Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for the M878A2 Yard Tractor

TM 9-2320-312-24-1

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

for the M878A2 Yard Tractor - Continued.

LOCATION

EQUIPMENT NOT

ITEM TO

ITEM

READY/AVAILABLE

CHECK/

NO.

INTERVAL

PROCEDURES

IF:

SERVICE

NOTE

Initial 100

Rear Axle

Hours

Hub Wheel

Rear axle assembly refill capacity is 41 pt (19.4 l).

Ends and

Differential

While axle is still warm, drain oil from hub

wheel ends and from differential (Group 090

Commercial Service Manuals). Refill with

gear lubricating oil (Item 38, 39 or 40, WP

0165 00).

Initial 100

Engine

a. Check oil, fuel, coolant, and air lines, a. Class III oil, fuel or coolant

hoses, and fittings for leaks and secure

Hours

Assembly

leaks are evident.

mounting.

b. Check oil filter base, oil pan, and oil pan b. Class III leaks are evident.

drain plug for leaks. Tighten or replace any

damaged component.

c. Check rocker arm cover for leaks. Tighten c. Class III leaks are evident.

or replace any damaged component.

d. Check engine accessories (e.g. AC com-

pressor, etc.) mounting hardware for loose-

ness. Tighten or replace any damaged

component, if authorized.

e. Check serpentine drive belt to ensure it is e. Serpentine belt is missing,

not missing. Check for looseness, tears,

broken, glazed or torn. Belt

glazed or frayed condition or cracks.

fiber has more than one crack

Replace if damaged (WP 0012 00).

1/8 in. (3.2 mm) in depth or

50% or more is frayed more

than 2 in. (5.1 mm) long.

f. Check electrical harnesses for burnt or f. Wiring is burnt, frayed, split or

frayed wires, corrosion, loose or broken

missing.

connections. If connections are loose,

tighten. If corrosion is present, clean.

a. Inspect transmission for loose transmission a. Class III leaks are evident.

Initial 100

Transmission

mount or bolts, or evidence of transmission

Transmission mounting bolts

Hours

and Transmi-

fluid leaks.

are loose or missing.

sion Oil

Cooler Hoses

0009 00-2

Change 1