TM 9-2320-269-10
DERRICK HYDRAULIC CONTROLS-OPERATOR'S CONSOLE - CONTINUED
Key
Control or Indicator
Function/Use
2
DERRICK ELEVATION
Allows you to raise or lower the derrick leg. The derrick leg is able to
go up
CONTROL LEVER
to an 800 angle, or lower the baskets to the ground. An indicator plate
on the side of the derrick leg tells angle of the derrick. Releasing the
lever causes it to automatically return to the neutral position.
3
DERRICK ROTATION
Holding this control down causes the derrick to rotate
counterclockwise;
CONTROL LEVER
holding it up moves it clockwise. When you release the control lever,
the derrick will stop rotating.
4
DERRICK EXTENSION
Hydraulically extends and retracts the derrick leg. This control is
spring
CONTROL LEVER
loaded to the neutral position.
TA 222534
2-25
