| Brake Booster Operating
Test |
For simple checking of
the brake booster operation, carry out the following tests
| 1. |
Run the engine for one or two minutes, and
then stop it. If the pedal depresses fully the first time but
gradually becomes higher when depressed succeeding times, the
booster is operating properly, if the pedal height remains
unchanged, thebooster is inoperative.
|
| 2. |
With the engine stopped, step on the brake
pedal several times.
Then step on the brake pedal and start the
engine. If the pedal moves downward slightly, the booster is in good
condition. If there is no change, the booster is
inoperative.
|
| 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 inoperative.
If the above three tests are okay, the booster
performance can be determined as good.
Even if one of the above three tests is not
okay, check the check valve, vacuum hose and booster for
malfunction.
|
| 1. |
Inspect the check valve in the vacuum
hose.
|
Do not remove the check valve from the
vacuum
hose. | |
| 1. |
Remove the air cleaner assembly.
|
| 2. |
Disconnect the vacuum hose (A) from the brake
booster.
|
| 3. |
Disconnect the brake fluid level switch
connector (A) from the reservoir.
|
| 4. |
Remove the master cylinder. (Refer to Master
cylinder) |
| 5. |
Remove the snap pin (A) and joint pin
(B).
|
| 6. |
Remove the brake booster (A) by loosening the
mounting nuts.
Tightening
torque :
16.7 ~ 25.5N.m (1.7 ~ 2.6kgf.m, 12.3 ~
18.8lb-ft
|
|
| 1. |
Installation is the reverse of
removal.
| •
|
Before installing the pin, apply
the grease to the joint
pin. |
| •
|
Use a new snap pin whenever
installing. | | |
| 2. |
After installing, bleed the brake system.
(Refer to Brake system bleeding) |
| 3. |
Adjust the brake pedal height and free play.
(Refer to Brake pedal height and free play
adjustment) |
