Attention: Be sure to replace all the pads on one axle, even if only one pad has reached the wear limit.
Remove the rear brake drum.
Mark the installation positions of the return springs, pressure rod and regulator stand (see Fig. 9.22).
Remove the front shoe mounting pin. To do this, press the pressure spring and turn the pin 90°. At the same time, hold the pin from behind with your finger, remove the spring and remove the mounting pin (see Fig. 9.23).
Remove the front (by location) brake shoe from the shoe support and disconnect the lower return spring.
Press both pads away from the wheel brake cylinder and remove them. Do not damage the dust boots. To prevent the pistons from falling out of the working brake cylinder, secure the pistons with a suitable rubber band or wire (see Fig. 9.25, 9.26).
Remove the upper tension spring from the brake shoes.
Turn the rear (by location) brake shoe 90° downwards and disconnect the handbrake cable from the intermediate lever (see Fig. 9.27, 9.28).
Disconnect the intermediate lever from the front brake shoe (see Fig. 9.29).
Clean the rear brake components. Apply a high melting point lubricant to the contact points of the pads with the brake shield (see Fig. 9.30).
Install the intermediate lever and upper return spring onto the new front (by location) brake shoe (see Fig. 9.31).
Install the second end of the upper return spring into the new rear (according to location) brake shoe, then, turning the shoe, install it onto the expansion rod (see Fig. 9.32, 9.33).
Caution The brake shoes can also be installed separately. They are secured with pins and clamping springs. The return springs must then be attached with special pliers.
Remove the rubber band securing the pistons of the working brake cylinder. Connect the handbrake cable to the intermediate lever of the rear brake shoe and install the shoe on the brake shield.
Connect the lower return spring to the rear brake shoe and check that the handbrake control lever moves freely, then install the lower part of the shoe into the shoe support. Secure the shoe with the spring and pin.
Install the front (by location) brake shoe on the shield and secure with a spring and pin.
Connect the lower return spring to the front brake shoe.
Install the upper return spring.
Install the brake drum. If necessary, set the adjuster to the extreme position again so that the brake shoes fit the pistons. To do this, press the ratchet lever with a screwdriver. If necessary, disconnect the ratchet lever spring and reconnect it after installation. Press the brake pedal several times to center the shoes and adjust their position.