3-76.1. WATER PUMP AND ADAPTER PLATE MAINTENANCE
This task covers:
a. Removal
c.
Installation
b. Inspection
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Materials/Parts
Water pump gasket (Appendix G, Item 52.1)
Pipe sealing compound (Appendix C, Item 44)
Sealing compound (Appendix C, Item 45)
Anaerobic gasket sealer (Appendix C, Item 39)
Manual References
TM 9-2320-280-24P
Equipment Condition
• Engine oil filler tube removed (para. 3-3).
• Water pump inlet hose removed (para. 3-72).
• Water pump pulley removed (para. 3-76).
• Thermostat bypass hose removed (para. 3-67).
• Fan drive hose disconnected (para. 3-68).
• Tensioner, idler pulleys, and mounting hardware
removed (para. 3-84).
• Power steering pump removed (para. 8-24).
NOTE
Water pump is different on M1123 and A2 series vehicles.
1.
Remove bypass nipple (13) from water crossover (12).
2.
Remove studs (1), (11), (6), and (5), four capscrews (9), washers (10), two capscrews (7), capscrew (8),
water pump (4), and adapter plate (3) from timing gear cover (2).
3.
Remove seven capscrews (15), adapter plate (3), and gasket (14) from water pump (4). Discard
gasket (14).
4.
Clean remaining gasket material and sealing compound from sealing surfaces of adapter plate (3),
water pump (4), and timing gear cover (2).
5.
Remove heater hose nipple (17), elbow (16), and bypass hose adapter (19) from water pump (4).
1.
Inspect water pump (4) for cracks, breaks, or loose impeller. Replace if cracked, broken, or impeller
is loose.
2.
Inspect adapter plate (3) for corrosion. If adapter plate (3) is excessively corroded, replace.
3.
Inspect elbow (16), heater hose nipple (17), and bypass hose adapter (19) for stripped threads and
breaks. If damaged, replace.
4.
Inspect rivet (18) for damage or looseness. Replace if damaged or loose. Apply sealing compound to
replacement rivet (18) prior to installation.
b. Inspection
a. Removal
TM 9-2320-280-20-2
3-130.2
Change 2
