2009 RENAULT TWINGO 37A-52

Contents
37A MECHANICAL COMPONENT CONTROLS
Master cylinder: Removal -
Refitting 37A-1
Brake servo non-return
valve: Removal - Refitting 37A-11
Brake servo: Remo val -
Refitting 37A-14
Vacuum pump: Removal -
Refitting 37A-25
Pedal assembly: List and
location of components 37A-27
Accelerator pedal: Removal -
Refitting 37A-29
Brake pedal: Removal -
Refitting 37A-31
Brake pedal switch: Removal
- Refitting 37A-42
Parking br ake lever: Removal
- Refitting 37A-46
Parking brake lever:
Adjustment 37A-48
Clutch control: List and
location of components 37A-49
Clutch cable: Removal -
Refitting 37A-51
Clutch pedal switch:
Removal - Refitting 37A-52
Clutch circuit: Bleed 37A-54
Clutch master cylinder:
Removal - Refitting 37A-61
Clutch circuit: Removal -
Refitting 37A-63
Manual gear control: List and
location of components 37A-65
Gear control unit: Removal -
Refitting 37A-67
Gear control unit: Adjustment 37A-71
Parking brake cables:
Removal - Refitting 37A-74
Brake servo: Check 37A-7838C ANTI-LOCK BRAKING SYSTEM
Hydraulic brake unit: List and
location of components 38C-1
Hydraulic brake unit:
Removal - Refitting 38C-2
Front wheel speed sensor:
Removal - Refitting 38C-15
Rear wheel speed sensor :
Removal - Refitting 38C-17
Lateral acceleration and yaw
sensor: Removal - Refitting 38C-19
Braking computer: Removal -
Refitting 38C-21

37A-27
MECHANICAL COMPONENT CONTROLS
Pedal assembly: List and location of components
37A
I - LIST OF COMPONENTS
The pedal assembly consists of:
-an accelerator pedal (see 37A, Mechanical compo-
nent controls, Accelerator pedal: Removal - Refit-
ting, page 37A-29)
-a brake pedal switch (see 37A, Mechanical compo-
nent controls, Brake pedal switch: Removal - Re-
fitting, page 37A-42)
-a brake pedal (see 37A, Mechanical component
controls, Brake pedal: Removal - Refitting, page
37A-31)
-a brake - clutch pedal assembly (see 37A, Mechani-
cal component controls, Brake pedal: Removal -
Refitting, page 37A-31)
-a clutch pedal switch (see 37A, Mechanical compo-
nent controls, Clutch pedal switch: Removal - Re-
fitting, page 37A-52) II - LOCATION OF COMPONENTS
Accelerator pedal
Brake pedal switch 5-SPEED MANUAL SEQUENTIAL GEARBOX
5-SPEED MANUAL GEARBOX
CRUISE CONTROL
119134
121350

37A-39
MECHANICAL COMPONENT CONTROLS
Brake pedal: Removal - Refitting
LEFT-HAND DRIVE, and 5-SPEED MANUAL GEARBOX
37A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aMark the switch wiring routing on the pedals.
aUnclip the switch wiring from the pedal assembly.
aRemove the brake pedal switch (see 37A, Mechan-
ical component controls, Brake pedal switch:
Removal - Refitting, page 37A-42) .
aRemove the clutch pedal switch (see 37A, Mechan-
ical component controls, Clutch pedal switch:
Removal - Refitting, page 37A-52) .
II - REMOVAL OPERATION FOR THE ALUMINIUM
PEDAL PADS
aHeat the pedal pad with a heat stripper to a maxi-
mum temperature of 80˚C.
aRemove the pad using a pair of pliers.
aClean the residue of adhesive on the pedal (see
Tools for stripping very thick soft mastic: Use) .III - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the connecting shaft (1) between the brake
pedal and the brake servo pushrod:
-unlock the shaft in accordance with (2) ,
-extract the shaft in accordance with (3) .
aUnclip the clutch master cylinder (4) . Equipment required
heat str ipper
Tightening torquesm
nuts on the « brake -
clutch pedal assembly » 25 N.m
CRUISE CONTROL
EQ UIPMENT LEVEL SPORT
128482
JH3 or JR5
121366

37A-41
MECHANICAL COMPONENT CONTROLS
Brake pedal: Removal - Refitting
LEFT-HAND DRIVE, and 5-SPEED MANUAL GEARBOX
37A
III - REFITTING OPERATION FOR THE ALUMINIUM
PEDAL PADS
aCheck that the pedal is at ambient temperature.
aCheck that the surface of the pedal is clean.
aActivate the pedal bonding surface with some paper
soaked in HEPTANE.
Wipe immediately with a clean and dry cloth.
Remove the protection around the pad.aBond the pedal pad (8) to the pedal (9) by pressing
on the right-hand side.
Press the pad to ensure bonding.
IV - FINAL OPERATION
aRefit the clutch pedal switch (see 37A, Mechanical
component controls, Clutch pedal switch: Re-
moval - Refitting, page 37A-52) .
aRefit the brake pedal switch (see 37A, Mechanical
component controls, Brake pedal switch: Re-
moval - Refitting, page 37A-42)
aRefit the switch wiring on the pedals in the position
marked during the removal operation. EQ UIPMENT LEVEL SPORT
Note:
If only the pad is being replaced, allow the pedal
to cool.
Note:
The bonding area must be clean, and free from
finger marks and fabric deposits.
Note:
It is essential to activate the surface and to wipe
in the same direction: there is a risk of contami-
nating the bonding surface when wiping.
Note:
Do not use the same paper to activate the sur-
face and to wipe the surface.
Throw the paper away after each use.
135017
Note:
Respect the r ange of motion when fitting.
CRUISE CONTROL

37A-52
MECHANICAL COMPONENT CONTROLS
Clutch pedal switch: Removal - Refitting
CRUISE CONTROL, and 5-SPEED MANUAL GEARBOX
37A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the dashboard glovebox.
aDisconnect the connector (2) from the clutch pedal
switch.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aTurn the clutch pedal switch (3) a quarter of a turn
anti-clockwise
aRemove the clutch pedal switch from the pedal. Equipment required
Diagnostic tool
119506
119507
121349

37A-56
MECHANICAL COMPONENT CONTROLS
Clutch circuit: Bleed
JH3 or JR5
37A
Bleed screw with two clips.
aTo open the bleed screw, lower the clip (6) and lift
the clip (7) while pulling by one notch.
III - BLEED PROCEDURE IF NO PARTS OF THE
HYDRAULIC CIRCUIT ARE REMOVED
1 - Bleed using the ARC50.
aKeep the clutch pedal in the upper position using a
strap attached to the steering wheel to ensure conti-
nuity of the hydraulic circuit during the bleed opera-
tion.aConnect the brake circuit bleeding device (after
having received Renault approval) to the master cyl-
inder reservoir (see the instructions for the equip-
ment).
aRemove the bleed plug from the clutch slave cylin-
der.
aConnect a transparent pipe to the bleed hole running
to an empty container placed under the bleed hole.
aOpen the bleed screw.
aOpen the circuit between the bleeding device and
the brake fluid reservoir.
aLet the brake fluid run until all air bubbles have been
released.
aStop the bleeding device to dump the pressure in the
clutch circuit.
aClose the bleed screw.
aRemove the transparent pipe from the bleed hole.
aRefit the bleed plug.
aTop up the brake fluid level in the master cylinder
reservoir after disconnecting the bleed device.
aDisengage and engage the clutch quickly around
twenty times.
aCheck that the clutch system is operating correctly.
aRepeat the bleed operation if necessary.
aCheck the adjustment of the switch. (see 37A, Me-
chanical component controls, Clutch pedal
switch: Removal - Refitting, page 37A-52) (37A,
mechanical control elements).
113732
Note:
Ta k e c are not to disrupt the adjustment of the
clutch start of travel switch.

37A-57
MECHANICAL COMPONENT CONTROLS
Clutch circuit: Bleed
JH3 or JR5
37A
2 - Bleed using a new syringe.
aKeep the clutch pedal in the upper position using a
strap attached to the steering wheel to ensure conti-
nuity of the hydraulic circuit during the bleed opera-
tion.
aRemove the bleed plug from the clutch slave cylin-
der.
aConnect a transparent pipe of sufficient length to the
bleed hole (at least thirty centimetres) in order to
place it at the same height as the reservoir.
aOpen the bleed screw.
aFill the brake fluid master cylinder reservoir until
brake fluid flows out of the bleed screw.
aConnect a new hydraulic circuit bleed syringe
filled with a useful volume of 60 ml of approved
brake fluid to the end of the transparent pipe.
aSlowly inject the entire contents of the syringe into
the hydraulic clutch circuit without injecting any of
the air from the top section of the syringe.
aClose the bleed screw.
aRemove the transparent pipe from the bleed hole.
aRefit the bleed plug.
aTop up the brake fluid level in the master cylinder
reservoir.
aDisengage and engage the clutch quickly around
twenty times.
aCheck that the clutch system is operating correctly.
aRepeat the bleed operation if necessary.
aCheck the adjustment of the switch. (see 37A, Me-
chanical component controls, Clutch pedal
switch: Removal - Refitting, page 37A-52) (37A,
mechanical control elements).IV - BLEED PROCEDURE IF PARTS OF THE
HYDRAULIC CIRCUIT ARE REMOVED.
a
Note:
Take care not to disrupt the adjustment of the
clutch start of travel switch.
Note:
The transparent pipe must remain at the same
height as the master cylinder reservoir to prevent
air from entering inside the clutch circuit.
WARNING
The master cylinder pipe must be disconnected
from its take-off point on the br ake fluid reservoir,
to avoid any foreign matter penetrating inside the
hydraulic brake circuit.
WARNING
Prepare for the fl ow of fluid and protect the sur-
rounding components.
Note:
Prefill the hydraulic circuit pipe equipped with a
filter.
Position the filter head facing downwards to
ensure that it fills.

37A-59
MECHANICAL COMPONENT CONTROLS
Clutch circuit: Bleed
JH3 or JR5
37A
aPrefill the hydraulic tappet using the new syringe (by
gravity).
aRefit the part(s) concerned.V - BLEED PROCEDURE AFTER A REMOVING A
COMPONENT OF THE HYDRAULIC CIRCUIT.
aKeep the clutch pedal in the upper position using a
strap attached to the steering wheel to ensure conti-
nuity of the hydraulic circuit during the bleed opera-
tion.
aRemove the bleed plug from the clutch slave cylin-
der.
aConnect a transparent pipe of sufficient length to the
bleed hole (at least thirty centimetres) in order to
place it at the same height as the reservoir.
aOpen the bleed screw.
aFill the brake fluid master cylinder reservoir until
brake fluid flows out of the bleed screw.
aConnect a new syringe containing 60 ml of ap-
proved brake fluid to the end of the transparent pipe.
aSlowly inject the entire contents of the syringe into
the hydraulic clutch circuit without injecting any of
the air from the top section of the syringe.
aClose the bleed screw.
aRemove the transparent pipe from the bleed hole.
aRefit the bleed plug.
aTop up the brake fluid level in the master cylinder
reservoir.
aDisengage and engage the clutch quickly around
twenty times.
aCheck that the clutch system is operating correctly.
aRepeat the bleed operation if necessary.
aCheck the adjustment of the switch. (see 37A, Me-
chanical component controls, Clutch pedal
switch: Removal - Refitting, page 37A-52) (37A,
mechanical control elements).
141809
Note:
Take care not to disrupt the adjustment of the
clutch start of travel switch.
Note:
The transparent pipe must remain at the same
height as the master cylinder reser voir to prevent
air from enter ing inside the clutch circuit.