TM 9-2320-269-10
PLACING DERRICK INTO OPERATION
The information on the following pages contains Instructions common to all operations of the derrick and its auxiliary
equipment. Make sure you know the location of each control on the truck and console, its purpose and its function. Safety
cannot be over-emphasized when operating the M876 truck.
Placing the Derrick Into Operation
CAUTION
To avoid damage to the starter motor, do not run starter motor longer than 30 seconds.
Do not turn the key switch again until the starter motor and the engine have completely
stopped.
Release the key switch immediately the instant the engine starts running.
NOTE
O
O
Should engine fail to start, see instructions for starting engine below 40 F (4.6 C), page
If, after not more than four repeated starting operations, the engine fails to start, check for
reasons for engine start failure by using the troubleshooting procedures in this manual, or
notify organizational maintenance.
Make sure the truck is positioned on solid, level ground, as lose as possible to the work
area.
1.
With engine not running, engage the PTO and then start engine, either from the cab, or at the console. See
2.
Inside the cab set engine speed to 1200 rpm.
3.
Check all engine gages as you warm up the engine and hydraulic system.
Lowering the Outriggers (Jacks)
CAUTION
Don't allow dirt to become embedded In the outrigger pads. This could prevent the
outrigger pads from seating properly. Failure to seat outriggers firmly will cause derrick
controls not to operate.
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