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TM 5-2420-222-20-3
BACKHOE CONTROL VALVE - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
DISASSEMBLY - CONTINUED
16.
Two union
Two nuts (4 and 5)
Using two 1-inch open-end wrenches, loosen.
adapters (1 and 2)
and valve
assembly (3)
17.
Valve assembly (3)
Two union adapters
a.
Note relative position for proper
(1 and 2) with
placement during assembly.
assembled parts
b.
Using 1-inch open-end wrench,
unscrew and take off.
18.
Two union adapters
Two packings
a.
Using pocket knife, take off.
(1 and 2)
(6 and 7)
b.
Get rid of.
CLEANING
NOTE
For more information on how to clean parts, go to General Maintenance Instructions
(page 2-137).
WARNING
Dry-cleaning 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.
19.
Valve assembly (3)
a.
Using clean rags dampened with dry-
cleaning solvent, wipe clean.
b.
Using clean, dry rags, wipe dry.
20.
All other metal
a.
Clean in dry-cleaning solvent.
parts
b.
Using clean, dry rags, wipe dry.
INSPECTION/REPLACEMENT
NOTE
For more information on how to inspect parts, go to General Maintenance Instructions
(page 2-137).
Replace defective parts as needed.
2-1264
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