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 TM 55-1905-219-14-8
4-7.10 PRESSURE REGULATOR AND OPERATING CYLINDER - MAINTENANCE
INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
REPAIR
3. Impeller
a. Impeller
Remove.
It may be nec-
and seals
nut (18)
essary to hit
handle of the
wrench with a
hammer in order
to get enough
force to break
the nut loose.
b. Impeller
Remove.
Use impeller
(19)
puller method
shown.
CAUTION
Do not drop the impeller or mar the face which fits into seals within the inner
impeller housing, as this face of the impeller forms part of the seal.
c. Seals
1. Inspect for damage
If damaged:
(20 and
or wear.
21)
a. Remove power
head (para-
graph 4-7.6).
b. Remove gear
housing and
rear impel-
ler housing
2. Remove.
Drive out with
punch and ham-
mer using care
not to cock
the seal or
damage the
housing (22).
4-252
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