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 TM 55-1905-219-14-6
3-137.8. PRESSURE REDUCING VALVE - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
CLEANING
2.
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
3.
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
4.
Sleeve
Inspect for scoring or
(25),
wear. Minor scratches
valve
can be removed with
(26),
crocus cloth.
and
plunger
(7)
5.
Body
Inspect body and cover
(28),
bore for scoring and wear.
And
If excessive wear or
cover
scoring is evident on
(14)
valve body or cover,
bore is most likely
damaged.
3-2282
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