Service And Adjustments - Craftsman 919.184190 Manual Del Propietário

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SERVICE AND ADJUSTMENTS

Unit cycles
automatically when
power is on. When performing
adjustments or repair, you may be
exposed to voltage sources,
compressed air or moving parts.
Personal injuries can occur. Before
performing any adjustments or
repair, unplug the compressor and
bleed off all air pressure.
ALL SERVICE AND REPAIR
OPERATIONS NOT DESCRIBED IN
THIS MANUAL MUST BE
PERFORMED BY A TRAINED
SERVICE TECHNICIAN.
Before servicing:
• Unplug or disconnect electrical
supply to the air compressor.
• Bleed air 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 Air tank" in
the Maintenance section.
2. Unplug unit.
3. Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
tube away from check valve.
Nut
Pressure Outlet Tube
Relief Tube
Nuts
Check Valve
D24917
4.
5.
6.
In open
position
nothing is
visible.
7.
8.
9.
10. Replace the outlet tube and
11. Perform the Break-in Procedure.
Nut
20- ENG
Using an adjustable wrench,
loosen pressure relief tube nut at
air tank and pressure switch.
Carefully move pressure relief
tube away from check valve.
Unscrew the check valve (turn
counterclockwise) using a 7/8 "
open end wrench. Note the
orientation for reassembly.
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 it in the
closed position; if valve disc is
not moving freely the check valve
needs to be cleaned or replaced.
Screwdriver
In closed position
disc is visible.
Clean or replace the check valve.
A solvent, such as paint or
varnish remover can be used to
clean the check valve.
Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise).
Replace the pressure release
tube. Tighten nuts.
tighten nuts.
See "Break-in Procedure" in the
Operation section.