TM 9-2320-269-20-2
DERRICK OPERATOR'S CONTROL VALVE - TO - RETURN LINE FILTER HOSE ASSEMBLY - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REMOVAL - CONTINUED
1.
900 swivel
Control valve-to-
a. Position pail to catch hydraulic fluid.
adapter (1)
return line filter
b. Using 7/8-inch and 1-inch wrenches,
hose assembly (2)
unscrew and take off.
c.
Dispose of drained fluid.
2.
Access cover (3)
Two wing nuts (4)
Unscrew, and take off.
3.
Derrick mast (5)
Access cover (3)
Take off.
4.
900 swivel
Control valve-to-
Using 7/8-inch and 1-inch wrenches,
adapter (6)
return line filter
unscrew and take off.
hose assembly (2)
CLEANING
WARNING
Solvent burns easily. Solvent fumes can explode. Do not smoke or allow open flame
nearby when using solvent. Failure to observe these precautions could cause serious
injury or death.
NOTE
For more information on how to clean parts, go to General Maintenance Instructions
(page 2-142).
5.
All metal parts
a. Clean in drycleaning solvent.
b.
Wipe dry with clean, dry rags.
6.
Hose assembly (2)
a. Clean in clean, soapy water.
b.
Rinse in clean water.
c.
Wipe connectors clean with clean
rags dampened in drycleaning solvent.
d.
Wipe dry with clean, dry rags.
NOTE
For more information on how to inspect parts, go to General Maintenance Instructions
(page 2-142).
Replace damaged or defective parts as necessary.
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