We replace the pads in the event of the maximum permissible wear of their pads or the rear wheel brake drum
The pads also need to be replaced when the pads become oily, have deep grooves and chips on them, or if the pads peel off from the base of the pads.
The brake mechanisms of the rear wheels of front-wheel drive and all-wheel drive Renault Duster vehicles are fundamentally the same design.
The difference is in the location of the return springs and the parking brake release lever.
The brake pads of all cars are replaced with the same methods described for the example of a front-wheel drive car.
However, to facilitate operation on a four-wheel drive vehicle, you can first remove the return springs, since they are located on the outer sides of the pads.
We carry out work on a flat area.
We show the replacement of pads on the left rear wheel.
Before removing the brake drum, lower the parking cable lever to the stop - the car must be disengaged.
Remove the rear wheel and securely fix the car on the factory-made support stand.
In order to remove the drum, the pads need to be brought together.
To do this, use a slotted screwdriver through the threaded hole in the hub (drum - on a 4x2 car) to rotate the ratchet nut of the mechanism for automatically adjusting the gap between the pads and the drum, reducing the length of the spacer bar.
For clarity, we show with the drum removed. We turn the ratchet nut on the left and right wheels by the teeth from the bottom up.
By car 4x4
Using a Torx t-40 wrench, unscrew the two screws securing the brake drum to the hub
Remove the brake drum
Do not press the brake pedal with the drum removed, the slave cylinder pistons may come out completely.
Pry off with a screwdriver and disengage the hook of the upper coupling spring
Remove the spring
Also remove the lower return spring
Remove the adjuster spring
Using pliers, we turn the cup of the spring of the support post of the rear pad until the groove in the cup aligns with the shank of the post.
Remove the cup with the spring and remove the support post from the hole in the brake shield.
Also remove the front shoe support
Remove the rear brake pad from the brake shield
Disconnect the end of the parking brake cable from the rear shoe lever
Remove the block and the spring of the cable end
Remove the front brake pad together with the spacer bar and separate them.
Check the technical condition of the parts and clean them.
Before installing new pads, clean the threads of the spacer tip and ratchet nut and apply a thin layer of grease to the threads.
We set the automatic gap adjustment mechanism to its original state by screwing the tip of the spacer bar into the hole of the bar with our hands (the thread on the tip of the spacer bar and the ratchet nut is right-handed).
Install new rear wheel brake pads in reverse order.
Before installing the brake drum, we clean its working surface with a metal brush from dirt and wear products of the pads.
Similarly, we replace the brake pads of the right wheel (the thread on the tip of the spacer bar and the ratchet nut is left).
To adjust the position of the brake pads, press the brake pedal several times.
Hold it down and then repeatedly raise and lower the parking brake lever (when moving the lever, keep the parking brake off button on the lever pressed all the time so that the ratchet mechanism does not work).
At the same time, clicks will be heard in the brake mechanisms of the rear wheels from the operation of the mechanism for automatically adjusting the gaps between the pads and the brake drums.
Raise and lower the parking brake lever until the clicks in the brake mechanisms stop.
Check the level of brake fluid in the reservoir of the hydraulic drive of the system and, if necessary, bring it to normal.
By car 4x2
Pry off the protective cap with a screwdriver
Remove the protective cap of the hub bearing
With a 36 socket, unscrew the hub bearing nut
Remove the brake drum assembly with bearing
Further operations for replacing pads are the same as those for a 4x4 vehicle
After installing the brake drum, tighten the hub bearing nut with a torque of 175 Nm
You need to install a new nut, but if there is none, you can use the old nut.
Spread the jaws of the vise by 10-15 mm, put the hub nut on them at an angle so that it simultaneously rests on both the edge and the base.
Cautiously strike the outer chamfer of the nut with a hammer, crushing it.
The chamfer needs to be crumpled in three places.