LO 5-3820-241-12
5.
DRILL ENGINE.
WARNING
Oilier system Is pressurized to 90 psi. Do not open until air pressure has been completely eliminated from the air
system.
Fill to "FULL" mark on dipstick. Each 250 hours remove the 2 inch pipe plug located at bottom of the tank, drain,
flush, and refill.
6.
Lubricating oil NSN 9150-00-142-9556, 5 gallon pail, is a rock drill oil for lubrication of drifter drill. If this oil Is
used in temperatures below 32F (0C) it should be diluted with kerosene at the ratio of 1 qt of kerosene to 3 qt of oil.
7.
TRANSMISSION GEAR HOUSING/TRANSMISSION BRAKE HOUSING. Each 50 hours check level. Change
gear lubricant only when required by maintenance action or contamination by water or other foreign material. After refill,
operate for 5 minutes, check for leaks, and bring oil level to level plug opening.
8.
STRIKER BAR AND COUPUNG. Lubricate striker bar, coupling, and drill steel threads whenever drill steel is
changed.
9
GEARBOX. With feed shell positioned horizontally, remove check plug. Oil should be at same level as check
plug opening. If oil level is low, remove fill plug and add oil until it comes out of check plug opening. Install both plugs
and clean up any spilled oil. Change gear oil annually.
Copy of this lubrication order will remain with the equipment at all times; instructions contained herein are mandatory.
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