Removing
Unhook the cover of the parking brake lever and unscrew it up through the handle.
Loosen the parking brake cable adjusting nut.
Mark the position of the rear wheels on the hubs, so that you can then install the wheels in their original positions. Loosen the wheel nuts with the vehicle on the ground. Raise and support the vehicle at the rear and remove the rear wheels.
Ford Fiesta/Mazda 121
Press the hub cap, why use
Caution: Be careful not to damage the cap. A bent or deformed cap can allow water to enter the wheel bearing, causing it to fail in a short time. Therefore, a damaged cap must always be replaced.
Precautions: The hub nut is over-tightened. Therefore, when loosening it, keep the key horizontally so that the car does not slide off the stands.
Loosen the hub nut.
Remove brake drum with hub and wheel bearing.
Ford KA
Remove the four bolts securing the rear hub/brake drum assembly from the axle flange on the rear wheel trailing arm.
Carefully pull the hub/drum assembly off the brake shoes.
Press the two brake pad retaining springs down with a screwdriver.
Depress both brake pads from the wheel brake cylinder and remove them without damaging the dust caps.
Caution: When removing the shoes from the brake wheel cylinder, make sure that the pistons of the cylinder do not pull out. If necessary, put a rubber ring over the pistons to secure them.
Remove the brake pads from the bottom of the supports.
Swing the brake pads down.
Pull back the rear brake pad (arrow 1).
Unhook the parking brake cable (2) from the brake lever.
Attention: Before removing the return springs, it is recommended to mark the position of the return springs and the push rods to facilitate installation.
Unhook the top (2) and bottom (1) return springs with pliers.
Remove the front brake pad from the push rod (arrow 1). At the same time, turn the adjusting gear so that the pawl of the brake shoe is released.
Unhook the push rod from the rear brake shoe by turning the push rod 90° (arrow 1).
Unhook the pressure rod retaining spring.
Check if the outside of the wheel brake cylinder is wet. Slightly pull back the dust cap (2) and check for moisture behind the dust cap.
Caution: The pistons must not come out when doing this.
If necessary, replace the wheel brake cylinder.
Installation
Always replace all four brake pads at the same time and use pads from the same manufacturer. Blow out the brake drum and brake mount with compressed air or clean with alcohol.
Caution: Do not breathe harmful dust. When the brake pads are removed, do not press the brake pedal, otherwise the pistons will pop out of the brake cylinders. If the brake cylinder is wet with brake fluid, it must be replaced.
Check the working surface of the brake drum for scratches with your finger. Replace damaged drums, both at the same time.
Clean the six contact surfaces between the pads and the brake plate and lubricate them with a thin layer of heat-resistant grease before installation. If necessary, pre-clean these places with a soft metal brush.
Lubricate the adjusting lever, ratchet and parking brake intermediate lever at the mounting points with heat-resistant grease and attach the parts.
Assemble the brake pads and pressure rod and attach the mounting springs. Make sure that the adjusting device is in the rearmost position. To do this, turn the adjusting gear so that the brake pads are as close to each other as possible.
Attach the lower and upper return springs.
Hook the parking brake cable in the parking brake lever to the rear brake shoes.
Install the brake pads in an upward circular motion onto the wheel brake cylinder.
Attention: Do not damage the dust caps.
Insert the pads at the bottom into the support.
Press the brake pads against the brake plate and, if necessary, secure them with a clamp.
Push in the rear brake shoe mounting pins and insert the clamping springs. Compress the springs and turn the pins 90°. At the same time, hold the fastening pin at the rear. Loosen the springs to fix the mounting pin.
If used, remove spring.
If installed, remove the rubber ring from the wheel brake cylinder.
Install the brake drum.
Note: If the brake drum does not fit on the brake shoes, adjust the automatic adjustment device again. To do this, press the ratchet lever with a screwdriver, if necessary, unhook the spring securing the ratchet lever and attach it after adjustment.
Ford Fiesta/Mazda 121
Install new hub nut and tighten slowly. At the same time, turn the brake drum so that it does not pinch.
Tighten the hub nut to 270 Nm.
Check tightening torque. To do this, loosen the hub nut two turns and tighten it again to 270 Nm. At the same time, rotate the hub.
Attention: After tightening, the hub nut must not be unscrewed or it must be replaced.
Carefully hammer the protective cap with a suitable pipe (1). The inner diameter of the pipe must rest against the edge of the cap. If the cap is even slightly deformed, it must be replaced.
Ford KA
Tighten the four bolts of the rear hub/brake drum assembly to 70 Nm.
Install the rear wheels in accordance with the marks made during removal, after lightly lubricating the centering hole of the disc with grease. Do not lubricate the threads of the wheel studs. Tighten the wheel nuts. Lower the vehicle and tighten the wheel nuts crosswise to 90 Nm.
Depress the brake pedal several times to center the brake pads.
Adjust parking brake.
Put the cover on the parking brake lever and secure it.