Atlas Copco Element Overhaul Kit Replacement – 2901070900

The Atlas Copco 2901070900 is a compressor element overhaul kit used during major servicing of the compressor element. It contains critical wear and sealing components required to restore the compressor element’s mechanical condition and operating reliability.

Atlas Copco parts documentation lists the kit with components including bearings, O-rings and spacers.

Working Process

1. Air Intake – Atmospheric air enters the compressor element.
2. Compression – The rotating screw element compresses the incoming air.
3. Bearing Support – Bearings maintain correct rotor positioning during continuous operation.
4. Sealing – O-rings and seals help prevent leakage.
5. Wear Development – Continuous operation gradually wears bearings and sealing components.
6. Element Overhaul – During major service, the element is dismantled and inspected.
7. Component Replacement – Worn bearings, O-rings, spacers and other specified components are replaced using 2901070900.
8. Reassembly – The element is correctly assembled and checked for rotor alignment and free rotation.
9. Return to Service – The overhauled element is reinstalled and compressor performance is verified.

Main Functions

• Supports complete compressor-element overhaul.
• Replaces worn bearings and sealing components.
• Restores proper rotor support and alignment.
• Helps reduce internal leakage.
• Improves compressor reliability.
• Extends the service life of the compressor element.
• Helps prevent premature element failure.

Typical Failure Symptoms

A compressor element requiring overhaul may show:

• Increased vibration.
• Abnormal bearing noise.
• Increased operating temperature.
• Oil or air leakage.
• Reduced compressor capacity.
• Increased power consumption.
• Abnormal rotor noise.
• Reduced overall compressor efficiency.

Known Kit Components

A parts list identifies components associated with 2901070900, including:

Note: The exact contents can depend on the applicable compressor configuration/version. One Atlas Copco parts reference describes 2901-0709-00 as an element-overhaul kit without bearing 0508-1100-54.

Maintenance / Overhaul Procedure

1. Shut down and isolate the compressor.
2. Fully depressurize the system.
3. Allow the compressor to cool.
4. Remove the compressor element according to the applicable service procedure.
5. Dismantle the element.
6. Inspect rotors, shafts, bearings and sealing surfaces.
7. Remove worn bearings, O-rings and spacers.
8. Clean all components and mating surfaces.
9. Install the applicable components from 2901070900.
10. Check rotor clearances and alignment.
11. Reassemble the compressor element.
12. Verify smooth and free rotation.
13. Reinstall the element.
14. Restart the compressor and monitor vibration, temperature and noise.
15. Check for leakage and verify normal compressor performance.

Technical Summary

Recommended catalog title:
Atlas Copco 2901070900 – C77(G)H06 Compressor Element Overhaul Kit for GA/GX 11–37 + GAR, 2901-0709-00.

Atlas Copco’s official listing confirms 2901070900 as “ELEM.OVERH.KIT C77(G)H06.”