Hyundai 58610-26000 Booster Assembly-Brake

Brakes should be inspected whenever the wheels are removed or when a brake system defect is suspected, in addition to the specified maintenance intervals. Watch out for such brake system problems as vehicle pull to one side when applying the brake pedal or squeal/ drag noise during braking, too much loss of brake pedal travel, pedal pulsations and even brake fluid leaks. Commence by loosening wheel lug nuts; then raise and safely support the vehicle on stands. Remove the wheels in order to gain access to the braking components. For vehicles that have disc brakes both front and rear with a mechanical drum-type parking brake mechanism inside the rear discs, check pad thickness through inspection window in caliper body and replace pads if lining material is insufficient. If you cannot assess pad thickness accurately or are unsure about anything else, remove calipers and pads for more detailed examination. After cleaning these pads using brake cleaner re-measure them again. Using a micrometer measure disc thickness making sure it meets minimum specified thickness; replace thinner discs and resurface damaged ones. Before putting back on wheels inspect all break lines/hoses for damages/wear/corrosion/leakage and correct accordingly. Lastly go through a sequence of checking your booster systems followed by evaluating how effective your park brakes are by testing them on steep hills while the car is parked Neutral gear. The parking brakes require attention if they do not stop rolling downhill.

To carry out an operating check, bring the brake pedal down several times with the engine off to show that the reserve pedal distance does not change, then with the engine on check if the pedal goes down slightly. For airtightness check, switch on the engine for 1 or 2min, then switched off the engine and depress the brake pedal gently few times, if the pedal pressure is less with each depression, it indicate that the hydraulic booster is airtight. Set the brake pedal while the engine is running and shutdown the engine while the brake pedal remains depressed; when the reserve has been held for at least 30seconds there will be no reduction in the reserve travel of the pedal and hence the booster proved airtight. If the power brake booster units are removed do not disassemble them for they are sensitive and always use real tools, instead, get new or rebuilt ones. Base your procedure with the brake master cylinder's removal and some models may require the removal of the brake lines crossing across in front of the MC. Slowly unplug the vacuum hose on the brake booster and unscrewing the brake pedal return spring on the top of the brake pedal as well as the clip and clevis pin. Secondly, to do that, unbolt the four machine screws on the brake booster to the fire wall and then pull the booster out, towards the rear of the vehicle until the studs come off the holes. For installation, this should be done in the reverse of the mentioned removal process and make sure that the booster mounting nuts are tightened to the recommended torque. It could also be used after fitting the master cylinder and brake hoses where one has to set the brake pedal height and freeplay together with bleeding the system depending on the situation.