Craftsman 919.168700 Owner's Manual download pdf (Page 17)

17- ENG

A09711

SERVICE AND ADJUSTMENTS

5. Unscrew the check valve (turn

counterclockwise) using a 7/8"

open end wrench. Note the

orientation for reassembly.

6. 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.

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).

9. Replace the pressure release

tube. Tighten nuts.

10. Replace the outlet tube and

tighten nuts.

11. Perform the Break-in Procedure.

See "Break-in Procedure" in the

"Operation" section.

To Replace or Clean Check

Valve

1. Release all air pressure from air

tank. See "To Drain Tank" in the

"Maintenance" section.

2. Set the On/Auto/Off lever to "Off"

and unplug unit.

3. Using an adjustable wrench,

loosen outlet tube nut at air tank

and pump. Carefully move outlet

tube away from check valve.

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.

Outlet Tube

Check

Valve

Nut

Nut

Pressure

Relief

Tube

In closed position

disc is visible.

In open

position

nothing is

visible.

Screwdriver

Risk of Unsafe

Operation. Unit

cycles automatically when power

is on. When servicing, you may

be exposed to voltage sources,

compressed air, or moving parts.

Before servicing unit unplug or

disconnect electrical supply to

the air compressor, bleed tank

of pressure, and allow the air

compressor to cool.

All maintenance and repair

operations not listed must be

performed by Trained Service

Technician.

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