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TM 55-1905-220-14-6
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
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
and
wear. If excessive
cover
wear or scoring is
(14)
evident on valve body
or cover, bore is most
likely damaged.
3-2252


 


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