Shut off the engine. Open the draincock 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 check… Read More »
If the air pressure is being governed at either a higher or lower pressure than the equipment manufacturer’s specification, connect a regulated shop air pressure line to the air compressor governor air signal port. NOTE: Be positive the gauge is accurate and the supply lines and fittings are in good condition before performing any air… Read More »
The air compressor governor location can vary. The air governor can be air compressor mounted or chassis mounted. For air compressor governor specifications, removal, and installation procedures, refer to the OEM service information. Cummins Inc. requires that the air governor setting is in the following range:
Install the “ping” tank. Install the three “ping” tank to fuel filter bracket mounting capscrews. Tighten and mounting capscrews. Torque Value: 24 N•m [ 212 in-lb ] NOTE: Apply a counter-torque to the air compressor discharge fitting when tightening the discharge line. Install the air compressor to “ping” tank discharge line. Connect the air compressor… Read More »
NOTE: For the OEM installed discharge line inspection of carbon buildup. Refer to Procedure 012-003 in Section 12. Clean the air compressor discharge line and “ping” tank with a strong solution of detergent. Dry air compressor discharge line and “ping” tank with compressed air. Inspect the air compressor discharge line and “ping” tank for any… Read More »
NOTE: Apply a counter-torque to the air compressor discharge fitting when loosening the discharge line. Disconnect the air compressor discharge line between the air compressor and the “ping” tank. Remove the discharge line. Remove the three “ping” tank to fuel filter bracket mounting capscrews. Remove the “ping” tank.
The air discharge line is supplied and connected directly to the engine’s air compressor by the vehicles OEM. For some applications, a noise reduction tank or “ping” tank has been installed on the engine to reduce air compressor pumping noise. If the engine is equipped with a “ping” tank, the OEM would connect the air… Read More »
For Wabco air compressors use the following procedure: Prior to installing the air compressor, identify which gasket is going to be installed so that, if necessary, the gasket can be properly oriented. The are two types of accessory drive cover gaskets: • Three round oil supply passages and one elongated oil supply passage • Four… Read More »
NOTE: To make sure the air compressor does not contribute to engine vibrations when installed, the air compressor must be properly timed to the engine. Use the barring tool, Part Number 3824591, or equivalent, to rotate the crankshaft until the number 1 is at top dead center (TDC). Align the vibration damper so that the… Read More »
Install the cylinder block mounting bracket and mounting fasteners. Tighten the mounting fasteners finger-tight. NOTE: Make sure the drive gear and air compressor drive shaft nose are clean and free of any oil before installing the gear on the air compressor driveshaft. Install the drive gear onto the air compressor drive shaft. Install the air… Read More »