Mitsubishi MOTORS L200 1996, Руководство по ремонту, Страница: 1020 / 1723

BASIC BRAKE SYSTEM –
On-vehicle Service
35A-12
3. With the engine running, step on the brake pedal and
then stop the engine.
Hold the pedal depressed for 30 seconds. If the pedal
height does not change, the booster is in good condition,
if the pedal rises, the booster is defective.
If the above three tests are okay, the booster performance
can be determined as good.
If one of the above three tests is not okay at last, the
check valve, vacuum hose, or booster will be defective.
CHECK VALVE OPERATION CHECK
35100900113
1. Remove the vacuum hose. (Refer to P.35A-20.)
Caution
The check valve should not be removed from the
vacuum hose.
2. Check the operation of the check valve by using a vacuum
pump.
Vacuum pump connection Accept/reject criteria
Connection at the brake
booster side (A) A negative pressure
(vacuum) is created and held.
Connection at the intake
manifold side (B) A negative pressure
(vacuum) is not created.
Caution
If the check valve is defective, replace it as an
assembly unit together with the vacuum hose.
BRAKE BOOSTER VACUUM SWITCH CHECK
<DIESEL-POWERED VEHICLES>
35100920034
1. Connect an ohmmeter to the connector of the vacuum
switch.
2. Start the engine and check for continuity when the vacuum
hose is connected, and when it is disconnected.
The vacuum switch is in good condition if there is no
continuity when the vacuum hose is connected, and if
there is continuity when it is disconnected.
BLEEDING
35100140102
Caution
Use the specified brake fluid. Avoid using a mixture of
the specified brake fluid and other fluid.
Specified brake fluid: DOT3 or DOT4
No good Good
Valve Spring
Booster
side
Intake
manifold
side
A B
Body earth