18 m m , 14 m m , 10 m m Use a new gasket. Install the air compressor to the gear housing. Install the air compressor support bracket. Torque Values: Mounting Nuts 77 N*m [57 ft-lb] Support Capscrews 24 N*m [18 ft-lb] NOTE: No timing of gears is necessary. 9/16 inch Install the oil… Read More »
Locate TDC on the compressor crankshaft by removing the unloader valve or head, (refer to the (respective) air compressor manual.) TDC does not have to be exact. The system is tolerant of some misalignment. Use ink or dychem to mark the air compressor gear face at TDC (12:00 o’clock position when viewed from the front.)… Read More »
Preparatory Steps: • Steam clean the air compressor and dry with compressed air. • Drain the engine coolant if the air compressor has a liquid cooled cylinder head. If compressor is air cooled, then the engine coolant need not be drained. • Open the drain cock on the wet tank to release air from the… Read More »
Air Compressor Pumps Continuously Remove the accessory air lines from the air governor unloader port. NOTE: Do not disconnect the line from the air compressor unloader valve. Do not disconnect the reservoir air line from the air governor. If the governor is mounted on the compressor, do not remove the governor from the compressor. Install… Read More »
Air Compressor Will Not Pump Remove the air governor hose from the air compressor unloader body. If the air governor is mounted directly on the air compressor, then remove the air governor from the compressor. Warning: During this test, do not exceed maximum vehide air system pressure or 1035 kPa [150 psi] whichever is lower.… Read More »
Shut off the engine. Open the drain cock on the wet tank to release air from the system. Close the draincock after the pressure is released. Operate the engine to activate the air compressor. With the air compressor pumping between 550 to 690 kPa [80 to 100 psi], use a solution of soapy water to… Read More »
1-1/4 inch Remove the following parts: • Unloader cover (1) • Copper washer (2) • Unloader pin (4) • Spring (5) Discard the copper washer. Remove and discard the o-ring (3). 9/16 inch Remove the four cylinder head capscrews (6). Remove the cylinder head (7). Remove and discard the cylinder head gasket (8). Service Tip:… Read More »
Shut off the engine. Open the draincock on the wet tank to release compressed air from the system. Use steam to clean the compressor. Use compressed air to dry. Remove the air inlet and outlet connections from the air compressor. Measure the total carbon deposit thickness inside the air discharge line as shown. NOTE: The… Read More »
The following special tools are recommended to perform procedures in Section 4. The use of these tools is shown in the appropriate procedure. These tools can be purchased from your local Cummins Authorized Repair Location.