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9-5. Servicing Air Compressor
3
!
Stop engine and let cool. Wait 20 sec-
onds for system pressure to drop be-
fore changing oil.
1
Air Compressor Oil Filter
2
Secondary 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
6
Air Compressor Primary Air/Oil
Separator Tank
7
Oil Scavenge Tube
.
Complete Parts List available at www.MillerWelds.com
Air Compressor Assembly Right Side
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
7
1
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 secondary air/oil separator:
Loosen nut securing oil scavenge tube on
separator base. Lift oil scavenge tube from
separator. Turn filter counterclockwise. Re-
move 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.
Tools Needed:
7/8, 15/16 in.
5
6
Too
High
Full
Full
Too
Low
907 634−2 / 255 862-A
OM-267603 Page 63
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