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7032 SOUTH 196th - KENT, WA. 98032 - (206) 872-0141 / FAX (206) 872-8710
MODEL 50/75 AUGER
OPERATION / MAINTENANCE MANUAL
IV. PREPARATION AND OPERATION
IV-1. Filling Auger Pressure Hose.
The auger is shipped with the hoses filled with oil. However, if the unit has been sitting for a long period
of time or if a damaged hose has been replaced with a new one, then the hoses must be filled. Hook
up all the hoses to the power unit. Start the power unit and let it run for ten minutes before running
the auger. The hoses will fill up by themselves in ten minutes even if the auger is not running.
WARNING!
If the diesel engine is shut down while the clamp switch is in the CLOSED position, the small
3/8" quick disconnect may be difficult to remove. This is because it may still have 500 psi
pressure on it. Start engine and turn clamp switch to OFF first, then shut engine down.
IV-2. Changing Speeds On The Drill.
The Model 50/75 has two speeds. However, speed of rotation can be fine tuned by throttling the
engine rpm up or down. For maximum torque at low speeds turn the clamp switch to OFF. This will
de-energize the two-speed valve, slow the rotation down, and give you maximum torque. Then
slow the engine down if you need slower rotation speeds.
To get maximum speed, turn clamp switch to CLOSED. This will energize the two-speed valve
on the drill motor by sending 500 psi of oil pressure to the spool which shifts the spool and blocks
delivery to half the pistons which doubles the speed. Turning the engine rpm to full throttle gives
you the maximum rpm if the spool is energized.
IV-3. Shutdown Procedures.
1.Stop drill.
2.Turn clamp switch to OFF.
3.Reduce speed to low idle for a couple of minutes.
4.Stop the engine by turning the ENGINE START switch to OFF.
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