TM 9-2320-269-20-2
ELEVATION HYDRAULIC CYLINDER - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
ADJUSTMENT
19.
Elevation
Plug (2)
a. With derrick leg (3) in its rest,
cylinder (1)
engine off, and using 114-
inch key, unscrew and take off.
b. Install 5000 psi pressure gage in
plug hole.
20.
Vehicle
Derrick leg (3)
a. Start engine (TM 9-2320-269-10).
b. Position leg (3) to rear of vehicle
and extend leg as far as possible.
c. Maneuver truck until turret winch line
is directly above dead man anchor.
d. Attach turret winch line to anchor
(TM 9-2320-269-10).
21.
All outriggers
Lower (TM 9-2320-269-10).
NOTE
Turning setscrew clockwise will decrease pressure. Turning counterclockwise will
increase pressure.
22.
Elevation
Jamnut (4)
a. Using 9/16-inch wrench and 3/16-
cylinder (1)
and setscrew (5)
inch key, tighten screw (5) until leg leg
(3) starts to drift.
b. When leg (3) starts to drift, loosen screw
(5) until drifting stops.
c. While holding screw (5) with 3/16-inch
key, tighten nut (4) with 9/16-inch
wrench.
d. With truck still idling, slowly wind in turret
winch line (TM 9-2320-269-10), and
watch gage pressure at which leg (3)
starts to drift.
e. If the pressure gage reading is below
2800 psi (19306 kPa), repeat steps b.
and c. turning screw (5) 1/8-turn at a
time until pressure is 2800 psi (19306
kPa) and leg (3) does not drift.
2-1090
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