TM-9-2320-386-24-1-1
2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; EXTENDED SERVICE PROGRAM (ESP); UNIT, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL; VOLUME 1 OF 2
MAY 2001
TM-9-2320-386-24-1-1 - Page 347 of 1078
0081 00-2
TM 9-2320-386-24-1-1
0081 00
WATER PUMP DRIVEBELT MAINTENANCE (Contd)
REMOVAL
1.
Loosen screws (5) and (11) and rotate tensioner plate (14) counterclockwise to relieve tension from
drivebelt (6).
NOTE
Crankshaft pulley is located behind vibration dampener.
2.
Remove drivebelt (6) from tensioner pulley (8), water pump pulley (1), and crankshaft pulley (3).
3.
Remove screws (5) and (11), washers (4) and (12), and tensioner plate (14) from engine (13).
4.
Remove snapring (7), tensioner pulley (8), and bearing (9) from shaft (10).
INSPECTION
1.
Inspect drivebelt (6) for frays, cracks, or excessive wear. Replace drivebelt (6) if damaged.
2.
Inspect bearing (9) for wear or damage. Replace bearing (9) if worn or damaged.
INSTALLATION
1.
Install bearing (9) and tensioner pulley (8) on shaft (10) with snapring (7).
2.
Install tensioner plate (14) on engine (13) with washers (12) and (4) and screws (11) and (5). Finger-
tighten screws (5) and (11).
3.
Install drivebelt (6) on tensioner pulley (8), water pump pulley (1), and crankshaft pulley (3).
4.
Insert breaker bar in square slot (2) of tensioner plate (14), and rotate tensioner plate (14)
clockwise to set drivebelt (6) to proper tension.
5.
Tighten screws (5) and (11).
ADJUSTMENT
1.
Place thumb and forefinger around drivebelt (6), and rotate drivebelt (6) 90 degrees.
2.
If drivebelt (6) rotates 90 degrees, tension is correct.
3.
If drivebelt (6) rotates less than 90 degrees, tension is too tight. Go to step 5.
4.
If drivebelt (6) rotates more than 90 degrees, tension is too loose. Go to step 5.
5.
Loosen screws (5) and (11).
6.
Insert breaker bar in square slot (2) of tensioner plate (14), and rotate tensioner plate (14)
clockwise to increase tension, or counterclockwise to decrease tension on drivebelt (6).
7.
Tighten screws (5) and (11).
8.
Install fan drivebelt (WP 0084 00).
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