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 TM 55-1905-219-14-11
5-87. HYDRAULIC PUMP - MAINTENANCE INSTRUCTIONS (Continued).,
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL-CLEANING-INSPECTION
2.
WARNNG
Wear protective eye goggles when using compressed air.
All parts must be thoroughly cleaned and kept clean
during inspection and assembly. The close tolerance
of the parts makes this requirement more stringent
than usual. Clean all removed parts, using a
commercial solvent that is compatible with the
system fluid. Compressed air may be used for
cleaning, but it must be filtered to remove water and
contamination. Clean compressed air is particularly
useful in cleaning spools, orifices, and cover
passages.
1. Discard the used shaft seal (18) and all
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 rotor
(12) for scoring and excessive wear.
Remove 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 the slots are
worn.
5-1134
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