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TM 5-2420-222-20-3
HYDRAULIC OIL FILTER RELIEF VALVE - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
CLEANING
NOTE
For more information on how to clean parts, go to General Maintenance Instructions (page 2-137).
WARNING
Drycleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and use
only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors.
Do not use near open flame or excessive heat. The flashpoint is 100°F to 138°F (38° to 59°C). If
you become dizzy while using cleaning solvent, get fresh air immediately and get medical aid. If
contact with eyes is made, wash your eyes with water and get medical aid immediately.
Compressed air used for blowing away chips, dirt, etc., must leave nozzle at less than 30 psi (207
kPa) to prevent personal injury. Be certain that nozzle is rated to provide a maximum of 30 psi
(207 kPa). Be sure to wear safety goggles or lenses when using compressed air. Compressed air
and particles moved by compressed air can cause damage to your eyes.
25.
All parts
a.
Clean in drycleaning solvent.
b.
Using reciprocating air compressor,
air compressor hose, and air blow gun,
blow dry.
INSPECTION/REPLACEMENT
NOTE
For more information on how to inspect parts, go to General Maintenance Instructions (page 2-137).
Replace defective parts which cannot be repaired.
26.
Surge relief valve
a.
Look for cracks, breaks, and abnormal
spring (1)
bends.
b.
Using 4 to 400-pound capacity spring
tester, measure free length.
Free length should be 2.0625 inches
(52.3875 mm).
2-1222
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