TM 9-2320-272-24-1
THIS TASK COVERS:
a. Removal
c. Installation
b. Cleaning and Inspection
APPLICABLE MODELS
REFERENCES (TM)
TM 9-2320-272-10
M939A2
TM 9-2320-272-24P
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit (Appendix E, Item 1)
Parking brake set (TM 9-2320-272-16).
MATERIALS/PARTS
Hood raised and secured (TM 9-2320-272-10).
O-ring (Appendix D, Item 462)
Engine coolant drained (para. 3-53).
Fan drivebelt removed (para. 3-71).
1.
Loosen alternator link screw (10) and remove long screw (8) and two short screws (2) from water
pump (3). Note locations of long and short screws.
Do not strike or pry on water pump pulley or shaft. Coolant leaks
may result.
2.
Tap edge of water pump flange (4) to release water pump (3) from engine block (1).
3.
Remove water pump (3) and O-ring (7) from engine block (1). Discard O-ring (7).
1.
Clean mating surfaces of water pump (3) and engine block (1).
2.
Inspect water pump flange (4) for cracks and nicks.
3.
Check for smooth shaft rotation.
4.
Inspect impeller blades (6) for corrosion or wear.
5.
Inspect weep hole (5) for evidence of leakage.
6.
Replace pump (3) if any parts fail inspection.
Do not pinch, cut, or crimp O-ring while performing steps 1 and 2.
Damaged O-ring may result in coolant leak.
1.
Install new O-ring (7) on water pump (3).
2.
Install water pump (3) engine block (1) with two short screws (2). Hand tighten screws (2).
3.
Align alternator link (9) with water pump flange (4) and install long screw (8). Hand tighten
screw (8).
4.
Tighten alternator link screw (10) and short and long screws (2) and (8).
3-202
