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 TM 55-1905-221-14-3
6-26.1.
LUBE OIL PUMP ASSEMBLY - MAINTENANCE INSTRUCTIONS
(CONTINUED).
LOCATION/ITEM
ACTION
REMARKS
INSPECTION
3.
Wear eye goggles for protection when using compressed air.
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 below.
Also, the gear bore and the
bushing bore in both the pump
body and cover must be
6-401
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