TM 10-4320-307-24
3-26
WATER PUMP ASSEMBLY REPAIR (CONT ).
11.
Install a clean grease fitting into housing (5). Install grease into housing through fitting until you can see grease
through the outer bearing (3).
12.
Remove grease fitting from housing. Install pipe plugs (9 and 10).
13.
Apply a light coat of adhesive sealant to bore in drive pulley (11). Push water pump shaft into bore until pulley is
against larger diameter (shoulder) of shaft.
14.
Apply a light coat of adhesive sealant to bore in impeller (12). Support pulley end of shaft. Push impeller onto
shaft. Clearance between vanes of cast iron impeller (12) and housing must be 0.020 to 0.040 Inch. Clearance for
phenolic impeller must be 0.030 to 0.050 inch.
15.
Install water pump in accordance with paragraph 2-50.
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