GROUND HANDLING.

TM 9-2320-279-20-1

Maintenance Procedures (Cont)

NOTE

It may be necessary to remove valve rocker cover and loosen fuel

pipe nut to bleed trapped air from fuel system. Be sure fuel pipe nut

is retightened securely before replacing rocker cover.

(f) To restart engine, fuel lines must be rid of air to provide adequate fuel for injectors.

Remove pipe plug (5) at fuel filter (1). Connect priming pump, NSN 4910-00-402-9623, at

pipe plug outlet and prime fuel system. After priming, remove pump and install pipe plug.

(g) Start engine. Check filter (1 and 4) for leaks.

2-19. GROUND HANDLING.

a. Towing. Two towing eyes are located at front and two located at rear of vehicle. Each towing eye is

designed to withstand a 60,000 lb (27 240 kg) pull at directions up to 450.

b. Parking. Parking brakes are designed to hold vehicle GVW on a minimum of 20% grade, pointing

either uphill or downhill per Federal Motor Carrier Safety Regulation 393.41.

c. Moving Instructions. For forward, aft, lateral, and upward movements, vehicle has four tiedown

rings and uses the pintle assembly. Refer to TM 9--2320--279--10 for mooring condition and tiedown

locations.

d. Hoisting. Slinging assemblies and towing eyes used for hoisting vehicle have lift capacity of 108,000

lb (49 032 kg).

2-20. INSPECTION OF COMPONENTS.

a. Examine bearings for rusted or pitted balls, races, or separator. Examine balls and races for

abrasion, and serious discoloration. The following are conditions for bearing rejection.

NOTE

Nicks or gouges outside race load areas are not cause for rejection

unless deep enough to cause bearing binding or misalinement.

(1)

Cuts or grooves parallel to ball or roller rotation.

(2)

Fatigue pits (as opposed to minor machine marks or scratches).

b. Clean all parts before inspection. Check for defects such as physical distortion, wear, cracks, and

pitting.

c. When removing drain plugs from axle differential and planetary hubs, check amount of sediment on

plugs. Accumulations of grit or fine metal particles may indicate actual or potential component failure. A

few fine particles are normal. This inspection helps to determine if there are defective parts prior to

internal inspection of the component, and to predict degradation of the equipment.

d. Check all hose surfaces for broken or frayed fabric, breaks caused by sharp kinks, or chafing against

other parts of the unit. Inspect metal tubing lines for kinks. Inspect fitting threads for damage. Replace

any defective part. Check for leaks after assembly and during initial operation period.

e. Visually inspect all castings and weldments for cracks.

f. Inspect all harnesses for chafed or burned insulation. Inspect all terminal connectors for loose

connections and broken parts.

Change 6

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