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 TM 55-1905-219-14-11
5-105. HYDRAULIC CUB PUMP UNIT - PUMP MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL-CLEANING-INSPECTION
2.
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-- 1212
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