Mitsubishi Stealth 1994 Import Service Manual page 204

5-48
Valve Spring
Pressure
Pressure
Split point
output
pressure
Input pressure
BRAKES
2. Check the operation of the check valve by using a vacuum
Vacuum pump connection
Connection at the brake
booster side @
Connection at the intake
manifold side @
Caution
If the check valve is defective, replace it as an assembly
unit together with the vacuum hose.
Accept/reject criteria
A negative pressure (vacuum) is
created and held.
A negative pressure (vacuum) is not
created.