Renault Clio: Brake compensator: Check

Renault Clio III (2005-2013) Service Manual / Chassis / Mechanical Component Controls / Brake compensator: Check

WITHOUT ANTI-LOCK BRAKING SYSTEM

CHECK

• Position the vehicle on a four-post lift equipped with an intermediate lifting system (see Vehicle: Towing and lifting) (MR 392, 02A, Lifting).

I - CHECKING THE DIMENSION OF THE BRAKING COMPENSATOR ROD IN THE REBOUND POSITION (WHEELS SUSPENDED)

• Raise the vehicle using the intermediate lift.

• Check the compensator rod dimension (X1).

  The dimension should be 155 mm.

• The compensator is set in the factory, therefore the rod dimension should be correct.

  If this is not the case, the compensator is either:

  • not adjusted: adjust it,
  • damaged: replace the component (see 37A, Mechanical component controls, Brake compensator: Removal - Refitting, 37A-81)

II - ADJUSTING THE ROD DIMENSION IN THE REBOUND POSITION (WHEELS SUSPENDED)

• Loosen the adjusting screw (1).
• Adjust to the dimension of 155 mm.
• Torque tighten the adjusting screw (12 Nm).

III - CHECKING THE OUTPUT PRESSURE

• Lower the intermediate lift so that the dimension of the (X2) compensator rod is equal to 142 mm.

WARNING

Prepare for the flow of fluid, and protect the surrounding components.

1 - Checking the output pressure for an input pressure (PE) = 60 bar

• Fit the pressure gauges of the (Fre. 1085-01) in acccordance with the diagram I.
• Bleed the pressure gauges using the brake circuit bleeding device by opening the pressure gauge bleed screws.
• Depress the brake pedal until the value PE = 60 bar is obtained on the front pressure gauge.
• Read the value on the rear pressure gauge PS1.
• Position the pressure gauges in accordance with diagram II.
• Bleed the pressure gauges using the brake circuit bleeding device by opening the pressure gauge bleed screws.
• Depress the brake pedal until the value PE = 60 bar is obtained on the front pressure gauge.
• Read the value on the rear pressure gauge PS2
• Check the differences in pressure at the rear brake output, PS1 - PS2 ≤ 4 bar.
• Check the value of Pm :
  Pm = (PS1 + PS2) / 2
  Pm = 28 +- 4 bar

2 - Checking the output pressure for an input pressure (PE) = 100 bar

• Depress the brake pedal until the value PE = 100 bar is obtained on the front pressure gauge.
• Read the value on the rear pressure gauge PS2.
• Position the pressure gauges in accordance with diagram I.
• Bleed the pressure gauges using the brake circuit bleeding device by opening the pressure gauge bleed screws.
• Depress the brake pedal until the value PE = 100 bar is obtained on the front pressure gauge.
• Read the value on the rear pressure gauge PS1'.
• Check the differences in pressure at the rear brake output, PS1' - PS2' ≤ 4 bar.
• Check the value of Pm' :
  Pm = (PS1' + PS2') / 2
  Pm = 28 +- 4 bar

3 - Checking the output pressure values

• PS1 for PE = 60 bar
  PS1' for PE = 100 bar
  PS1 - PS1' = 6 +- 1 bar
• PS2 for PE = 60 bar
  PS2' for PE = 100 bar
  PS2 - PS2' = 6 +- 1 bar

4 - Checking the output pressures by compressing the spring by 5 mm

• Compress the brake limiter spring by 5 mm (X3).
• Depress the brake pedal until the value PE = 100 bar is obtained on the front pressure gauge.
• Read the value on the rear pressure gauge PS1''.
• Position the pressure gauges in accordance with diagram II.
• Bleed the pressure gauges using the brake circuit bleeding device by opening the pressure gauge bleed screws.
• Depress the brake pedal until the value PE = 100 bar is obtained on the front pressure gauge.
• Read the value on the rear pressure gauge PS2''.
• Check the differences in pressure at the rear brake output, PS1'' - PS2'' ≤ 4 bar.
• Check the value of Pm :
  Pm = (PS1'' + PS2'') / 2
  Pm = 28 +- 4 bar

5 - Checking value D'

• D' = 20.6 +- 2 bar
  D'1 = PS1'' - PS1
  D'2 = PS2'' - PS2

Brake compensator: Adjustment

WITHOUT ANTI-LOCK BRAKING SYSTEM

ADJUSTMENT

• Loosen the bolt (1)
• Adjust the rod dimension to the rebound position value (wheels suspended) of 155 mm.
• Torque tighten the adjusting screw (12 Nm).

Note: When adjusting the brake limiter, do not move the rod nut (3).

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