Brake Booster Operating Test |
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, the booster 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. |
Removal |
1. |
Turn ignition switch OFF and disconnect the negative (-) battery cable. |
2. |
Remove the air duct (B) and air cleaner assembly (A). |
3. |
Remove the battery and battery tray.
|
4. |
Disconnect a connector and loosen the wiring harness mounting nuts. Then pivot the wiring harness (A) side out of the way. |
5. |
Disconnect the brake fluid level switch connector (B), and remove the reservoir cap. |
6. |
Remove the brake fluid from the master cylinder reservoir with a syringe.
|
7. |
Remove the brake tube (A).
|
8. |
Remove the master cylinder (B) from the brake booster after loosening the mounting nuts (A).
|
9. |
Disconnect the vacuum hose (A) from the brake booster. |
10. |
Remove the snap pin (A) and clevis pin (B). |
11. |
Remove the mounting nuts.
|
12. |
Remove the brake booster (A). |
Inspection |
1. |
Inspect the check valve in the vacuum hose.
|
2. |
Check the boot for damage.
|
Installation |
1. |
Installation is the reverse of removal.
|
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) |
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1.
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2.
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3.
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