Hyundai Santa Fe: Brake System / Brake Booster. Repair procedures
Hyundai Santa Fe (TM) 2019-2024 Service Manual / Brake System / Brake System / Brake Booster. Repair procedures
| 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 battery and battery tray.
(Refer to Engine Electrical System - "Battery")
|
| 3. |
Remove the master cylinder.
(Refer to Brake System - "Brake Master Cylinder")
|
| 4. |
Remove the fixing clip and the vacuum hose (A) from the brake booster.
|
| 5. |
Disconnect the brake booster vacuum pressure sensor connector (A).
|
| 6. |
Remove the snap pin (A) and the clevis pin (B).
|
| 7. |
Remove the brake booster (B) after loosening the mounting nuts (A).
|
| Inspection |
| 1. |
Inspect the vacuum hose.
|
| 2. |
Check the boot for damage.
|
| Installation |
| 1. |
To install, reverse the removal procedure.
|
| 2. |
After installation, bleed the brake system.
(Refer to Brake System - "Brake System Bleeding")
(Refer to Brake System - "ESP System Bleeding)
|
| 3. |
Check the brake oil leakage and pedal operating condition.
|
Other information:
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Air bag collision sensors
WARNING
To reduce the risk of an air bag deploying unexpectedly and causing serious injury or death:
Do not hit or allow any objects to impact the locations where air bags or sensors are installed. Do not perform maintenance on or around the air bag sensors. If the location or angle of the sensors is altered, the air bags may deploy when they should not or may not deploy when they should. Installing bumper guards with nongenuine Hyundai or non-equivalent parts may adversely affect the collision and airbag deployment performance. Press the Engine Start/Stop button to the OFF or ACC position and wait for 3 minutes when the vehicle is being towed to prevent inadvertent air bag deployment. Have all air bag repairs performed by an authorized HYUNDAI dealer.
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