Table 2-1. Unit Level Preventive Maintenance Checks and Services (PMCS) (CONT). -726280094

TM 9-2320-364-20-1

2-9. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

TABLES (CONT).

Table 2-1. Unit Level Preventive Maintenance Checks and Services (PMCS) (CONT).

Interval

Item to Be

Procedure

Not Mission

Item

Inspected

Capable If:

No.

NOTE

Driveshaft

When using a grease gun, apply lubricant to

and Univer-

the fitting until clean lubricant squeezes out

sal Joints

of the part being lubricated.

(all axles)

Universal joint may have one or two grease

(continued)

fittings. If there are two fittings, grease

either fitting. It is not necessary to grease

both fittings.

Use the proper lubricant to purge all seals

on each universal joint. Purging flushes

abrasive contaminates from each bearing

and ensures all bearings are filled properly.

Pop the seals; these seals are made to be

popped. If any seal fails to purge, move

driveshaft from side-to-side while applying

grease gun pressure. This allows greater

clearance on thrust end of bearing that is not

purging. If seals still do not purge, rock

truck by starting engine, releasing parking

brakes, putting transmission in Drive (D) or

Reverse (R), and allowing truck to roll.

This removes the wind up in the drive line

and allows for a greater clearance on the

thrust end of the universal joint.

Because of the design of the universal joint

seal, there will occasionally be one or more

bearing seals that may not purge. Seal

tension then has to be released. The

procedure for releasing seal tension is as

follows:

(1) Loosen bolts holding bearing assembly

that does not purge to release seal

tension. It may be necessary to loosen

bearing assembly approximately 1/16

in. (1.6 mm) minimum.

(2) If loosening does not result in purging,

remove bearing assembly to determine

cause of blockage.

2-30