaloperating temperature,160-200F (71-93C).

10 After Transmission

1. With engine running, checktransmission fluid level ondipstick:

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ItemNo. Interval

Item to



TRANSMISSION

DIPSTICK

Figure 3.

NOTE

Fluid level should be betweenHOT FULL and HOT ADDmarks.

2. Add OE/HDO (WP 0131,Table 2) as required.

Overfull.Notify field

level main-tenance.

11 After SpareTire/Wheel

1. Check spare tire for cuts,gouges, cracks, or scratches.Remove any sharp objects.

Tire hascuts, goug-es, orcracks thatcould resultin tire fail-ure. Tire is

missing or

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ItemNo. Interval

Item to



unservicea-ble.

2. Check wheel for broken,cracked, and bent surfaces.

Wheel isbroken,

cracked, orbent.

3. Check lugnuts and wheel studsfor obvious looseness anddamage.

Two ormore lug-nuts orstuds aremissing,broken, orbent.

12 After Exteriorof Cab

1. Visually inspect cab andcomponents for damage.

Any compo-nent is dam-aged thatwould im-pair vehiclemission.

NOTE

Operation of vehicle with bro-ken/missing mirrors may vio-late AR 385-55. (WP 0141)

13 After Mirrors Check condition of mirrors.

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ItemNo. Interval

Item to



MIRRORS

Figure 4.

NOTEOperation of vehicle withdamaged or missing wind-shield may violate AR 385-55.(WP 0141)

14 After Windshield andWiperArms/Blades

1. Check windshield glass forpresence and condition.

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ItemNo. Interval

Item to



WINDSHIELD

WINDSHIELD WIPER

ARMS/BLADES

Figure 5.

NOTE

Operation of vehicle withdamaged wiper arms/bladesmay violate AR 385-55.(WP 0141)

2. Check condition of wiper armsand blades.

15 After FanSwitch

Check fan control switch for properoperation (WP 0033) in LO and HI

positions.

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ItemNo. Interval

Item to



FAN

SWITCH

JACOBS

CAUTION

ENGINEBRAKE

Figure 6.

NOTE

Operation of vehicle with mal-functioning windshield wipermay violate AR 385-55.(WP 0141)

16 After` Wiper/ Washer

Control

1. Check wiper function of wiper/washer control for proper

operation. (WP 0032)

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ItemNo. Interval

Item to



JACOBS

CAUTION

ENGINEBRAKE

TRAILE

R

AIRSU

PPLY

NOTF

ORPAR

KING

MIDLAN

D

PU

LL

TOEXHA

UST

PUS

HT

O

WIPER/WASHER

CONTROL

Figure 7.

2. Check washer function of wiper/washer control for properoperation. (WP 0032)

NOTE

Operation of vehicle with mal-functioning horn may violateAR AR 385-55. (WP 0141)

17 After Horns Check both horns (air and electric) forproper operation.

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ItemNo. Interval

Item to



NOTE

Light checks will requireassistance.

Operation of vehicle withmalfunctioning turn signalcontrol may violate AR385-55. (WP 0141)

18 After TurnSignalControlAndIndicators

1. Check turn signal control forproper operation. (WP 0018)

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ItemNo. Interval

Item to



AIR BRAKE

EXEXEX

ENGINE

OFF

ON

START

TRAILER

AIR SUPPLY

PARKING

BRAKE

EXEXEX

EXEX EXEX

LEFT TURN

SIGNAL INDICATOR

RIGHT TURN

SIGNAL INDICATOR

TURN SIGNAL

CONTROL

Figure 8.

2. Check turn signal indicators forproper operation. (WP 0020)

NOTE


Operation of vehicle withmalfunctioningemergency flasher

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ItemNo. Interval

Item to



control may violate AR385-55. (WP 0141)

19 After Emergency

FlasherControl

Check emergency flasher control forproper operation. (WP 0018)

EMERGENCY

FLASHER CONTROL

JACOBS

CAUTION

ENGINE BRAKE

TRAILER

AIRSUP

PLY

NOTFO

RPARK

ING

MIDLAN

D

PU

LL

TOEXHA

US

T

PUS

HT

O

Figure 9.

NOTE


Operation of vehicle withmalfunctioning service

lights may violate AR385-55. (WP 0141)

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ItemNo. Interval

Item to



20 After Lights Check headlights, clearance lights,turn signals, and brake lights forproper operation.

NOTEOperation of vehicle with mal-functioning beacon light mayviolate AR 385-55.(WP 0141)

21 After PortableBeaconLight (Ifequipped)

Remove beacon light from glove boxand check for proper operation.(WP 0071)

WARNING

Keep hands clear of heavy-

duty winch cable. Failure tocomply may result in injury ordeath to personnel.

WARNING

Always wear protectivegloves when handling

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ItemNo. Interval

Item to



winch cable. Never letcable run through hands.Frayed cables can cutseverely. Failure tocomply may result in

injury or death topersonnel.


NOTEComplete this PMCS proce-dure only if heavy-duty winchwas used during mission.

22 After Heavy-DutyWinch (ifused)

1. Check for evidence of bent orcrushed hydraulic hoses orleakage at any threaded couplingor quick disconnect.

Class IIIleakpresent.Lines or fit-tings are

damaged.

NOTE

This procedure is a two sol-dier task.

2. Unwind heavy-duty winch cable(WP 0039) and check cable ofwinch for kinks, frays, or breaks.

Evidence ofkinks, frays,or breaks.

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ItemNo. Interval

Item to



HEAVY-DUTY

WINCH

CABLE

Figure 10.

NOTE


3. Clean and lubricate heavy-duty

winch cable with OE/HDO.(WP 0131)

NOTE

Complete drain and refillof heavy-duty winch drumgearbox after first 10hours of heavy-dutywinch operation.

After initial 10 hour drainand refill this procedure

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becomes an annualrequirement.

4. Drain and refill heavy-dutyrecovery winch gearboxes (both

motor end and gear end) withlubricant appropriate to operatingenvironment (refer to lubricationinstructions for moreinformation). (WP 0131)

DRAIN

FILL

BREATHER

Figure 11.

END OF WORK PACKAGE

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OPERATOR MAINTENANCEWEEKLY - PREVENTIVE MAINTENANCE

INITIAL SETUP:


Table 1. PMCS - WEEKLY

ItemNo. Interval



WARNING


WARNING


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Table 1. PMCS - WEEKLY - Continued

ItemNo. Interval

Item to



NOTE

Perform Operator's Before,After, and Weekly PMCSchecks if:

You are the assigneddriver but have notoperated the vehiclesince the last weeklyinspection.

You are operating thevehicle for the first time.

NOTE

Lubrication intervals arefor normal operatingconditions. Intervals maybe shortened as requiredfor severe operatingconditions.



Always refer to lubricationinstructions (WP 0131) toensure equipment hascorrect lubricants

appropriate to operatingenvironment (expectedcontinuous

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ItemNo. Interval

Item to



temperatures). If not,remove/drain andreapply/refill equipmentwith appropriatelubricants for operating

environment asprescribed in lubricationinstructions. (WP 0131)

WARNING

Do not operate a vehicle witha tire in an over-inflated or un-der-inflated condition, or witha questionable defect. Failureto comply may result in injuryor death to personnel anddamage to equipment.

1 Weekly DriverSide

Tires

Check tires for correct air pressure.

2 Weekly PropellerShaftsand U-Joints

1. Check propeller shafts and U-joints for excessive movement,obvious damage, and loose,missing or broken nuts andscrews.

Propellershaft or U-Joint hasexcessivemovement,obviousdamage, orone or more

nuts orscrews areloose, miss-

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ItemNo. Interval

Item to



ing, or dam-aged.

PROPELLER

SHAFTS

Figure 1.

NOTE

When vehicle is operatingunder severe conditions,lubricate propeller shaftsand universal joints every50 hours of vehicleoperation.

Complete Step 2 only ifvehicle is operating undersevere conditions.

2. Lubricate all propeller shafts,transmission to transfer case

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ItemNo. Interval

Item to



propeller shaft, and U-joints withGAA (WP 0131) as required(refer to operator's semiannualPMCS table (item no. 2) forprocedures. (WP 0129)

3 Weekly AxleBreathers

Check four axle breathers fordamage and free movement of ventcaps on breather body.

Any axlebreathercaps aredamaged orvent capsdo not movefreely onbreatherbody.

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ItemNo. Interval

Item to



FRONT OF

VEHICLEAXLE

BREATHER

VENT

CAP

BREATHER

BODY

Figure 2.

4 Weekly DriveBelts,Fan, andPulleys

1. Check drive belts for cracking,fraying, and breaks. Check fortightness. Play should be about1/2 in. (13 mm).

Any drivebelt is bro-ken,cracked tothe belt fi-

ber, hasmore thanone crack

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ItemNo. Interval

Item to



(1/8 in. indepth or50% of beltthickness),has frays

more than 2in. long orexcessiveplay.

DRIVE BELT

PULLEY

FAN

DRIVE

BELT

MEASURE

AT CENTER

DRIVE

BELT

Figure 3.

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ItemNo. Interval

Item to



2. Check condition of fan for brokenor cracked blades.

Fan dam-aged or un-serviceable.

3. Check for bent or damagedpulley. Pulley dam-aged or un-serviceable.

NOTE

Operation of vehicle with anyexhaust leaks may violate AR385-55. (WP 0141)

5 Weekly ExhaustSystem

Check exhaust pipe, muffler,heatshield, tailpipe, raincap, clamps,and mounting for obvious damage,looseness, exhaust leak, and carbonbuildup.

Exhaustpipe be-tween tur-bochargerand exhaustmanifoldleaks. Anyexhaustpipe miss-ing or dam-aged.

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ItemNo. Interval

Item to



Figure 4.

6 Weekly Air Intake

System/EtherStartingAid

1. Squeeze air cleaner dust cap to

remove excess dirt from canister.

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ItemNo. Interval

Item to



AIR INTAKE

WEATHER CAP

AIR CLEANER

CANISTER

CLAMP

TUBE

CLAMP

CLAMP

TUBE

ETHER

STARTING

AID

AIR

CLEANER

DUST CAP

Figure 5.

2. Check that air intake weather capis secure on air cleaner canister.

NOTE

Ether starting aid cartridgeswill be removed and solenoid

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ItemNo. Interval

Item to



valve will be capped in tropi-cal environment.

3. Check ether starting aid fordamage and missing hardware.

4. Check air intake system for looseor damaged clamps and damageto tube.

Air intakesystem hasmissing orinoperableclamps, ordamage totube.

7 Weekly Fuel

Tank

Check fuel tank, fuel hoses, fuel tank

connections, and fuel tank sockethead pipe plug for leaks and/ordamage.

Any fuel

leak.

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ItemNo. Interval

Item to



FUEL LINES

CONNECTIONS

STRAPS

FUEL TANK

CONNECTIONS

PIPE PLUG

Figure 6.

8 Weekly FuelTankStrainer

Check fuel tank strainer for clogs ordamage. If strainer is clogged, cleanstrainer.

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ItemNo. Interval

Item to



FUEL TANK

STRAINER

Figure 7.

9 Weekly HydraulicPump

Check hydraulic pumps for loosescrews, leaks, and damage. Checkfor loose hose fittings.

Class IIIleak presentor anymountingscrew isloose ormissing.

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ItemNo. Interval

Item to



HYDRAULIC PUMP

Figure 8.

10 Weekly HydraulicHoses

Check all hydraulic hose routing forobvious damage to hydraulic hoses,chaffing, and leaks.

Class IIIleakpresent.Chaffing orobviousdamage tohydraulichosepresent.

NOTE

Clean and re-lubricate fifthwheel parts more often whenvehicle is operated in sandyor dusty conditions. Lubricatedaily under severe operatingconditions.

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ItemNo. Interval

Item to



11 Weekly FifthWheelLubrication

1. Clean fifth wheel plate and coatlightly (completely cover) withGAA. (WP 0131, Table 8)

FIFTH WHEEL

APPROACH RAMPS

FIFTH WHEEL

PLATEJAW LUBE

POINT

Figure 9.

2. Clean fifth wheel approachramps and coat lightly(completely cover) with GAA.(WP 0131, Table 8)

3. Clean fifth wheel jaws and coatwith GAA. (WP 0131)

12 Weekly Stowage

Boxes

1. Check all stowage boxes/

compartments for missing

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ItemNo. Interval

Item to



hardware and other obviousdamage.

2. Check inside all stowage boxes/compartments for torn or

damaged seals, water in bottomof stowage box/compartment, orother obvious damage.

13 Weekly RearSpring/ParkingBrakeChambers

Check rear spring/parking brakechambers to ensure dust covers arein place and secure.

14 Weekly TowingShackles

Check towing shackles forserviceability.

15 Weekly PintleHook

1. Check pintle hook for loosenessand damaged lockingmechanism of locking pin.

Pintle hookloose orlockingmechanismdamaged/unservicea-

ble.

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ItemNo. Interval

Item to



PINTLE

HOOK

Figure 10.

2. Clean pintle hook and coat withGAA. (WP 0131, Table 8)

16 Weekly RearLiftingShackles

Check rear lifting shackles forserviceability.

17 Weekly Inter-vehicleConnecto

r

Check inter-vehicle connector sealand cable for damage.

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ItemNo. Interval

Item to



INTER-VEHICLE

ELECTRICAL

CONNECTOR

Figure 11.

WARNING

Do not operate a vehicle witha tire in an over-inflated or un-

der-inflated condition, or witha questionable defect. Failureto comply may result in injuryor death to personnel anddamage to equipment.

NOTE

Inspection of passenger sidetires includes spare tire.

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ItemNo. Interval

Item to



18 Weekly Passenger SideTires

Check tires for correct air pressure.

NOTEOperation of vehicle withdamaged/malfunctioning aircompressor may violate AR385-55. (WP 0141)

19 Weekly AirCompressor

Check air compressor for loosescrews, damaged mounting flangeand air hoses, and loose fittings/connections.

Screwsmissing,mountingflange bro-ken, air ho-ses dam-aged or fit-tings/con-nectionsloose.

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ItemNo. Interval

Item to



AIR

COMPRESSOR

Figure 12.

20 Weekly Secondary FuelFilter

Check secondary fuel filter for leaksor damage.

Any fuelleak.

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ItemNo. Interval

Item to



SECONDARY FUELFILTER

Figure 13.

21 Weekly Turbocha

rger OilLine

Check turbocharger oil line and

fittings from rear of engine for signsof leaks and damage.

Any Class

III leakpresent.

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ItemNo. Interval

Item to



Figure 14.

WARNING

Wear proper eye and skinprotection when workingaround batteries. Do notsmoke, have open flames, or

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ItemNo. Interval

Item to



make sparks around batter-ies, especially if caps are off.Batteries can explode. Failureto comply may result in injuryor death to personnel.

WARNING

Remove all jewelry such asrings, ID tags, bracelets, etc.prior to working on or around

vehicle. Jewelry and tools cancatch on equipment, contactpositive electrical circuits, andcause a direct short, severeburns, or electrical shock.Failure to comply may resultin injury or death to personnel.

22 Weekly Batteries 1. Check battery box for damage. Cracks orholes in bat-

tery box.

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ItemNo. Interval

Item to



BATTERY

BOX

Figure 15.

2. Check battery cables for

presence, frays, splits, andlooseness.

Battery ca-

bles miss-ing, frayed,split, orloose.

3. Check for loose, missing, ordamaged batteries and corrodedor burnt battery terminals.

One ormore batter-ies missing,cracked, orunservicea-

ble. Anybattery ter-minal corro-ded orburnt. Anyhold downnot secure.

23 Weekly SpareTire Davit

AndCarrier

Check spare tire davit and carrier fordamage, missing parts.

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ItemNo. Interval

Item to



PULLEY

CABLEREEL

TIRE DAVIT

PIVOT POINT

RATCHET

Figure 16.

24 Weekly Spare

TireRetainer

Check spare tire retainer correctly

seated and locking handle tight.

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ItemNo. Interval

Item to



SPARE TIRE

RETAINERLOCKING

HANDLE

Figure 17.

25 Weekly Air Dryer Check air dryer for loose screws andconnections.

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ItemNo. Interval

Item to



AIR

DRYER

Figure 18.

NOTE

Pressurize air system prior toperforming this check.

26 Weekly Air LinesandHoses

Check routing, for obvious damage toair lines and hoses. Check for leaks.

Any leaks ordamage toair lines, ho-

ses, or fit-

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ItemNo. Interval

Item to



tings arefound.

NOTE

Operation of vehicle withdamaged doors or windowsmay violate AR 385-55.(WP 0141)

27 Weekly Doors,Handles,andWindows

Check condition and operation ofdoor, handles, and windows.(WP 0017)

NOTE

Start Engine. (WP 0041) En-gine must be running for re-maining PMCS checks.

28 Weekly CabTemperatureControls

1. Check cab temperature controlsfor proper for proper operation:(WP 0033)

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ItemNo. Interval

Item to



JACOBS

CAUTION

ENGINEBRAKE

HEAT

CONTROL

FAN

CONTROL

DEFROST

CONTROL

AIR

CONTROL

Figure 19.

a. Check AIR control.

b. Check HEAT control.

c. Check DEFROST control.

d. Check FAN control.

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ItemNo. Interval

Item to



29 Weekly Heavy-DutyWinch

1. Check for evidence of bent orcrushed hydraulic hoses orleakage at any threaded couplingor quick disconnect.

Class IIIleakpresent.Hoses or fit-

tings aredamaged.

2. Check cable hold down forobvious damage.

CABLE

HOLD DOWN

Figure 20.

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ItemNo. Interval

Item to



WARNING


WARNING

Always wear protectivegloves when handling winchcable. Never let cable runthrough hands. Frayed cablescan cut severely. Failure tocomply may result in injury ordeath to personnel.

NOTE


3. Pay out heavy-duty winch cable(WP 0039) and check cable forkinks, frays, or breaks.

Evidence ofkinks, frays,or breaks.

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ItemNo. Interval

Item to



HEAVY-DUTY

WINCH

CABLE

Figure 21.

4. Check heavy-duty winch manualcontrol lever for proper operation(WP 0037) in both directions.

Controlsmalfunction,bind, or donot re-spond.

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ItemNo. Interval

Item to



WINCH CONTROL

LEVER

Figure 22.

5. Check heavy-duty winch remotecontrol and cable for properoperation (WP 0039) obviousdamage, missing parts, binding,and excessive looseness.

Controlsmalfunction,bind, or donot re-spond.

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ItemNo. Interval

Item to



CABLE

HEAVY-DUTY WINCH

REMOTE CONTROL

Figure 23.

NOTE


6. Clean and lubricate heavy-dutywinch cable with OE/HDO.(WP 0131)

END OF WORK PACKAGE

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OPERATOR MAINTENANCESEMIANNUAL - PREVENTIVE MAINTENANCE

INITIAL SETUP:


Table 1. PMCS- SEMIANNUAL

ItemNo. Interval



WARNING


WARNING


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Table 1. PMCS- SEMIANNUAL - Continued

ItemNo. Interval

Item to



NOTE

Lubrication intervals arefor normal operatingconditions. Intervals may

be shortened as requiredfor severe operatingconditions.



Always refer to lubricationinstructions (WP 0131) toensure equipment hascorrect lubricantsappropriate to operatingenvironment (expected

continuoustemperatures). If not,remove/drain andreapply/refill equipmentwith appropriatelubricants for operatingenvironment asprescribed in lubricationinstructions. (WP 0131)

1 Semian

nual

Brake

System

Lubricate axles No. 1, No. 2, No. 3,

and No. 4 brake camshafts and slack

Fitting will

not purgeold lubricant

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ItemNo. Interval

Item to



adjusters (four fittings per axle) withGAA. (WP 0131, Table 8)

out of com-ponent.

SLACK ADJUSTER

LUBE FITTINGBRAKE CAMSHAFT

LUBE FITTING

Figure 1.

NOTE

When vehicle is operatingunder severe conditions,lubricate propeller shafts

and universal joints every50 hours of vehicleoperation.

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ItemNo. Interval

Item to



Use the proper lubricantto purge all four bearingseals of each universal

joint. This flushesabrasive contaminants

from each bearing andassures all four bearingsare filled properly. Popthe seals, these seals aremade to be popped.

If any seals fail to purge,move propeller shaft fromside-to-side whileapplying gun pressure.This allows greaterclearance on thrust end ofbearing that is notpurging. If seals still donot purge, rock vehicle byreleasing the parkingbrake, start engine, puttransmission in D (drive)or R (reverse), and allowvehicle to roll. Thisremoves the windup in

the drive line and allowsfor a greater clearance onthe thrust end of theuniversal joint.

Because of the design ofthe universal joint seal,there will occasionally beone or more bearingseals of a joint that may

not purge. If this occurs,notify field levelmaintenance.

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Universal joint may haveone or two grease fittings.If there are two greasefittings, either fitting canbe greased. It is not

necessary to grease bothfittings.

2 Semiannual

PropellerShaftsand U-Joints

1. Lubricate all axle propellershafts, transmission to transfercase propeller shaft, and U-jointswith GAA: (WP 0131, Table 8)

Fitting willnot purgeold lubricantout of com-ponent.

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TRANSMISSION/TRANSFER

CASE PROPELLER SHAFT

AND U-JOINTS

SLEEVE YOKE SEAL

U-JOINT

CROSS

FITTING

U-JOINT

CROSS

FITTING

SPLINE

FITTING

SPLINE

FITTING

TYPICAL PROPELLER SHAFT

NO. 1 AXLE PROPELLER

SHAFT AND U-JOINTS


SHAFT AND U-JOINTS


SHAFT AND U-JOINTS


SHAFT AND U-JOINTS

Figure 2.

a. Complete the following whenlubricating the spline end ofthe propeller shafts:


(1) Apply GAA (WP 0131,Table 8) to spline fitting

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until lubricant appears atpressure relief hole.

(2) Cover pressure reliefhole with finger and

continue adding greaseuntil it appears at sleeveyoke seal.

3 Semiannual

SteeringSystem

1. Lubricate intergear link withGAA. (WP 0131, Table 8)


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Figure 3.

2. Lubricate No. 1 axle drag link with Fitting will

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