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

TM 9-2320-312-24-1

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

for the M878A2 Yard Tractor - Continued.

LOCATION

ITEM TO

EQUIPMENT NOT

ITEM

CHECK/

READY/AVAILABLE

NO.

INTERVAL

SERVICE

PROCEDURES

IF:

Inspect/leak test AC system (WP 0057 00).

Any leaks are evident.

Semiannual

Air

Conditioning

System

Semiannual

Air System,

a. Fully charge air system (TM 9-2320-312-

10).

Brakes

b. Listen for sounds of leaks in all air lines b. Any air leaks are evident.

and at valves and fittings.

c. If air leaks are suspected, with air system

fully pressurized, apply a solution of deter-

gent (Item 23, WP 0165 00) and water to

air lines, valves, and fittings. Tighten loose

connections. Replace damaged compo-

nents as required.

Semiannual

Air Dryer

Replace air dryer desiccant cartridge (Group

150 Commercial Service Manuals).

Semiannual

Front Axle

a. Inspect spring leaves for cracks and

breaks.

Suspension

b. Inspect U-bolts, spring caps, and spring

assembly attaching hardware for loose-

ness, cracks or other damage. Tighten any

loose component.

c. Check shock absorbers for looseness or

damage. Look for worn bushings and evi-

dence of fluid leakage from shock

absorber. If one shock absorber needs

replacing replace both at the same time

(WP 0032 00).

0009 00-16