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).
Tightening torque :
16.7 - 25.5 N.m (1.7 - 2.6 kgf.m, 12.3 - 18.8 lb-ft)

Inspection
1.
Inspect the vacuum hose.
2.
Check the boot for damage.
Installation
1.
To install, reverse the removal procedure.
  
•
Before installing the pin, apply the grease to the joint pin.
•
Use a new snap pin whenever installing.
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.

    Brake Booster. Components and components location

    ..

    Master Cylinder. Components and components location

    ..

    Other information:

    Hyundai Santa Fe (TM) 2019-2024 Service Manual: Front Seat Shield Outer Cover. Repair procedures


    Replacement    • Put on gloves to prevent hand injuries.    • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components...

    Hyundai Santa Fe (TM) 2019-2024 Service Manual: Front Pillar Trim. Components and components location


    ..

    Categories

    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.

    read more


     
    Copyright © 2024 www.hsafe4.com