Mitsubishi 1989-1993 GALANT Service Manual page 1176

SERVICE BRAKES
Valve .
Spring
Valve
3. Check the operation of the check valve by using a vacuum
Vacuum pump connection Accept/reject criteria
Connection at the brake A negative pressure (vacuum) is
booster side @I
Connection at the intake
<From 1990 models>
When checking the check valve, keep the check valve fit in the
vacuum hose.
Caution
The check valve is press-fit inside the vacuum hose and
do not remove the check valve from the vacuum hose.
2. Check the operation of the check valve by using a vacuum
Vacuum pump connection Accept/reject criteria
Connection at the brake A negative pressure (vacuum) is
booster side @
Connection at the intake
manifold side @
Caution
unit together with the vacuum hose.
TSB Revision
created and held.
A negative pressure (vacuum) is not
created.
created and held.
A negative pressure (vacuum) is not
created.