Rear disc brakes — removal, installation, and replacement of brake pads (Peugeot Eurovans 806)

Removal and installation of rear disc brake pads is performed in the same way as for the front wheels. The only difference is that in this case you need to unscrew both guide pins of the rear wheel brake caliper, and also remove the spring located on the upper part of the caliper (see illustration 4.0).



When installing the caliper, lubricate the guide pins with Loctite protective grease. The pin tightening torque is 30 Nm.

1. Install the caliper spring into place. All recommendations related to the removal and installation of brake pads, replacement of calipers or discs of the front wheel brake mechanisms should be fully taken into account when performing similar work on the disc brake mechanisms of the rear wheels, because the procedure is the same in both cases.

Replacing brake pads

Brake shoes on both drum and disc brakes are used to stop the vehicle with the parking brake. Brake pads can be replaced, but when installing new pads you will need a caliper to measure their fit to the inside diameter of the brake disc. If this correspondence is not observed, the brake pads will not self-install on the brake disc (see illustration 4.5).





Removing the brake pads from the rear disc brakes is done in the same way as from the drum brakes, with the only difference being that it is necessary to remove the caliper and the brake disc. After disconnecting the parking brake cable from the lever (as well as on brake drum shoes) spread the brake pads apart by holding them at the bottom until the adjuster mechanism at the top of the pads can be removed. At the top of the pads there is a release bar that can be disconnected along with the brake adjustment mechanism. When disassembling the rear disc brake mechanism, mark or remember the mounting position of the parts in order to install them correctly during assembly.

Installation of disc brake mechanism components is carried out in the reverse order of disassembly.

2. Install the rear brake adjuster between the top of both brake pads so that the adjusting gear fits into the groove on the rear brake pad (see illustration).

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3. Install the expansion bar. The corresponding forks on both sides of the bar are installed in the recesses on both brake pads (see illustration 4.2).

All subsequent work is carried out in the reverse order of removal. After installation, the brake pads should be adjusted. The parking brake also needs to be adjusted.

Adjusting the position of the brake pads

When it comes to adjusting the brake pads, a distinction must be made between actually moving the pads and adjusting the tension of the parking brake cables (see the relevant chapter).

4. Make sure the parking brake cable is completely loose.

5. Measure the inner diameter A of the brake disc with a caliper and record the obtained value. Do the same with the brake disc of the second wheel (see illustration).

6. Use a caliper to measure the diameter of the circle formed by the installed brake pads (see illustration). The caliper is installed at the points that form the maximum diameter.





7. Rotate the adjusting gear 2 (see illustration 4.7), install the brake pads so that the diameter of the circle they form is 0.6 mm smaller than the inner diameter A (see illustration 4.5).


8. Repeat the above measurements with the brake mechanism of the second rear wheel. The diameter size A on the brake disc of the second wheel must be the same. However, if the disk has been modified, the internal diameter value will be slightly larger.

9. Install the brake disc and tighten its mounting bolt to a torque of 25 Nm.

10. Adjust the parking brake (see the relevant chapter).