We'll tell you about the signs of brake wear, how to replace the rear pads of a Renault Duster, how to tighten the Duster handbrake and other nuances of the braking system.
Signs of Drum Pad Wear
Symptoms indicating that the rear pads in the Duster are worn out are as follows:
- The working stroke of the brake pedal increases ; for effective braking you have to press the pedal twice. This is especially noticeable when the car is moving backwards.
- The braking distance is extended.
- When the pad comes into contact with the drum , a loud metal grinding sound is heard.
- When braking, a noticeable vibration is transmitted to the foot.
- The car stops jerkily.
Although drum brakes are subject to less load than the front wheels, they are also subject to wear. The parts of the assembly are structurally protected by a drum bowl, but pervasive dampness and chemicals from winter roads gradually destroy the metal.
In addition to the pads and drum, cylinder cuffs made of rubber also fail.
As a result of their wear, technical fluid leaks and air enters the circuit.
Failed cylinder cuffs
Ineffective operation of the Duster handbrake is also a sign of wear on the drum linings.
All these factors make braking difficult . In addition, a defect in the springs often appears over time, causing the linings to gradually move apart. This leads to corrosion and poor performance. This means that the rear brake pads will have to be replaced with intact ones.
Maintenance schedule Duster 1st generation with spare parts articles in this material.
Signs you need to replace your brake pads
The main signs of friction lining wear:
- reduction in the volume of working fluid in the compensation tank in the absence of leaks;
- reduction in the efficiency of mechanisms when the pedal is suddenly applied;
- presence of extraneous sounds when using the brakes.
The manufacturer does not regulate the service life of brake linings, since the wear rate of the material depends on operating conditions and driving style.
Some cars are equipped with an ESP system that stabilizes the trajectory by braking the wheels. The operation of electronics additionally loads the mechanisms and accelerates wear of the pads. The machine manufacturer recommends installing new parts with a remaining friction layer thickness of 2 mm. The service life of parts, according to owners, ranges from 40 to 80 thousand km.
Renault Duster rear brake pads
The design features of the drums for all-wheel drive and front-wheel drive Renault Dusters determine the differences in the rear linings for different modifications of cars. The drum size is 228 by 40 mm , the minimum permissible thickness of the Duster rear pads (pads with base) is 3.5 mm, and the normal thickness is 4.9 mm .
Original – 7701210109
The article number of the original pads for Duster is 7701210109 (2x4) and 440607493R (4x4) , they are produced under the Ferodo . But analogues can also be used to replace worn parts. We list them for two options: 2x4 – 4x4.
Brand // Article // Price (rub.):
- REMSA 3.7 // 423700 – 415200 //813 – 810.
- LPR 3.4 // 9890 – 1131 // 1 208 – 1 773.
- MEYLE 4.2 // 16145330016 – 16145330012 // 1 206 – 1 250.
- TRW 3.5 // GS-8780 – GS-8455 // 1 250 – 1 250.
- NIBK 3.6 // FN-43551 – ABS-8455 // 1 400 – 1 200.
- BREMBO 3.5 // S-68546 – S-68525 // 1 641 – 1 300.
- ATE 3.9 // 3013704962 – 986487774 // 2 650 – 2 063.
- GIRLING 4.1 // 5187809 – 5184554 // 1 827 – 2 123.
- HELLA_PAGID 3.5 // 8-DB-355000301 – 986487774 // 2 235 – 2 100.
BREMBO 3.5 // S-68546
A section dedicated to the maintenance and repair of the 1st generation Duster can be found at this link.
Malfunctions that may require removal of the brake drum
There are several reasons why it is necessary to remove brake drums:
- Replacement when a fault is detected
- Replacement when the working plane wears out
- Replacing brake pads
- Replacing working cylinders
- Monitoring the condition of the braking mechanisms
The brake drum is cracked and urgently needs to be replaced.
Now it’s worth considering the procedure for removing brake drums for a specific Renault model.
Procedure for replacing rear pads on Renault Duster
To open the Duster brake drum and replace the corresponding rear wheel assembly, prepare:
- wheel bolt wrench,
- plain & sliding pliers,
- flat screwdriver.
It's time to change the rear pads when:
- thinning of the linings,
- oiliness of the linings,
- their poor connection with the base,
- chips or deep scratches.
For all-wheel drive or front-wheel drive Dusters, the tension springs in the mechanism are different, as is the release lever of the handbrake , but the internal minimum diameter of the drum is the same. For an all-wheel drive Duster, the springs are located outside the pads; it is better to remove them before starting work.
Warning! Do not use mineral solvents, incl. gasoline or diesel fuel.
Pads should always be replaced in pairs.
You will find a review of the engines of the French-Romanian crossover in this material.
Removing the rear drum of an all-wheel drive crossover
Before replacing the rear pads, you must first remove the ratchet mechanism. It is pryed with a screwdriver through the hub hole, and the length of the spacer bar is reduced . Next, the adjusting screw at the handbrake cable tensioner is unscrewed. To do this, you need to lower the handbrake all the way and unscrew this fastener in its handle.
Link to photo source
The drum is attached to the hub with two screws . They are unscrewed with a TORX T-40 key. Where the pads separate along the perimeter of the drum, you need to tap with a hammer to remove scale and dirt. As soon as the drum moves away from the hub, pry it up with a flat screwdriver or mounting spatula and remove it.
Using a caliper, set the inner diameter of the Duster drum.
If it is less than 229.5 mm, replace the part. Replacement is carried out on two wheels at once.
Material dedicated to the pros and cons of Duster 1 can be found at this link.
Changing the pads
The procedure for replacing rear brake pads is performed in the following order:
- 1st gear is engaged , wheel chocks are placed at the front.
- The handbrake is pushed all the way down.
- The rear wheel is removed and the Renault Duster is supported.
- It is advisable to pump out the brake fluid a little from the reservoir.
- The drum is removed.
- Using a screwdriver, move the release lever of the hand brake drive, at the same time the spring on the cable is compressed.
- The cable is disconnected from the lever.
- The stand adheres , the spring cup rotates after pressing 1/4 turn.
- Cup with spring, support stand are removable.
- The second support post is also removed next overlay.
- The tension spring on top stretches a little, the toes of the pads are removed from the thrust slots in the pistons.
- The tension spiral at the bottom stretches a little, the toe of the linings is pulled out from behind the restrictive plate, the pads with springs and spacer are removed.
- As soon as the Duster pads are removed, the cylinder pistons must be temporarily fixed in any way (wire, etc.), so they don't get pushed out, the brake fluid has not leaked.
- The ends of the tension spring are unhooked from the linings , and it is removed.
- The spacer fork is removed from the groove of the block in front.
- The end of the clearance adjuster earring is detached from the front trim.
- The ends of the tensioning spiral are unhooked from the pads, the pads are separated.
- Having stretched the spiral of the spacer, the fork of the bar is removed from the groove of the rear column and disconnected from the release lever.
- The end of the tension spring is detached from the spacer bar, the bar is removed.
- The tension spring of the spacer bar is removed from the rear block.
- The brake mechanism is inspected and cleaned of dirt.
- Deformed rusty parts are replaced with new ones.
- Springs, struts, cups must be replaced every time during disassembly of the mechanism . When working, you need to make sure that the right and left parts are not mixed up.
- In places where the pads contact the shields, you need to apply a refractory lubricant . The same lubricant must be used to treat the spacer rod at the thread location.
- After releasing the pistons of the rear brake cylinder from the retainers (wire, etc.), they are supported with sliding pliers and new ones are installed .
- The drum is put in place.
- The gap between it and the linings is adjusted by squeezing the brake pedal 10-15 times . Each press should be accompanied by a click of the regulator. When the sound stops, the adjustment is complete.
- The wheel is put in place and checked how easily it rotates.
- The pads of the second wheel of the Duster are changed in the same way. Next, the parking brake is adjusted.
I wonder where and how Renault Duster is assembled, follow the link.
Replacing pads on a front-wheel drive Duster
In the modification with a 4x2 transmission, a torsion beam with modified drum mechanisms is used at the rear. We remove the wheels and bring the pads together with the tip of a screwdriver, then you need to dismantle the metal protective cap located on the hub. Under the plug there is a central nut, which is unscrewed using a 36 mm socket. The casing with the pressed-in rolling bearing is pulled off the pads. Further actions are identical to the procedure for servicing the rear brakes on a Renault Duster with all-wheel drive.
When reassembling, it is recommended to install a new central nut, which is tightened with a torque wrench to a torque of 175 N*m. The element is automatically fixed on the threaded axis; there is no need to install cotter pins or deform the edge. If there is no new nut, then the self-locking functionality is restored by deforming the existing chamfer with a hammer. The part is placed in a vice with jaws spaced 12-15 mm apart, focusing on the edge, and then the chamfer is crushed at 3 points.
How to tighten the Duster handbrake
To adjust the Duster handbrake, prepare a socket number 13. At 5-7 clicks of the ratchet mechanism, the handbrake should hold the car at an angle of 25 degrees. If it cannot cope with this task, then its drive needs to be adjusted from inside the cabin. To adjust the Duster hand brake:
- The tunnel lining is being tightened.
- The plug on the lever is thrown forward , opening access to the adjustment unit.
- By moving the adjusting nut , ensure that the lever moves 5-7 clicks.
- After making several such full strokes of the lever , it is lowered all the way.
- The rear of the car is lifted with a jack , the rear wheels are turned by hand. If they spin evenly, then everything is fine. Otherwise, the handbrake or brake mechanisms require repair.
- plug for the adjustment unit and the tunnel are put in place .
Material about errors and diagnostics of the French-Romanian crossover in this material.
Replacement schedule - at how many kilometers to change
According to statistics, car owners encounter this problem every 40,000-80,000 km. This frequency suggests that after this distance has passed, it is better to diagnose parts for wear. And if any discrepancies are found, immediately replace the spare parts. The malfunction may be detected earlier. The driver should be alerted by the corresponding indicator on the dashboard or a previously uncharacteristic sound. If such symptoms appear, it is necessary to diagnose the system for damage earlier.
Replacing the Duster handbrake cable
Duster hand brake cables are replaced if they are so stretched that it is impossible to adjust them; in case of mechanical damage or when the mobility of the rear cables inside their sheaths is lost.
Article: NK 9039148
You will need pliers and a number 13 wrench.
The work is done this way:
- The tension of the handbrake cables is completely released ; to do this, unscrew the adjusting nut completely.
- The drum is removed.
- The expansion lever is moved forward with a screwdriver , while the spiral is compressed.
- The cable is disconnected from the release lever.
- For an all-wheel drive Renault Duster, you need to remove the rear block, use pliers to press the cable spring forward , after which you can disconnect the end of the harness from the release lever.
- The tendrils of the shell latch are compressed , after which the cable is removed from the hole in the shield.
- The drive is removed from the holder located on the lever.
- The casing is pulled out of the holder on the gas tank.
- The cable is removed from the hole in the suspension beam arm fastener.
- The shell is pulled out from the body holders. The all-wheel drive Renault Duster has only one such holder.
- The harness is pulled into the passenger compartment , disconnected from the equalizer after its tip is removed from the equalizer, and then completely pulled out through the body hole from below.
- After replacing the Duster handbrake cable, all removed parts are installed in the reverse order.
Changing the oil in a Renault Duster manual transmission is described in detail in this text.
Changing the front cable
To replace the front handbrake cable, you need:
- Release the tension completely by unscrewing the adjusting nut.
- The cable ends are removed from the grooves of the equalizer, then the parts are separated.
- At the back of the lever, the floor mat is cut and its parts are moved to the side. This opens the lower part of the handbrake lever without removing the front seats. This cut will then be covered with a floor tunnel.
- The adjusting nut is unscrewed from the thread of the tip of the harness, after which it is pulled back and removed together with the equalizer.
- Reassembly is in progress.
The final stage of replacing the Duster handbrake cable is setting up the drive.
Review of the Duster automatic transmission in this material.
Step-by-step instructions for all-wheel drive cars
The linings are replaced as a set; it is prohibited to use elements with different thicknesses of the friction layer. If there is uneven wear, the car may move to the side when braking.
Before changing the pads, check the amount of fluid in the reservoir. The level is brought to the Max mark (for example, using a rubber syringe or a medical syringe). When installing new linings, excess fluid may leak into the engine compartment.
Algorithm of actions when replacing pads:
- Place the car on a level surface and turn off the engine.
- Secure the vehicle with wheel chocks and release the parking brake lever down.
- Raise the body with a jack and install a steel safety stand under the threshold.
- Unscrew the bolts and remove the wheel from the hub.
- Push the pads toward the center using a flathead screwdriver, which is inserted into the drum through the holes for the wheel bolts. The automatic clearance adjustment mechanism includes a spacer insert with a ratchet wheel. The tip of the screwdriver moves from bottom to top, reducing the length of the bar and moving the lining away from the working surface of the brake mechanism. The operation of the adjustment unit is shown in a video filmed by the owners of a Renault Duster.
- Using a Torx 40 socket, unscrew the 2 screws located on the front of the drum.
- After the bolts are unscrewed, you need to pull the metal casing towards you. If removing the part is difficult, then it is necessary to additionally bring the pads together. After removing the cover, it is strictly forbidden to press the brake pedal, since the pistons will be squeezed out of the brake cylinder.
- Use the tip of a screwdriver or the jaws of pliers to unfasten the tip of the upper spring from the metal frame of the front pad.
- Remove the opposite hook of the spring from the hole in the rear cover.
- Remove the lower spring in the same way.
- Remove the additional elastic element that maintains the gap between the friction lining and the working surface of the drum.
- Press in and use pliers to turn the stamped washer that holds the trim on the support rod.
- Pull out the rod from the opposite side of the drum mechanism.
- Remove the front trim retainer using a similar method.
- Move the rear block away from the shield, which will allow you to remove the tip of the cable going to the handbrake lever.
- Remove the block and spring installed on the metal end of the cable.
- Remove the front block, which is removed along with the spacer plate and adjustment mechanism.
Mechanism assembly
The springs and position adjuster are cleaned of dust; damaged parts must be replaced with elements from the repair kit. The washed screw mechanism and ratchet are coated with a layer of lubricant that is resistant to high temperatures. When reassembling the strip, take into account the multi-directional threads in the left and right holes. The regulator is mounted on the front pad, which is secured with a support rod. The rear block is fixed on the cable, and then the clamp and adjusting springs are installed.
A layer of dust (from wear of the linings and metal surface) is removed from the surface of the casing with a steel brush; if the height of the side exceeds 2-3 mm, then it is recommended to replace the part. After assembling the unit, the position of the pads is adjusted.
To adjust, you need to press the brake pedal, and then raise the parking brake lever all the way 4-5 times (with the ratchet button pressed). With each lift, a ratchet is activated, which moves the pads towards the working surface.
The correctness of the setting is checked by the number of clicks; turning the wheel by 7-8 teeth is considered the norm. The adjustment stops when the clicking in the mechanisms stops. Then the level of working fluid in the tank is checked, and if the volume decreases, topping up is done.
