Inspect the compressor housing for cracks or other damage. Inspect the drive gear for cracks or other damage. NOTE: For Wabco branded air compressors, the…

Remove the cylinder block mounting bracket and mounting fasteners. NOTE: Replacement Knorr-Bremse’ .. air compressors are shipped without an air compressor drive gear. If replacing…

Remove the air compressor support bracket mounting capscrews. Remove the air compressor support bracket to the cylinder block mounting bracket capscrews. Remove the air compressor…

• Park the vehicle, apply the parking brakes, and chock the wheels. • Drain the air system. • For systems that do not use an…

Cummins® engines are equipped with a variety of air compressors, including a two cylinder version. This procedure will cover the removal, cleaning, inspection, and installation…

Remove the air governor or air governor signal line from the air compressor. Install the pipe plugs into all of the air governor unloader ports…

NOTE: A new gasket kit must be used each time the air compressor cylinder head is removed and installed. Do not reuse the cylinder head…

Carefully place a new gasket on the lower section of the cylinder head. Place the upper section of the cylinder head and insert five internal…

Air compressor cylinder heads can be rebuilt with new gaskets if air or coolant leaks are detected. Disassemble the cylinder head by removing the five…

NOTE: The below clean and inspect steps are only to be completed if the air compressor cylinder head was removed as part of another repair.The…