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

  TM-9-2320-361-20 - Page 641 of 1207

TM 9-2320-361-20
8-28. AIR COMPRESSOR DRIVEBELT REPLACEMENT
This task covers:
a. Removal
c. Adjustment
b. Installation
INITIAL
SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TM 9-2320-361-10
SPECIAL TOOLS
Air compressor pulley spanner wrench
MATERIALS/PARTS
Two lockwashers
TM 9-2320-361-20P
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-361-10).
Hood raised and secured (TM 9-2320-361-10).
Alternator belts removed (para. 4-2).
Radiator removed (para. 3-42).
GENERAL SAFETY INSTRUCTIONS
Ensure fuel shutoff valve is OFF before tuning
over engine.
1. Remove twoscrews (2) and lockwashers (1) from adjustable pulley flange (4). Discard
lockwashers (1).
2. Using puller wrench and holding pulley flange (3), turn adjustable pulley flange (4)
counterclockwise to loosen drivebelt (5).
3. Remove drivebelt (5) from crankshaft pulley (7), pulley flange (3), and adustable pulley flange (4).
b. Installation
1. Place drivebelt (5) between pulley flange (3) and adjustable pulley flange (4) and on crankshaft
pulley (7).
2. Holding drivebelt (5) up, turn adjustable pulley flange (4) clockwise as far as possible by hand.
3. Turn adjustable pulley flange (4) on pulley flange (3) until there is no slack in drivebelt (5).
WARNING
1.
2.
3.
4.
8-68
Ensure fuel shutoff valve is OFF before turning over engine. Failure
to do this may result in injury to personnel.
Turn engine serveral revolutions, by turning crankshaft bolt (8), to equalize tension on both sides of
drivebelt (5).
Holding straight edge (6) along drivebelt (5), use 6-inch rule to push in center of drivebelt (5).
Correct drivebelt tension is 0.75 in. (1.905 cm) with firm finger grip on 6-inch rule.
Using pulley wrench and holding pulley flange (3), adjust drivebelt (5) tension:
a. Turn adjustable pulley flange (4) counterclockwise to loosen tension on drivebelt (5).
b. Turn adjustable pulley flange (4) clockwise to increase tension on dvebelt (5).
When drivebelt (5) tension is correct, install two new lockwashers (1) and screws (2) in adjustable
pulley flange (4).


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