TM 9-2320-269-20-2
DERRICK LEG EXTENSION HYDRAULIC DRIVE LINES - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
INSTALLATION - CONTINUED
14.
Derrick operator's
Two derrick
a. Place in position.
valve (1) and
operator's valve-
b. Check tags for proper locations.
extension
to-extension cylinder
cylinder (2)
hose assemblies
(3) and (4)
90 swivel
15.
Derrick operator's
a. Take tag off hose (4).
valve-to-extension
adapter (5)
b. Screw on, and tighten using
cylinder hose
9/16-inch and 7/8-inch wrenches.
assembly (4)
90 swivel adapter
16.
Adapter (6)
Screw on, and tighten using 7/8-inch
(5) with derrick
and 1-inch wrenches.
operator's valve-to-
extension cylinder
hose assembly (4)
90 swivel
17.
Derrick operator's
Screw on, and tighten using 9/16-inch
valve-to-extension
adapter (7)
and 7/8-inch wrenches. V
cylinder hose
assembly (3)
90 swivel
18.
Adapter (8)
Screw on, and tighten using 7/8-inch
adapter (7) with
and 1-inch wrenches.
derrick operator's
valve-to-extension
cylinder hose
assembly (3).
2-990
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