| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-24-5
CAUTION
Water pump must be removed carefully to avoid damage to impeller.
i. Remove six mounting screws (17) from water pump (12) and remove the water pump from the engine.
j. Remove the plug (33, FIGURE 2-21, Sheet 3) from the water pump pulley.
k. Using standard puller, remove drive pulley (34, FIGURE 2-21, Sheet 3) and impeller (30) from the
shaft (39).
1. Remove the larger retaining ring (35) that holds the bearings (36, 38) and shaft (39) in the water pump
(31).
m. Support the pulley side of the housing (31). Push on the impeller (30) end of the shaft (39) to remove
the bearings (36, 38), and shaft (39) from the housing.
n. Remove the cupseat (28), grease seal (40), and gasket (29). Discard grease seal and gasket.
o. Use the bearing disassembly fixture to support the outer bearing (36). Push the shaft (34) from the
bearing (36, 38) and spacer (37).
REPAIR
a. Clean the parts with cleaning solvent and dry with compressed air.
b. Check the bearings (36, 38) for scoring. If the bearing races are damaged, be sure to check the
outside diameter of the shaft (39) and the bearing bores. Discard the bearings (36, 38) after
inspection.
c. Check the impeller (30) for cracks, nicks, and corrosion. Replace impeller (30) if damage is found.
d. Measure the bore in the impeller (30). Measure the outside diameter of the shaft (39) at the impeller
end of the shaft. There must be at least 0.001 inch (0.03 mm) press-fit between the impeller bore
and outside diameter of the shaft.
e. Check the shaft (39) to make sure it is straight. Replace shaft, if bent.
f. Check the water pump housing (31) for cracks and corrosion. Replace water pump, if required.
g. Measure the housing bore. Replace the pump if the bearing bore is larger than 2.4494 inches (62.515
mm). Make sure the weep hole in the housing is open.
h. Replace preformed packing (24, FIGURE 2-21, Sheet 3), grease seal (40), face seal and cup seat
(28), spacer (37), and V-belt (19, FIGURE 2-21, Sheet 1).
2-90
|
||
|
||
