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 369 of 1207
TM 9-2320-361-20
3-31. MANIFOLD HEATER (UNCOVERED) REPLACEMENT
This task covers:
a. Fuel Nozzle Removal
f. Elbow Installation
b. Ignition Unit Removal
g. Fuel Pump Installation
c. Fuel Filter Removal
h. Fuel Filter Installation
d. Fuel Pump Removal
i.
Ignition Unit Installation
e. Elbow Removal
j.
Fuel Nozzle Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM]
All
TM 9-2320-361-10
MATERIALS/PARTS
TM 9-2320-361-20P
Manifold heater fuel filter
EQUIPMENT CONDITION
Nine lockwashers
Parking brake set (TM 9-2320-361-10).
Two gaskets
Hood raised and secured (TM 9-2320-361-10).
Two filters
Battery ground cable disconnected (para. 4-48).
a. Fuel Nozzle Removal
1. Disconnect cable assembly (38) from spark plug (32).
2. Remove spark plug (32) and gasket (31) from elbow (25). Discard gasket (31).
3. Disconnect fuel return tube (7) and fuel inlet tube (10) from adapters (30) and (28).
4. Loosen nut (26) and remove fuel nozzle (27) and nut (26) from elbow (25).
5. Remove two filters (29) from fuel nozzle (27). Discard filters (29).
b. Ignition Unit Removal
1. Remove cable assembly (38) from ignition unit (4).
2. Remove screw (1), lockwasher (2), and ground wire (41) from engine (40) and disconnect wiring
harness (39) from ignition unit (4). Discard lockwasher (2).
3. Remove two screws (3), lockwashers (5), clamps (36), and ignition unit (4) from engine (40). Discard
lockwashers (5).
c. Fuel Filter Removal
1. Disconnect wire (11) from wire (12).
2. Remove wiring harness (21) from fuel pump (14).
3. Remove fuel return line (7) from tee (9).
4. Disconnect fuel supply line (35) from fuel filter (18).
5. Remove fuel filter (18), elbow (16), and pipe coupling (15) from fuel pump (14). Discard fuel
filter (18).
d. Fuel Pump Removal
1. Remove fuel inlet tube (10) and elbow (13) from fuel pump (14).
2. Remove two screws (6), lockwashers (8), clamps (20), and fuel pump (14) from water outlet
manifold (19). Discard lockwashers (8).
3-66
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