7100 851 009 Mack and Volvo Compressor Crankcase

What does a compressor crankcase do?

This compressor crankcase serves as a fundamental housing within the air brake compressor system, ensuring the structural integrity of internal moving parts. By providing a secure environment for the crankshaft and piston assembly, it maintains the necessary pressure levels required for reliable pneumatic braking performance in heavy commercial vehicles.

Compatible vehicles and engines

This component is compatible with Mack trucks including TITAN, PINNACLE, ANTHEM, TERRAPRO, GRANITE, MRU, and LR models. It is also fitted to a wide range of Volvo vehicles such as the FH series, FM series, VNL, VHD, FL, and FE models. The part is engineered to meet the rigorous demands of heavy-duty transport operations.

Installation and maintenance

For professional installation, technicians should verify all mounting points and ensure the surface is free of debris. Regular inspection of the crankcase housing is recommended to prevent air leaks or oil contamination within the pneumatic circuit. Proper sealing during assembly is critical to maintain system pressure.

Troubleshooting and selection

If you notice unusual noise or a drop in air pressure within the braking system, inspect the crankcase and related seals. Maintaining high-strength components ensures long-term reliability for fleet operators.

OE cross-reference

7100 851 009 (Compressor Crankcase) is the equivalent of the WABCO OE numbers. This part directly replaces WABCO OE numbers 9121120102, 9121120106.