Renew BOTH sets of rear brake shoes at the same time – NEVER renew the shoes on only one wheel, as uneven braking may result.
Chock the front wheels, slacken the rear wheel bolts, raise the rear of the vehicle and support it securely on axle stands. Fully release the handbrake, and remove the rear roadwheels.
If the original drum is to be refitted, mark the relationship between the drum and the hub. Slacken and remove the two retaining bolts and pull the drum from the hub.
If the drum is binding on the brake shoes, screw two M10 bolts into the threaded holes in the drum and progressively tighten them against the hub flange to push the drum from the hub
Use two M10 bolts to force the drum from the hub
Working carefully, and taking the necessary precautions, remove all traces of brake dust from the brake drum, backplate and shoes.
Measure the thickness of the friction material of each brake shoe at several points; if either shoe is worn at any point to 2.0 mm thickness or less, all four shoes must be renewed as a set. The shoes should also be renewed if any are fouled with hydraulic fluid, oil or grease; there is no satisfactory way of degreasing friction material, once contaminated.
If any of the brake shoes are worn unevenly, or contaminated, trace and rectify the cause before reassembly.
Note the position of each shoe, and the location of the return springs and self-adjuster mechanism to aid refitting later
Note the positions of the brake components - drivers side brake assembly shown
Depress the leading brake shoe hold-down spring clip and slide the clip out from under the pin head, while holding the pin from the rear
. Remove the pin from the rear of the backplate.
Depress the hold-down clip and slide it from place
Pull out the leading shoe a little, detach the lower return spring, pull the top of the leading shoe from the cylinder piston, then pivot the shoe upwards, remove the self-adjusting mechanism, and detach the upper return spring
Detach the lower return spring
Remove the self-adjusting mechanism ...
... and upper return spring
Remove the hold-down spring clip and pin from the trailing brake shoe, then withdraw the shoe from the backplate.
Slide the handbrake cable end out of the lever on the trailing shoe
. Remove the trailing brake shoe.
Detach the handbrake cable from the lever
Retain the wheel cylinder pistons in the wheel cylinder using a cable tie or a strong elastic band. Do not depress the brake pedal until the brakes are reassembled.
Carefully examine the self-adjuster mechanism for signs of wear or damage. Pay particular attention to the threads and the toothed adjuster wheel, and renew if necessary.
Check the condition of all return springs and renew any that show signs of distortion or other damage.
Peel back the rubber protective caps, and check the wheel cylinder for fluid leaks or other damage; check that both cylinder pistons are free to move easily.
Prior to installation, clean the backplate, and apply a thin smear of high-temperature brake grease or anti-seize compound to all those surfaces of the backplate which bear on the shoes, particularly the wheel cylinder pistons and lower pivot point. Do not allow the lubricant to foul the friction material.
Connect the handbrake cable to the lever on the trailing brake shoe, locate the trailing shoe on the backplate and secure in position with the pin and hold-down spring clip.
Fit upper brake shoe return spring, and the self-adjuster mechanism into the recess in the trailing brake shoe, then engage the leading shoe with the other end of the adjuster mechanism
Engage the self-adjusting mechanism with the trailing shoe ...
... and leading shoe
Fit the lower brake shoe return spring, engaging it with the slots in the shoes
. Remove the elastic band or cable tie from the wheel cylinder.
Refit the lower return spring
Manoeuvre the leading shoe into position and secure it with the hold-down pin and spring clip.
Turn the serrated wheel at the end of the self-adjuster mechanism, to retract the brake shoes – this will give additional clearance to allow the drum to pass over the shoes during refitting.
If a new brake drum is to be installed, use a suitable solvent to remove any preservative coating that may have been applied to its internal friction surfaces. Note that it may also be necessary to shorten the adjuster strut length, by rotating the serrated strut wheel, to allow the drum to pass over the brake shoes.
If the original drum is being refitted, align the marks made on the drum and hub before removal, then fit the drum over the hub. Refit the locating studs and tighten them securely.
Depress the footbrake repeatedly to expand the brake shoes against the drum, and ensure that normal pedal pressure is restored.
Repeat the above procedure on the remaining rear brake.
Refit the roadwheels, and lightly tighten the retaining bolts.
With the pedal released, check that the rear roadwheels can be rotated – slight dragging is acceptable, but it should be possible to turn each wheel easily.
Apply the handbrake lever and check that the rear roadwheels start to drag after one click of the ratchet mechanism, and are fully locked within 5 clicks of the ratchet.
Fully release the handbrake, and check that the rear roadwheels can again be rotated by hand.
If the handbrake does not operate as described, carry out the adjustment procedure as follows.
Carefully prise up the trim panel adjacent to the handbrake lever
Prise up the panel around the handbrake lever
Using a spanner or suitable socket, turn the adjuster nut clockwise to apply tension to the cables, or anti-clockwise to release the tension on the cables, as necessary
. Check the operation of the handbrake as described previously and repeat the adjustment procedure as required.
Handbrake adjuster nut
Lower the vehicle to the ground, and tighten the roadwheel bolts to 120 Nm (89 Ibf ft).
On completion, check the brake hydraulic fluid level in the master cylinder reservoir.
Note that new shoes will not give full braking efficiency until they have bedded-in. Be prepared for this, and avoid hard braking as far as possible for the first hundred miles or so after shoe renewal.