Craftsman 919.167362 owner manual Service and Adjustments, To Replace or Clean Check Valve

SERVICE AND ADJUSTMENTS

Unit 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 TRAINED SERVICE TECHNICIAN.

To Replace or Clean Check Valve

1.Release all air pressure from air tank. See “To Drain Tank” in the Maintenance section.

2.Unplug unit.

3.Loosen the nut on the pressure release tube and move the tube to the side.

Outlet Tube

Nut

Pressure

Relief Tube

Check

Valve

Nut

4.Loosen the nut on the outlet tube and move the outlet tube to the side.

5.Unscrew the check valve (turn counterclockwise) using a socket wrench.

6.Make sure the valve disc moves freely inside the check valve and the spring holds the disc in the upper, closed position. The check valve may be cleaned with a solvent, such as paint and varnish remover.

Screwdriver

In open position nothing is visible.

In closed position disc is visible.

7.Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise).

8.Replace the pressure relief tube and tighten the nut.

9.Replace the pressure outlet tube and tighten the nut.

10.Perform the Break-in Procedure. See “Break-in Procedure” in the Operation section.

D28409 16- ENG