Atlas Copco Exchange Element Installation Kit Replacement – 2906021900

The 2906021900 is a service kit used during compressor element exchange/installation. It supplies the required fastening and sealing components to correctly mount the replacement compressor element and restore leak-free operation.

Atlas Copco’s GA90–160 parts documentation identifies 2906 0219 00 as the Exchange Element Installation Kit.

Working Process

1. Compressor Element Operation – The compressor element compresses incoming air and generates the required pressure.
2. Element Wear – Continuous operation can eventually cause bearing, sealing or internal element wear.
3. Element Removal – During major service, the existing element is removed.
4. Mounting Preparation – The shaft, driven gear and mounting surfaces are inspected and cleaned.
5. Mechanical Fixing – The supplied key and cap screws secure the element/drive connection.
6. Sealing – New O-rings and gasket components restore proper sealing.
7. Reassembly – The replacement element is installed and connected to the compressor system.
8. Leak Testing – The compressor is gradually pressurized and all serviced connections are checked.
9. Performance Verification – Temperature, pressure, vibration and noise are checked after startup.

Kit Components

The Atlas Copco Web Shop lists the following components:

A GA90–160 parts reference specifically identifies 0211 1409 00 – 3 Cap screws, 0337 6074 00 – Key driven gear, 0663 2104 63 – O-ring, and 0663 2106 15/20 – O-rings among the kit components.

Main Functions

• Supports compressor-element exchange.
• Provides replacement sealing components.
• Secures the driven-gear connection.
• Helps prevent air/oil leakage.
• Restores proper element mounting.
• Supports reliable compressor operation after overhaul.

Typical Reasons for Using the Kit

• Compressor element replacement.
• Scheduled major overhaul.
• Excessive element vibration.
• Abnormal compressor noise.
• Reduced air delivery.
• Increased power consumption.
• High operating temperature.
• Internal element wear.

Maintenance / Installation Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate and lock out the electrical supply.
3. Fully depressurize the compressor.
4. Allow the equipment to cool.
5. Drain/isolate the applicable oil circuit.
6. Remove the existing compressor element.
7. Inspect the shaft, driven gear, mounting surfaces and connections.
8. Clean all mating surfaces.
9. Install the supplied key and driven-gear components.
10. Replace the old O-rings and gaskets with those supplied in 2906021900.
11. Install and secure the replacement element.
12. Tighten the supplied screws according to the applicable Atlas Copco specifications.
13. Reconnect the oil and air connections.
14. Restore the oil circuit.
15. Gradually pressurize the compressor.
16. Check for oil/air leakage.
17. Restart the compressor.
18. Monitor pressure, temperature, vibration and noise.
19. Confirm normal operation.

Technical Summary

Recommended catalog title:
Atlas Copco 2906021900 – GA90–GA160 Exchange Element Installation Kit, 2906-0219-00.

Important: Do not confuse 2906021900 with 2906020800, which is another element-related installation kit. The GA90–160 parts documentation specifically identifies 2906021900 / 2906 0219 00 as the Exchange Element Installation Kit.