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NOTE: If the air filter is extremely dirty it will need to be replaced. Refer to the
Repair Parts for the correct part number.
AIR COMPRESSOR PUMP INTAkE AND ExHAUST VALVES
Once a year have a Trained Service Technician check the air compressor pump
intake and exhaust valves.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY A TRAINED SERVICE TECHNICIAN.
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to voltage sources, com-
pressed air, or moving parts. Before servicing unit unplug or disconnect elec-
trical supply to the air compressor, bleed tank of pressure, and allow the air
compressor to cool.
TO REPLACE OR CLEAN CHECk VALVE
Release all air pressure from air tank. See To Drain Tank in the Maintenance
1.
section.
2.
Set the Auto/Off lever to "Off" and unplug unit.
3.
Using a phillips screwdriver, remove the air filter cover.
4.
Remove the rear shrouds using T-20 torx wrench.
Remove
5.
Using an adjustable wrench, loosen outlet tube nut at air tank. Carefully move
outlet tube away from check valve.
6.
Using an adjustable wrench loosen pressure relief tube nut at air tank. Carefully
move pressure relief tube away from check valve.
7.
Unscrew the check valve (turn
counterclockwise) using a 7/8" open
end wrench. NOTE the orientation for
reassembly.
8.
Using a screwdriver, carefully push
the valve disc up and down.
NOTE: The valve disc should move freely
up and down on a spring which holds the
valve disc in the closed position; if not
the check valve needs to be cleaned or
replaced.
9.
Clean or replace the check valve. A solvent, such as paint or varnish remover
can be used to clean the check valve.
SERVICE AND ADJUSTMENTS
Remove
In open
position
nothing is
visible.
15 - ENG
Outlet
Tube
Nut
Check
Valve
Nut
Pressure
Relief Tube
Screwdriver
In closed position
disc is visible.
N015840
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