Pneumatic Valve, Checking

Pneumatic valve, checking
Special tools, testers and auxiliary items
US 8026 hand vacuum pump

Test sequence
^ Disconnect vacuum hose from secondary air injection solenoid valve.
^ Attach US 8026 hand vacuum pump to vacuum hose.
^ Disconnect pressure line from pneumatic valve.

Note: Do not use compressed air for the following check.

^ Connect auxiliary hose to pneumatic valve and blow into it.
Pneumatic valve must be closed.
^ Operate hand vacuum pump.
Valve must open and operate smoothly (without sticking).
^ Replace valve if necessary.