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

EQUIPMENT NOT

ITEM TO

ITEM

READY/AVAILABLE

CHECK/

NO.

INTERVAL

PROCEDURES

IF:

SERVICE

a. Inspect fuel lines, fuel tank, and fuel sys- a. Class III fuel leaks are evident.

Semiannual

Fuel System

tem components for leaks and damage.

(Con't)

Tighten or replace any damaged compo-

nent.

b. Clean primary fuel filter/water separator

and replace element (WP 0018 00).

c. Replace secondary fuel filter (WP 0017

00).

Semiannual

Engine Air

Remove, clean or replace air compressor fil-

Compressor

ter (Group 020 Commercial Service Manu-

als).

Clean and inspect crankcase breather (Group

Semiannual

Engine

020 Commercial Service Manuals).

Crankcase

Breather

a. Check for looseness, tears, glazed or a. Serpentine belt is missing, bro-

Semiannual

Serpentine

frayed condition or cracks. Replace if dam-

ken, glazed or torn. Belt fiber

Drive Belt and

aged (WP 0012 00).

has more than one crack 1/8 in

Pulleys

(3.2 mm) in depth or 50% or

more is frayed more than 2 in

(5.1 mm) long.

b. Check alternator and air conditioning com-

pressor mounting for looseness. Inspect

brackets and attaching hardware for

cracks, bends, and loose mounting.

Replace damaged components as required.

c. Check for cracked pulleys or pulleys out of c. Cracked pulleys are noted.

alignment.

0009 00-13

Change 1