TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 1017 of 1207
TM 9-2320-361-20
14-9. ENGINE COOLANT HEATER HARNESS REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TM 9-2320-361-10
MATERIALS/PARTS
TM 9-2320-361-20P
Two lockwashers
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-361-10).
Disconnect battery ground cable (para. 4-48).
CAUTION
1.
2.
3.
4.
5.
6.
7.
8.
Use care when routing harness. Snagging may result, and forceful
pulling will cause damage to harness.
Remove screw (10), lockwasher (11), clamp (12), and ground lead (13) from right side of fuel
pump (16). Discard lockwasher (11).
Remove screw (8), lockwasher (9), clamp (7), and ground lead (13) from saddle bracket (17). Discard
lockwasher (9).
Disconnect harness (6) from heater (14).
Remove grommet (18) and pull harness (6) from battery box (15).
From under instrument panel (2), disconnect harness lead (3) from diode box wire (l).
Disconnect harness (6) from heater control box (19).
Remove grommet (4) and pull harness (6) from firewall (5).
Remove harness (6) from vehicle.
1. Insert harness (6) through firewall (5).
2. From under instrument panel (2), connect harness (6) to heater control box (19).
3. Connect harness lead (3) to diode box wire (1).
4. Insert harness (6) through battery box (15) and connect to heater (14).
5. Install ground lead (13), clamp (12), new lockwasher (11), and screw (10) on the right side of fuel
pump (16).
6. Install ground lead (13) saddle bracket (17) with clamp (7), new lockwasher (9), and screw (8).
7. Install two grommets (4) and (18) on firewall (5) and toolbox (15).
14-12
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