Front brake mechanisms
Characteristic | New | Minimum |
| Disc Thickness - All Models Except Scenic: |
|
|
| solid Disc Models | 12.0 mm | 10.3 mm |
| models with ventilated discs: |
|
|
| 1.6L models (engines K7M 702 and 703) | 20.0 mm | 18.3 mm |
| all other models | 20.6 mm | 19.0 mm |
| Disc Thickness - Scenic: |
|
|
| 1.4L models, as well as 1.6L models with manual transmission | 20.6 mm | 17.7 mm |
| all other models | 22.0 mm | 19.8 mm |
| Maximum disc runout | 0.07 mm | |
| Minimum brake pad thickness (base and brake lining) | Contact the Head Maintenance | |
Rear brakes
Characteristic | All models except Scenic | Scenic |
| Inner diameter of drum: |
|
|
| new | 203.2 mm | 228.5 mm |
| maximum diameter after regrinding | 204.4 mm | 229.5 mm |
| Minimum brake pad thickness (base and brake lining) | Contact the Head Maintenance | |
Tightening torques, Nm
Characteristic | Meaning |
| Bleed nipple | 6 |
| Front brake disc to hub | 14 |
| Front brake caliper: |
|
| guide pin bolts | 32 |
| Brake hose coupling | 15 |
| Brake pipe union nut | 13 |
| Master cylinder mounting nuts | 23 |
| Rear wheel hub nut | 175 |
| Wheel bolts | Contact the Head Maintenance |
| Vacuum booster unit mounting nuts | 20 |
| Wheel Speed Sensor (ABS) Mounting Bolts | 8 |
| Rear Steering Knuckle Bolts - Scenic | Contact the Head Suspension and steering |
General description
Note: Some 2.0L 16-valve Coupe models are equipped with rear disc brakes. At the time of writing, no information was available regarding these components.
The hydraulic brake system is equipped with a booster and is divided into two circuits. Each circuit controls one of the front and diagonally opposite rear brake units. The circuits are connected to a common master cylinder. Under normal circumstances, both circuits operate in unison. However, if one of the circuits fails, braking will be performed by the second circuit, on both wheels.
All models are equipped with front disc and rear drum brakes (except 2.0L 16-valve Coupe models). The front ones are equipped with sliding type calipers, driven by a cylinder with a single piston. In this case, equal pressure is applied to each of the pads. The rear drum brakes have leading and trailing pads, which are driven by a working cylinder with twin pistons. A self-adjusting regulator built into the brake unit automatically compensates for the increase in clearance caused by pad wear
A load-sensitive pressure control valve is installed in the hydraulic line of each rear brake mechanism. The valve is connected to the rear axle and adjusts the pressure in the system according to the axle load, which helps prevent the rear wheels from locking during emergency braking.
The handbrake provides application of the rear brake mechanisms by means of an independent mechanical drive.
Note: When servicing any part of the system, work carefully and methodically and maintain scrupulous cleanliness. Replace the component (together with its pair installed on the opposite side of the car), if there is any doubt about its condition. Use only genuine Renault parts or at least good quality parts. Take note of the Warnings about the dangers of asbestos dust and brake fluid given in this Chapter.