MAINTENANCE SECTION
TROUBLESHOOTING GUIDE
Trouble
Probable Cause
Solution
Low power or low free speed
Low air pressure
Check the air pressure at the inlet. The pressure
must not exceed 90 psig (6.2 bar/620 kPa).
Plugged Inlet Bushing Screen or
Air Strainer Screen
Clean the Screen in a clean, suitable, cleaning
solution. If it cannot be cleaned, replace it.
Worn or broken Vanes
Replace the complete set of Vanes.
Loose Rotor Bearing Retaining
Nut
Tighten the Nut.
Worn or broken Cylinder
Replace the Cylinder if it is worn or broken or if
the bore is scored or wavy.
Scoring of End Plates
Replace End Plates if they are scored.
Improper lubrication or dirt
build–up in the motor.
Lubricate the Wrench as instructed in
LUBRICATION. If lubrication does not result in
satisfactory operation, disassemble the motor in-
spect and clean all parts.
Scoring
Improper assembly
Make certain that all motor or Cylinder parts are
properly aligned prior to clamping the motor
assembly.
Gear Case gets hot
Excessive grease
Clean and inspect the Gear Case gearing parts and
lubricate as instructed in LUBRICATION.
Worn or damaged parts
Clean and inspect the Gear Case and gearing.
Replace worn or broken components.
Tool fails to shut off
Dirt or Burrs on Shutoff Valve or
Bushing
Clean the parts and remove the burrs.
Bleeder ports plugged
Clean the bleeder ports with a fine wire.
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.