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 TM 55-1905-219-14-6
3-137.7. RELIEF VALVE - MAINTENANCE INSTRUCTIONS (Continued).
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 contaminants.
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.
3-2270
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