106-5122 24V A/C Compressor for Caterpillar 924G 928G 950G Loaders

106-5122 A/C Compressor Overview

The 106-5122 refrigerant compressor is a new aftermarket replacement for selected Caterpillar wheel loaders and track loaders. It can replace Caterpillar part number 3E-1909 and corresponds to the Sanden 4479 compressor configuration.

This 24V SD7H15-type compressor is designed for R134a air conditioning systems. The standard configuration uses a 152 mm single-groove V-belt clutch pulley and a two-wire electrical connector.

Known applications include Caterpillar 924G, 928G, 930G, 938G, 950G and 962G wheel loaders, together with 953B and 973C track loaders. Because configurations may vary by machine serial number, the original compressor and connection details should still be checked before ordering.

Fitment Checks Before Installation

Compare the original part number, operating voltage, mounting ears, pulley diameter, belt groove, electrical connector and refrigerant port arrangement with the existing compressor. Machine model alone may not identify every configuration.

For accurate confirmation, provide the Caterpillar machine model, serial number, original compressor number and clear photos of the pulley, connector, ports and mounting points.

Installation Precautions

The refrigerant should be recovered by qualified personnel before removing the old compressor. Inspect the air conditioning circuit for contamination, leakage or compressor debris and service the receiver drier and related components when necessary.

Check the lubricant specification marked on the supplied compressor before installation. After fitting, evacuate the system, perform a leak test and charge it with the correct amount of R134a refrigerant.

FAQ

Is 3E-1909 interchangeable with 106-5122?

Yes. The 106-5122 compressor is commonly supplied as a replacement for Caterpillar part number 3E-1909. The original configuration should still be compared before ordering.

Is the 106-5122 compressor 12V or 24V?

This compressor configuration uses a 24V electromagnetic clutch. Do not connect it to a 12V electrical system.

Which Caterpillar machines use this compressor?

Verified applications include Caterpillar 924G, 928G, 930G, 938G, 950G and 962G wheel loaders, as well as 953B and 973C track loaders. Fitment can vary by serial number.

How can I confirm the correct compressor before ordering?

Check the original part number, voltage, pulley, mounting arrangement, connector and refrigerant ports. Sending the machine serial number and photos of the existing compressor can help confirm the correct configuration.

What is the warranty period?

The standard warranty period is 6 months. Correct system cleaning, lubrication, evacuation and refrigerant charging are required during installation.