TM 9-2320-272-24-2
18.
Support water pump body (2) directly on impeller end of shaft (3) on arbor press.
19.
Position drive pulley (1) and press on shaft (3) until seated.
20.
Place water pump body (2) on arbor press with pulley drive (1) face down.
21.
Apply coating of detergent to water pump seal (4) and install water pump seal (4) on shaft (3) with
stainless steel surface facing upward.
NOTE
Minimum press fit between shaft and impeller is 0.001 in.
(0.03 mm).
22.
Position water pump impeller (5) and, using mandrel driver, press on shaft (3).
1.
Apply light coat of clean GM grease to both sides of new gasket (7).
2.
Position new gasket (7) on mating surface of water pump support (8) and align to screw holes.
3.
Position water pump support (8) on engine block (6) and align to screw holes.
4.
Install water pump support (8) on engine block (6) with two new lockwashers (11) and screws (10).
Do not tighten screws (10) at this time.
5.
Install new O-ring (9) and water pump body (2) on water pump support (8).
6.
Tighten two screws (10) 30 lb-ft (41 Nm).
7.
Install support bracket (17) on water pump support (8) with six new lockwashers (18) and
screws (19). Tighten screws (19) 30 lb-ft (41 Nm).
8.
Install top of support bracket (17) to upper radiator support bracket (16) with spacer (15), washer (20),
two new lockwashers (13), screws (12), and hose clamp (14). Tighten all parts securely.
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