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 TM 55-1905-220-14-11
5-103. HYDRAULIC CUB PUMP UNIT - PUMP - MAINTENANCE INSTRUCTIONS
(Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL-CLEANING-INSPECTION (Cont)
1. Discard the used shaft seal
(18) and all the preformed
packings (5 and 9). Wash
the metal parts in a solvent,
blow them dry with filtered,
compressed air, and place
them on a clean surface for
inspection.
2. Check the wearing surfaces
of the body (13), pressure
plate (7), ring (8), and
the rotor (12) for scoring
and excessive wear. Remove
any light score marks by
lapping. Replace any heavily
scored, or badly worn parts.
3. Inspect the vanes (11) for
burrs, wear and excessive
play in the rotor slots.
Replace the vanes (11), and
rotor (12) if slots are worn.
4. Check the bearing (17) for
wear and looseness. Rotate
the bearings while applying
pressure to check for pitted
or cracked races.
5. Inspect the oil seal (18)
mating surface on the shaft
(15) for scoring or wear.
If marks on the shaft cannot
be removed by light polishing
replace the shaft.
5-1222
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