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Craftsman 919.167221 Owner's Manual page 18

Permanently lubricated single stage portable air compressor

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IIF_'l_lr_
Un it cycles
automatically
when
power is on. When doing
Maintenance,
you may be exposed
to voltage sources, compressed
air
or moving parts. Personal injuries
can occur. Before performing any
Maintenance
or repair, unplug the
compressor and bleed off all air
pressure.
ALL MAINTENANCE
AND REPAIR
OPERATIONS NOT LISTED MUST
BE PERFORMED
BY A TRAINED
SERVICE TECHNICIAN.
_P_f_
_lefore servicing:
Unplug or disconnect electrica
supply to the air compressor.
Bleed tank of pressure.
Allow the air compressor to
COOL
To Replace
or Clean Check
Valve
1.
Release all air pressure from air
tank, See "To Drain Tank" in the
Maintenance section.
2.
Unplug outfit,
3.
Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
tube away from check valve,
5.
Unscrew the check valve (turn
counterclockwise)
using a 7/8"
open end wrench, Neta the
orientation for reaseembly.
Using a ecrewddver, 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.
!n ¢!osed position
dis_ is visible;
7.
Clean or replace the check valve.
A solvent, such as paint or
varnish remover can be used to
clean the check valve,
8.
Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise),
g.
Replace the pressure release
tube, Tighten nuts.
10. Replace the outlct tube and
tighten nuts.
11. Performthe
Breakqn Procedure.
See "Breakqn I=recedure " in the
Operation section,
4.
Using an adjustable wrench,
loosen pressure relief tube nut at
air tank and pressure switch.
Carefully move pressure relief
tube away from check valve.
[327304
1 B- ENG

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