BOSS Hydraulic Air Compressor BA440

2. Check the cylinder head stud torque (See NOTE 2)

3. Check the operation of the receiver safety values.;

Compressor Oil Fill, Level, and Drain

Before adding or changing compressor oil, make sure that the compressor is completely relieved of pressure. Oil is added at the fill cap on a pipe on the rear of the crankcase. A drain line is located on the rear panel of the machine. Proper oil level is to the “FULL” line on the dipstick, when the unit is shut down and has had time to settle. The machine must be level when checking the oil. DO NOT OVERFILL. The oil capacity is given in “Compressor Specifications”.

Changing the Air Intake Filter

The air intake filter is a heavy-duty dry type high efficiency filter designed to protect the compressor from dust and foreign objects.

Frequency of maintenance of the filter depends on dust conditions at the operating site. The filter element must be serviced when clogged. A clogged air filter element will reduce compressor performance and cause premature wear of components.

Changing the Hydraulic Oil Cooler

The interior of the oil cooler should be cleaned when the pressure drop across it at full flow exceeds 25 PSI. First, remove the cooler. Then, circulate a suitable solvent to dissolve and remove varnish and sludge. Then flush the cooler generously with hydraulic oil. Reinstall the cooler. Once the cooler is reinstalled, fill the hydraulic system with the proper fluid to their appropriate levels.

Shut down the machine and allow to cool for approximately 10 minutes. Next, verify entire system pressure is relieved before proceeding. Then, disconnect air inlet system tubes. Now disconnect 3/4” discharge jumper hose and 3/4” discharge hose. Unscrew the head nuts and remove the heads.

2. Drain Condensation from air receiver.;

1. Change the crankcase oil (See NOTE 1)

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

1. Inspect the drive coupling for wear.