Troubleshooting Your 2955 Series Impact Wrench

If your Ingersoll Rand® 2955B2 Impact Wrench is not operating as expected, use this guide to check common air-supply, lubrication, setup, and operating issues before requesting service.

For routine lubrication and preventive maintenance, see Maintaining Your 2955 Series Impact Wrench.

Before You Begin

Before troubleshooting:

• Inspect the tool, square drive, socket, auxiliary handle, air hose, and fittings for visible damage.
• Make sure the socket is impact-rated, correctly installed, and appropriate for the application.
• Verify that the air supply is connected properly.
• Make sure routine air-motor and impact-mechanism lubrication is up to date.
• Note any unusual noise, vibration, air leakage, or change in performance.

Always turn off the air supply, bleed the air pressure, and disconnect the air hose before adjusting the tool, changing the socket, or performing maintenance.

Start With the Air Supply

If the 2955B2 has low power, low torque output, or other performance problems, check the air supply before assuming the tool requires repair.

The tool requires:

• 90 psi at the tool inlet while operating
• 95 CFM
• Minimum 3/4-inch air hose
• 1/2-inch NPT fitting

To check the air supply:

1. Connect the tool to the air supply.
2. Run the tool at full speed without a load.
3. Measure the air pressure at the tool inlet while the tool is running.
4. Verify that the tool receives 90 psi under these operating conditions.

5. Inspect the hose, fittings, filter, regulator, and other air-system components for leaks, restrictions, or damage.

   Important: Static pressure alone does not confirm that the air system can support the tool. Measure dynamic air pressure while the tool is running.

If pressure drops significantly during operation, correct the air-supply problem before continuing to troubleshoot the tool.

Tool Will Not Run

Possible causes

• No or insufficient air supply
• Blocked or restricted hose or fitting
• Air-supply valve is closed or improperly adjusted
• Internal motor or control problem

Recommended actions

1. Verify that the compressor and air supply are operating.
2. Check the hose and fittings for restrictions, leaks, or damage.
3. Make sure air-supply valves are fully open.
4. Verify dynamic air pressure at the tool.
5. Check that the trigger and controls move normally.
6. Make sure the air motor has received the required lubrication.

If the tool still will not run after the air supply and lubrication have been verified, discontinue use and contact service.

Tool Has Low Power or Low Torque Output

Possible causes

• Insufficient air pressure or airflow
• Undersized or restricted hose
• Dirty or restricted air-supply components
• Inadequate air-motor lubrication
• Internal motor wear or contamination

Recommended actions

1. Verify 90 psi dynamic air pressure at the tool inlet.
2. Confirm that the air system can provide the required 95 CFM.
3. Make sure the air hose is at least 3/4 inch.
4. Inspect hoses, fittings, filters, and other air-system components for restrictions or leaks.
5. Verify that air-motor lubrication is current.
6. If an inline lubricator is not being used, add 8–12 drops of IR #10 Air Tool Oil through the air inlet and run the tool briefly.

If power remains low after these checks, the tool may require internal motor inspection or service.

Motor Runs, but the Tool Does Not Impact

If the motor runs but the impact mechanism does not operate normally, first verify that impact-mechanism lubrication is current.

The 2955B2 requires 4 cc of IR Ultra-Performance Royal Purple Grease with Synslide after every 48 hours of actual trigger runtime.

If lubrication is current but the tool still does not impact:

1. Stop operating the tool.
2. Disconnect the air supply.
3. Inspect the square drive and socket for visible damage.
4. Do not continue operating the tool in an attempt to make the impact mechanism engage.

A tool that runs but does not impact may have worn, damaged, incorrectly assembled, or inadequately lubricated impact-mechanism components. Internal inspection should be performed by qualified service personnel.

Tool Makes Unusual Noise

Unusual noise can indicate inadequate lubrication, wear, contamination, or an internal problem.

Recommended actions

1. Stop using the tool.
2. Disconnect the air supply.
3. Check that air-motor lubrication is current.
4. Verify that the impact mechanism has received its required lubrication.
5. Inspect the socket, square drive, and retaining components for visible damage or excessive wear.
6. Check for loose or damaged external components.

If the unusual noise continues after lubrication and external checks, discontinue use and contact service.

Tool Vibrates Excessively

Excessive or unusual vibration should be investigated before continuing to use the tool.

Recommended actions

1. Stop the tool and disconnect the air supply.
2. Inspect the socket for cracks, deformation, excessive wear, or other damage.
3. Make sure the socket is fully seated and securely retained.
4. Inspect the square drive and socket-retaining components.
5. Check the auxiliary handle and make sure it is secure.
6. Check the tool for loose or damaged external components.

Important: Do not use a damaged socket or continue operating a tool with unexplained excessive vibration. If vibration continues with a properly installed, undamaged socket, contact service.

Socket Will Not Stay Secure

If the socket does not remain securely attached:

1. Disconnect the tool from the air supply.
2. Remove the socket.
3. Inspect the socket for wear or damage.
4. Inspect the square drive and retaining components.
5. Verify that the socket is compatible with the 1½-inch square drive.
6. Replace damaged or excessively worn retaining components as required.

Do not operate the impact wrench if the socket cannot be securely retained.

Tool Leaks Air

If you hear or feel an air leak:

1. Identify whether the leak is coming from the air hose, fitting, connection, or tool.
2. Disconnect the tool from the air supply.
3. Inspect external hoses, fittings, and connections for damage or improper installation.
4. Correct external air-supply leaks before operating the tool again.

If air is leaking from inside the tool or around the tool's controls, internal components may require service.

Tool Performance Has Gradually Decreased

Performance that declines over time may be related to air-system restrictions, inadequate lubrication, contamination, or internal wear.

Check:

• Dynamic air pressure at the tool
• Available airflow
• Hose size and condition
• Filter and regulator condition
• Air-motor lubrication
• Impact-mechanism lubrication
• Socket and square-drive condition

If these items are correct and performance remains below the expected range, the tool should be evaluated by qualified service personnel.

Problems Keep Returning

Repeated problems can indicate a condition that routine customer maintenance cannot correct.

Before requesting service, verify that:

• The tool receives 90 psi while operating.
• The air supply can provide 95 CFM.
• The air hose is at least 3/4 inch.
• Hoses, fittings, and air-system components are not leaking or restricted.
• The air motor receives the required IR #10 Air Tool Oil.
• The impact mechanism receives 4 cc of IR Ultra-Performance Royal Purple Grease with Synslide every 48 hours of actual trigger runtime.
• The socket, square drive, and retaining components are in good condition.

When contacting technical support, describe the symptom and note whether it occurs continuously or intermittently and whether you hear unusual noise or experience excessive vibration.

When to Contact Service

Contact qualified service personnel if:

• The motor will not run after the air supply and lubrication have been verified.
• Low power or torque continues after verifying dynamic air pressure and airflow.
• The motor runs but the tool does not impact.
• Unusual noise or excessive vibration continues.
• The tool has an internal air leak.
• The square drive, trigger, regulator, motor, or impact mechanism requires internal repair.
• Internal disassembly is required.

Do not disassemble the tool unless you are qualified to perform service-level repairs.

Distributors, authorized service centers, and qualified technicians should refer to Servicing the 2955 Series Impact Wrench and the applicable Ingersoll Rand diagnostic and service documentation.

Need Help?

If assistance is needed in the product selection process, please contact Ingersoll Rand's Power Tool Technical Support Team through Submit a Request via our Help Center, email at IRToolHelp@irco.com, or call us at 866-TOOL-HLP (866-866-5457).

Manuals & Downloads

Use the current versions of the following resources for complete product, maintenance, parts, safety, and service information:

• 2955B2 Series Product Information
• 2955B2 Series Parts Information
• 2955B2 Series Maintenance Information