45612751_ed1
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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 inspect 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.
Leaky Throttle Valve
Worn Throttle Valve and/or Throttle Valve Seat Install a new Throttle Valve and/or a Throttle Valve Seat
Dirt accumulation on Throttle
Valve and/or Throttle Valve Seat
Pour about 3 cc of a clean, suitable, cleaning solution in the air
inlet and operate the tool for about 30 seconds. Immediately,
pour 3 cc of the recommended oil in the air inlet and operate
the tool for 30 seconds to lubricate all cleaned parts.
Related Documentation
For additional information refer to:
Product Safety Information Manual 04585006.
Product Information Manual 03533932.
Parts Information Manual 45612744.
Manuals can be downloaded from www.irtools.com.
