UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

TM 9-2320-312-24-1

UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

0009 00

Table 1. Unit Preventive Maintenance Checks and Services (PMCS)

for the M878A2 Yard Tractor.

LOCATION

ITEM TO

EQUIPMENT NOT

ITEM

CHECK/

READY/AVAILABLE

NO.

INTERVAL

SERVICE

PROCEDURES

IF:

WARNING

Unless otherwise specified, perform all lubrication and PMCS with tractor

on level ground, transmission in N (Neutral), parking brake applied, and

engine off. Failure to follow this warning may result in injury to personnel.

NOTE

Perform the following break-in services after initial 100 hours of operation:

a. Loosen and re-torque front axle spring assembly U-bolt nuts.

b. Loosen and re-torque front and rear axle wheels nuts.

c. Drain and refill rear axle hub wheel ends and differential.

d. Inspect engine assembly.

e. Change transmission fluid and replace fluid filters.

f. Replace hydraulic system (power steering and fifth wheel lift) oil fil-

ter.

After initial six months of operation, notify DS Maintenance to inspect/

adjust engine valve lash.

Perform Operator PMCS prior to or in conjunction with Unit PMCS if:

a. There is a delay between daily operation of the equipment and Unit

PMCS.

b. The regular operator is not assisting.

Loosen spring assembly U-bolt nuts, then re-

Initial 100

Front Axle

torque to 450 lb-ft (610 Nm).

Hours

Spring

Assembly U-

Bolt Nuts

Check torque of front and rear axle wheel

Initial 100

Front and

nuts, with wheel ends cold. Torque should be

Hours

Rear Axle

500 lb-ft (678 Nm).

Wheel Nuts

0009 00-1