Boss Hydraulic Air Compressor 36 BHP Piston

1. Check crankcase oil level. Add if needed.

2. Drain condensation from air receiver.;

This following pages describe the disassembly and assembly procedures for the air compressor. In all cases, remove the compressor from the vehicle before proceeding with disassembly and repair within a clean environment. Refer to the parts drawings in this manual for parts locations.

I. Shut down machine and allow to cool for approximately 10 minutes.

II. Verify entire system pressure is relieved before proceeding.

III. Disconnect air inlet system tubes.

IV. Disconnect 3/4"" discharge jumper hose.

V. Disconnect 3/4"" discharge hose.

VI. Disconnect 1/4"" furnace switch tube.

VII. Unscrew the head nuts and remove the heads.

1. Change the crankcase oil (see NOTE 1).

2. Check cooler fins for dirt and obstruction. Clean if needed.;

Before adding or changing compressor oil, make sure that the compressor is completely relieved of pressure. Oil is added at the fill cap on the side of the compressor body. A drain line is located opposite the service door. The proper oil level is in the middle of the oil sight glass, when the unit is shut down and has had time to settle. The truck must be level when checking the oil. DO NOT OVERFILL. The oil capacity is given in “Compressor Specifications”.

The interior of the oil cooler should be cleaned when the pressure drop across it at full flow exceeds 25 PSI.

2. Circulate a suitable solvent to dissolve and remove varnish and sludge.

3. Flush generously with hydraulic oil.

4. Once the cooler is reinstalled, fill the hydraulic system with the proper fluid to their appropriate levels.;

1. Inspect the drive coupling for wear.