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 823 of 1207
TM 9-2320-361-20
12-23. FUEL TANK MANHOLE COVER MAINTENANCE (M49A2C)
This task covers:
a. Removal
d. Assembly
b. Disassembly
e. Installation
c. Inspection
INITIAL SETUP:
APPLICABLE MODELS
M49A2C
MATERIALS/PARTS
Two gaskets
Fill gasket
REFERENCES (TM)
TM 9-2320-361-10
TM 9-2320-361-20P
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-361-10).
Fuel tanks drained (TM 9-2320-361-10).
GENERAL SAFETY INSTRUCTIONS
Keep fire extinguisher nearby when working on fuel
tank trucks.
WARNIN G
Do not perform this procedure while smoking or within 50 feet of
sparks or open flame. Fuel is flammable and can explode easily,
causing injury or death to personnel and damage to equipment.
NOTE
Cover manhole opening in tank to avoid contamination.
1. Remove nut (12), washer (13), screw (14), and clamp ring (10) from manhole cover (15) and tank
body (11).
2. Remove manhole cover (15) and gasket (9) from tank body (11). Discard gasket (9).
b. Disassembly
1. Remove nut (18), springwell (17), spring (16), and screw (8) from fill cover (6) and latch (7).
2. Unscrew vent valve (1), and remove washer (2), gasket (3), fill retainer (4), fill gasket (5), and fill
cover (6). Discard fill gasket (5) and gasket (3).
1. Inspect manhole cover (15), spring (16), and clamp ring (10) for cracks, bends, and damage. Replace
manhole cover (15), spring (16), or clamp ring (10) if cracked, bent, or damaged.
2. Inspect vent valve (1) for stripped threads. Replace vent valve (1) if threads are stripped or
damaged.
1. Install new fill gasket (5), fill retainer (4), new gasket (3), washer (2), and vent valve (1) on fill
cover (6).
2. Install screw (8), spring (16), springwell (17), and nut (18) on fill cover (6) and latch (7).
12-40
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