TM 9-2320-269-10
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
DERRICK- EXTERIOR
Derrick Sub-frame
Steel fabricated and welded into one unit. Sub-frame includes derrick mast, outriggers, and derrick operator's control
console. The sub-frame mounts on and is bolted to the M876 truck frame. The sub-frame derrick mast supports the
derrick and distributes derrick loads to M876 truck frame.
Derrick Operator's Station
Hydraulic control platform which houses the selector control valves which operate the derrick. It also has an Independent
throttle control to increase engine RPM required during derrick operations.
Outriggers
Four hydraulically operated jacks that stabilize the M876 truck during derrick operations. Outriggers have an Interlock
safety system that prevents derrick operating until all four outriggers are down on the ground.
TA 222499
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