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Page Title: Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for the M878A2 Yard Tractor cont'd
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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. Check electrical harnesses for burnt or a. Wiring is burnt, frayed, split or
44
Annual
Engine
frayed wires, corrosion, loose or broken
missing.
Electrical
connections. If connections are loose,
Components
tighten. If corrosion is present, clean.
b. Inspect, clean, and tighten cylinder head
grounding stud located at left rear of
engine. Coat with petrolatum (Item 48, WP
CYLINDER HEAD
GROUNDING STUD
a. Check operation of capacitor start relay in
45
Annual
Starting Aid
battery box by first placing battery discon-
Relay and
nect switch in ON position, then turning
Capacitor
ignition switch to ON and OFF position. A
clicking sound should be heard from relay
each time ignition switch is turned ON. If
no sound is present, perform troubleshoot-
b. Using a multimeter, check charge condi-
tion of capacitor. Voltage should be 24Vdc
or greater. If voltage is not correct, perform
troubleshooting (WP 0005 00).
46
Annual
Aftercooler
Perform visual inspection of aftercooler
Core
(Group 020 Commercial Service Manuals).
0009 00-24

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