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 TM 55-1905-223-24-5
REPLACEMENT
a. Install the idler pulley assembly (32, FIGURE 2-21, Sheet 3) to the water pump housing (31). Install
and tighten idler pulley locknut (14, FIGURE 2-21, Sheet 1) and washer (15).
b. Support the impeller side of the water pump housing.
c. Apply a light coat of clean lubricating oil on the shaft (39). Use the mandrel to support the new inner
bearing (38). Push the pulley end of the shaft (39) through the bearing (38) until the bearing is against
the larger diameter (shoulder) of the shaft (39).
d. Use the mandrel to support the new outer bearing (36). Install the bearing spacer (37) onto the shaft
(39). Push the shaft (39) and spacer (37) through the bearing (36) until the bearing (36) is against the
spacer (37). Make sure the bearings (36, 38) turn freely.
CAUTION
To prevent damage to the bearing, make sure the inner race of the bearing is
not overloaded from contact with the spacer.
e. Apply a thin coat of Loctite to the outside diameter of the bearings (36, 38). Install the bearings (36,
38) and shaft (39) assembly into the bore of the housing. Use the mandrel to push the bearings (36,
38) and shaft (39) assembly into the housing.
f.
Install the large retaining ring (35), with the flat side toward the bearing, into the groove in the
"housings
g. Install a clean grease fitting into the housing. Install grease into the housing, through the fitting, until
you can see the grease through the outer bearing.
NOTE
Use grease that meets the specifications of MIL-G-3545. Do not use grease that
has thickeners of sodium or soda soap.
CAUTION
Do not install too much grease. This can cause damage to the bearings.
Do not apply more than one drop of Loctite. More than one drop will cause seal
and cup seat to fasten together.
h. Install the cup seat (25) and gasket (26). Use the mandrel to install the cup seat.
i. Apply one drop of Loctite to the cup seat (28). Put the drop between the shaft (39) and cup seat (28).
2-91
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