10-5. Servicing Air Compressor

Tools Needed:

7/8, 15/16 in

Right Side

! Stop engine and let cool. Wait 20 sec- onds for system pressure to drop be- fore changing oil.

1Air Compressor Oil Filter

2Air Compressor Air/Oil Separator

3Air Compressor Oil Drain Hose w/Removable Cap

4Air Compressor Oil Fill Cap

5Air Compressor Oil Level Indicator (On Tank)

6Oil Scavenge Tube

2

To change compressor oil and filter:

.The engine oil drain and compressor oil

drain hoses are located together in the base. Be sure to select the correct hose when draining compressor oil.

.Be sure o-rings at oil drain and oil fill fit- tings are in place before reinstalling caps.

Drain compressor oil while compressor is still warm.

Route compressor oil drain hose through hole in base. Remove compressor oil fill cap. Re- move cap from oil drain hose and drain oil into a suitable container. Reinstall oil drain hose cap. Tighten cap with wrench.

Remove filter by turning filter counterclock- wise. Remove filter. Apply thin coat of oil to gasket on new filter. Install new filter and turn clockwise until tight.

4

5

Too

High

Full

1 Too Low

6

3

803 228

Add recommended oil until oil level indicator shows system is full (see compressor mainte- nance label for oil specifications). Reinstall oil fill cap. Tighten cap with wrench.

To replace air/oil separator:

Loosen nut securing tube on separator base. Lift oil scavenge tube from separator. Turn fil- ter counterclockwise. Remove filter.

Apply thin coat of oil to gasket on new filter. Install filter and turn clockwise. Reinstall oil scavenge tube.

Start engine, run air compressor, and check for oil leaks.

! Stop engine.

OM-4409 Page 55

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Miller Electric OM-4409 Servicing Air Compressor, To change compressor oil and filter, Engine oil drain and compressor oil

OM-4409 specifications

The Miller Electric OM-4409 is a remarkable welding machine designed for both professional welders and enthusiastic hobbyists. Known for its reliability and efficiency, the OM-4409 stands out in the industrial landscape due to its advanced features and innovative technologies.

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