Elantra rear brake replacement

Does the car have ABS ? And does it have an equalizer block for the 4 wheels ?
It sounds like the ABS has been affected, or there is an equalizer block that is stuck on the front wheels only.
Can you open the bleeder or the rear line on the master cyl and get fluid to come out by depressing the pedal ?

Hi Richard, I think you may find that the park brake works on a separate system with a set of small brake liners inside a drum on the rear wheels. If I'm wrong and it uses the disc pads, try replacing the pads and adjusting the travel, that should sort out the problem. Regards John

Park the polo on level ground, turn the engine off and apply the parking brake. Pull the hood release handle and move to the front of the car.

Lift the hood and remove the master cylinder. Remove one-half of the brake fluid inside the reservoir with a syringe.

Loosen the lug nuts on the rear wheels with a tire iron. Place the jack beneath the frame at the back of the Volkswagen and lift the back tires off the ground. Rest the rear axles of the Volkswagen on two jack stands. Remove the lug nuts and take the rear wheels off.

Reach behind the brake caliper to locate the caliper mounting pins. Remove the pins with a 12 mm socket and ratchet. Lift the caliper from the brake rotor and suspend it above the wheel assembly with a bungee cord or wire coat hanger.

Remove the rear brake pads from the slots in the caliper bridge. Inspect the caliper bridge and rotor for damage and significant wear. Replace the rotor if it is warped or badly scored. Scoring of the rotors can lead to break failure and will prematurely wear the new brake pads. Place new brake pads into the slots of the caliper bridge.

Attach the piston depression tool to the caliper. The tool will fit over the back side of the caliper and against the piston inside. Twist the tool's handle to force the piston into the side of the rear caliper. Remove the tool once the caliper piston is totally depressed within the caliper.

Replace the caliper onto the caliper bridge and screw in the caliber mounting pens by hand. Replace the rear wheel onto the wheel bolt and screw on the lug nuts.

Repeat the process for the other side of the rear of the polo. Lift the rear end of the vehicle with the jack and remove the jack stands. Lower the rear tires to the ground and tighten the lug nuts with a lug wrench.

Return to the engine compartment. Remove the master cylinder cap and check the level of brake fluid. Place a funnel into the container and fill the reservoir with brake fluid as needed.

Brake Pads
Removal & Installation
Front





3.4L front disc brake assembly









4.0L and 4.7L front disc brake assembly




To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Front wheel
     
   • Clip, 2 caliper pins, the anti-rattle spring then remove the 2 brake pads
     and the 4 anti-squeal shims

To Install:

CAUTION
Only replace brake pads on 1 side of the
vehicle at a time. Failure to use this procedure could cause the caliper pistons
on the opposite side of the vehicle to pop out requiring the reconditioning or
replacement of the brake caliper.

1. Remove a small amount of brake fluid from the master cylinder.
   
2. Install a used brake pad into the caliper and compress the caliper pistons.
   
3. Apply disc brake grease to both sides of the inner anti-squeal shims.
   
4. Install or connect the following:
   
   
   
   • Anti-squeal shims to the new brake pads
     NOTE: When replacing worn pads, the anti-squeal shims must be replaced
     together with the pads.
     
     
   • 2 brake pads
     
   • Anti-rattle spring and the 2 caliper pins
     
   • Clip
     
   • Front wheel
   
   
5. Depress the brake pedal several times to seat the brake pads.
   
6. Check the brake fluid level and top off as needed.

Rear
To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Rear wheel
     
     
     
     
     
     
     
     
     
     
     
   • 2 cylinder slide pins from rear caliper assembly
     
   • Caliper assembly from rear caliper mounting
     
   • 2 brake pads with anti-squeal shims from rear caliper mounting
     
   • 2 anti-squeal shims from each disc brake pads
     
   • Pad wear indicator plate from the inner side disc brake pad
     
   • 4 pad support plates from the rear caliper mounting

To Install:

1. Install or connect the following:
   
   
   
   • 4 pad support plates on the rear caliper mounting
     
   • Pad wear indicator plate on the inside brake pad
     Note: Install the pad wear indicator facing downward.
     
     
   • Anti-squeal shims on each brake pad
     
   • 2 disc brake pads with anti-squeal shims to the caliper assembly
   
   
2. Apply lithium soap base glycol grease to the sliding part of 2 caliper slide
   pins.
   
3. Install or connect the following:
   
   
   
   • Disc brake caliper assembly with 2 caliper slide pins
     
   • Torque to 65 ft-lbs (88 Nm)
     
   • Rear wheel
   
   
4. Depress the brake pedal several times to seat the brake pads.
   
5. Check the brake fluid level and top off as needed.

--- Removal & Installation
Front
To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Front wheel
     
   • Front brake caliper assembly
   
   
3. Make matchmarks on the disc and the axle hub.
   
4. Remove the front disc.

To Install:

1. Align matchmarks and disc onto axle hub.
   
2. Install or connect the following:
   
   
   
   • Front brake caliper assembly with the 2 bolts
     
     
     
     1. Torque to 90 ft-lbs (123 Nm)
     
     
   • Front wheel

This is usually caused by a leaking wheel cylinder allowing brake fluid on the brake shoes. The wheel cylinder actuates the brake pads when the brake pedal is depressed and only can be inspected by removing the brake drums.

1.Remove the cap from the brake fluid reservoir

2.Loosen the wheel nuts then raise the vehicle and remove wheel

3.Push the piston back into the bore to provide room for the new brake pads.A C-clamp can be used to accomplish this As the piston is depressed to the bottom of the caliper bore the fluid in the master cylinder will rise.Make sure is doesnt overflow.If necessary drain off some of the fluid. 4.Before removing anything,spray the disc,and brake pads with brake system cleaner dont use compressed air 5.remove the caliper mounting bolt,the banjo fitting for the brake hose shouldnt be disconnected unless you are removing the caliper or hose replacement

6.Swing the caliper up and secure the caliper up towards the spring with a piece of wire then remove the lower and upper anti-rattle springs.Remove the outer brake pad and shim then remove the inner brake pad ans shim(s)

7.Remove and inspect the upper and lower pad retainer clips,the pad retainer clips should fit snugly in the caliper mounting bracket;if they dont,replace them.Apply thin film of high-temperature grease to the retainer

8.Apply anti-squel compound to the back of pads install the new inner pad and shim(s) make sure the "ears" on the upper and lower ends of the pad are fully engaged with their respective grooves and the pad retainer clips

9.Install the new outer pad and shim if new pad has no shim take the old shimoff the old pad and install it on the new outer pad.Install the upper and lower anti-rattle springs

10.Clean off the caliper pin and coat it with high-temperature grease.Lubricate the lower caliper pin with grease too thenswing the caliper down over the disc and new pads (if the piston hits the inner pad depress the piston further into the caliper bore with your c-clamp

11.Install the mounting bolt and tighten it to the torque specifications (44-63) 99 and earlier models (51-55)00 and later models
12.Put the wheel back on and tighten lug nuts

disc brakes on the rear of a vehicle have a screw out mechanism that attaches to the ebrake . this means that you must turn the caliper piston to recess into the cylinder.
open the bleed screw to make it move eazier.

You must find mounted on the right side of the rear axel,a regulator for brake pressure (weight)I thing there is your problem.

Raise the rear of the vehicle and make sure it is securely supported. Remove the rear wheel Remove the brake hose (A) from the suspension arm by removing the brake hose clip (B).Thoroughly clean the outside of the caliper to prevent dust and dirt from entering inside.Support the caliper with a piece of wire so that it does not hang from the brake se.
Remove the two guide rods (C) and caliper (D) from the bracket. Remove the pad shim (A) and brake pads (B).

Remove the pad retainers.
Clean the caliper thoroughly; remove any rust, and check for grooves and cracks. Check the brake disc for damage and cracks. Install the pad retainers. Check the foreign material at the pad shim (A) and the back of the pads (B). Contaminated brake discs or pads reduce stopping ability. Keep grease off the discs and pads.
Install the brake pads (B) and pad shim (A) on the caliper bracket. Install the inner pad with its wear indicator (C) facing down ward. If you are reusing the pads, always reinstall the brake pads in their original positions to prevent a momentary loss of braking efficiency. Rotate the caliper piston (A) clockwise into the cylinder, the align the cutout (B) in the piston with the tab (C) on the inner pad by turning the piston back. Lubricate the boot with rubber grease to avoid twisting the piston boot. If the piston boot is twisted, back it out so it is positioned properly.
Install the brake caliper (D). Install and torque the guide rods (E) to proper specification. Install the brake hose (F) onto the suspension arm with the brake hose clip (G). After installation, check for leaks at hose and line joints and connections, and retighten if necessary. Depress the brake pedal several times to make sure the brakes work, then test-drive. Engagement of the brake may require a greater pedal stroke immediately after the brake pads have been replaced as a set. Several applications of the brake pedal will restore the normal pedal stroke.

bleed the brake again. if the pedal goes to the floor with little resistance, then the master cylinder is your problem.
the shim is to depress the noise when you applied the brake. you can skip that, if the brake works without it.