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 TM 55-1905-219-14-10
5-42. LUBE OIL PUMP - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION
WARNING
Wear eye goggles for protection when using compressed air.
2.
a. Wash all parts in clean fuel oil and dry them with compressed air.
b. Examine the gear cavity in the pump body and the drive shaft bushings. If the
driven gear bushings are worn, replace the bushings. Service replacement
bushings in the driven gears must be reamed after assembly. Bushings used with
the .499 inch diameter driven gear shaft must be reamed to .500 inch .0005 inch
and bushings used with the .623 inch diameter shaft must be reamed to .625 inch
.0005 inch.
c.
Inspect the bushings in the pump body and cover. If the bushings are worn
excessively, replace the pump and cover assemblies unless suitable boring
equipment is available for finishing the new bushings. When installing new
bushings, replace all of the bushings. The bushings must be located and
positioned as shown. Also, the gear bore and the bushing bore in both the pump
body and cover must be concentric within .001 inch. The shaft- to-pump body-
bushing clearance with new parts is .0008 in h to .0025 inch. The shaft-to-pump
c
cover bushing clearance with new parts is .0010 inch to .0027 inch.
5-610
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