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 TM 55-1905-220-14-6
3-137.7. RELIEF VALVE - MAINTENANCE INSTRUCTIONS (Continued).
TM 55-1905-220-14-6
LOCATION
ITEM
ACTION
REMARKS
CLEANING
3.
All parts must be thoroughly cleaned and kept clean during
inspection and assembly. Contamination in the unit will
cause excessive wear, leakage and decreased service life.
Clean in accordance with standard procedures for hydraulic
parts. Do not use compressed air to dry parts unless the
air is completely filtered in order to remove water and
INSPECTION
4.
General
a. Internal
Check that they are
passages
clean and unobstructed.
b. Mating
Inspect for nicks and
surfaces
burrs.
c. Threaded
Inspect for wear.
parts
and
holes
5.
Inspect for scoring or wear.
(17 and
Minor scratches can be removed
24)
with crocus cloth.
6.
Body
Inspect the body bore for scoring
(27)
and wear. If excessive wear or
scoring is evident on the pistons,
the body bore is most likely damaged.
3-2240
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