Servicing Air Compressor - Miller Electric OM-4409 Owner's Manual

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.
1 Air Compressor Oil Filter
2 Air Compressor Air/Oil Separator
3 Air Compressor Oil Drain Hose
w/Removable Cap
4 Air Compressor Oil Fill Cap
5 Air Compressor Oil Level Indicator (On
Tank)
6 Oil 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
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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