PHQ250JHMAVL Jackleg MK 1 Parts and Repair Manual PDF

Troubleshooting Guides
Problem Probable Cause Remedy
Page 39
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109. Bronze cuttings
Rifle bar heat checked from
exhausting from rock Rifle Nut Failing
lack of lubrication (SM 111).
drill ports.
Rifle nut burned by overheating Rifle Bar failing or broken.
Replace at rockdrill shop.
Chuck Nut Failing
Chuck nut burned by overheating
Piston heat checked from lack
of lubrication (SM 111)
Piston failing or broken.
Replace at rock drill shop
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110. Drill parts wearing
faster than normal.
Improper Lubrication. (SM 111).
Service trips to rockdrill
shop too frequent.
Dirt or debris entering the drill
Check front end blow
Plug or cover all openings in
the drill when in storage or
moving between drill sites.
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111. Faulty Lubrication
If using rock drill oil fill
lubricator at beginning of shift
According to experts in
and check level mid shift.
the maintenance field:
If using rock drill grease fill
the lubricator at the beginning
Lack of Lubrication
“Lack of lubrication is
of each shift.
the leading cause of
Check lubricator flow setting.
failure of parts in
Lubricant high viscosity (too
machinery”!
thick) for ambient temperature
Drill hose maximum 12 feet
Wrong Lubrication
Excessive Lubrication
Lubricator flooded by oil
Lubricator stuck with grease.
Excessive water in the air supply
Use EP100 rockdrill oil or
Triple zero Vultrex grease at
temperatures -10 +40° Celsius
Check lubricator setting
Oil at a viscosity too low for a
warm ambient temperature
Grease may be too thick for a
cold ambient temperature.
Lubricator may be damaged.
Excessive water will wash
lubricant out of the drill.
(SM 106).
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Version 200711