Ingersoll-Rand 3940P2Ti, Maintenance Information, Page: 4 / 8

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Related Documentation
For additional information refer to:
Air Impact Wrench Product Safety Information Manual 04580916.
Air Impact Wrench Product Information Manual 10569382.
Air Impact Wrench Parts List Manual 80171911.
Troubleshooting Guide
Trouble Probable Cause Solution
Low power Dirty Inlet Bushing or Air Strainer Screen and/or
Exhaust Silencer. Using a clean, suitable cleaning solution, in a well ventilated
area, clean Air Strainer Screen, Inlet Bushing and Exhaust
Silencer.
Worn or broken Vanes. Replace the complete set of Vanes.
Worn or broken Cylinder and/or scored End Plates. Examine the Cylinder and replace it if it is worn or broken or
if the bore is scored or wavy. Replace the End Plates if they
are scored.
Dirty motor parts. Disassemble tool and clean all parts with a clean, suitable
cleaning solution, in a well ventilated area. Reassemble tool
as instructed in this manual.
Improper positioning of the Reverse Valve. Make certain that the Reverse Valve is fully engaged to the
left or right.
Motor will not run Incorrect assembly of the motor. Disassemble the motor, replace worn or broken parts and
reassemble as instructed.
Insufficient lubricant in the impact mechanism. Remove the Hammer Case Assembly and lubricate the
impact mechanism.
Tool will not impact Broken or worn impact mechanism parts. Remove the Hammer Case and examine the impact
mechanism parts. Replace any worn or broken parts.
Impact Mechanism not assembled correctly. Refer to Assembly of the Impact Mechanism.