Renault Scenic 3 Chassis. Manual — part 28
37A
-
3
MECHANICAL COMPONENT CONTROLS
Master cylinder
F4R or F9Q or K4J or K4M or K9K
37A
Disconnect the electrical connector (9) from the mas-
ter cylinder reservoir.
Drain the master cylinder reservoir with a syringe.
Remove:
- the clutch master cylinder pipe (10),
- the brake pipes (11) from the master cylinder,
- the master cylinder - brake servo mounting nuts
(12),
- the « master cylinder - master cylinder reservoir »
assembly,
- the master cylinder reservoir mounting bolts (13),
- the master cylinder reservoir.
REFITTING
Clip the master cylinder reservoir onto the master cy-
linder properly.
Refit the master cylinder reservoir - master cylinder
mounting bolts.
Torque tighten the master cylinder reservoir
mounting bolts (0.85 daNm).
104087
11
10
9
13
12
101704
WARNING
Be sure to replace the master cylinder seals (14).
14
14
37A
-
4
MECHANICAL COMPONENT CONTROLS
Master cylinder
F4R or F9Q or K4J or K4M or K9K
37A
Line up the master cylinder with the brake servo so
that the pushrod goes into the master cylinder hou-
sing.
Refit the master cylinder - brake servo mounting
nuts.
Torque tighten the master cylinder - brake servo
mounting nuts (5 daNm).
Proceed in the reverse order to removal.
Torque tighten the brake pipe - master cylinder
nuts (1.7 daNm).
Bleed the braking circuit (Section General Vehicle
Information, Braking circuit bleed, page 30A-5).
Adjust the brake pedal position switch (Section Me-
chanical component controls, Brake light switch,
page 37A-24).
101711
WARNING
When refitting the master cylinder, be sure that
the cup is centred in the brake servo.
WARNING
Connect the battery; carry out the necessary pro-
gramming (Section Electrical equipment).
37A
-
5
MECHANICAL COMPONENT CONTROLS
Brake servo
F4R or F9Q or K4J or K4M or K9K
37A
REMOVAL
Remove the master cylinder (Section Mechanical
component controls, Master cylinder, page 37A-1).
Remove:
- the gearbox control ball joints (1),
- the control cables from the sheath stops
- the sheath stop support mounting bolts,
Tightening torques
m
brake servo mounting
bolts
2.1 daNm
gearbox control sheath
support mounting bolts
2.1 daNm
WARNING
Prepare for brake fluid outflow, to prevent damage
to the mechanical parts and bodywork around the
braking system.
F4R or F9Q
104086
104085
WARNING
Do not touch the gearbox control rack.
2
1
37A
-
6
MECHANICAL COMPONENT CONTROLS
Brake servo
F4R or F9Q or K4J or K4M or K9K
37A
- the sheath stop support (2).
Remove the brake servo pushrod - brake pedal con-
necting shaft from the passenger compartment side.
Remove:
- the brake servo valve (3),
- the brake servo mounting bolts (4) from the engine
compartment side,
- the brake servo.
REFITTING
Check the following dimension before refitting:
- for left-hand drive vehicles: (X1) = 163.7 mm,
- for right-hand drive vehicles: (X1) = 133.2 mm.
Proceed in the reverse order to removal.
Torque tighten:
- the brake servo mounting bolts (2.1 daNm),
- the gearbox control sheath support mounting
bolts (2.1 daNm).
Refit the master cylinder (Section Mechanical com-
ponent controls, Master cylinder, page 37A-1).
Bleed the braking circuit (Section General Vehicle
Information, Braking circuit bleed, page 30A-5).
Adjust the brake pedal position switch (Section Me-
chanical component controls, Brake light switch,
page 37A-24).
102245
104086
4
3
91101
IMPORTANT
Check that the brake servo pushrod - brake pedal
connecting shaft is locked in place.
WARNING
Connect the battery; carry out the necessary pro-
gramming (Section Electrical equipment).
X1
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