2009 RENAULT TWINGO RS wheel

37A-24
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
RIGHT-HAND DRIVE
37A
aRefit:
-the brake servo non-return valve (see 37A, Me-
chanical component controls, Brake servo non-
return valve: Removal - Refitting, page 37A-11) ,
-the brake master cylinder (see 37A, Mechanical
component controls, Master cylinder: Removal
- Refitting, page 37A-1) ,
-the fuel vapour recirculation solenoid valve sup-
port,
-the fuel vapour recirculation solenoid valve,
-the fuel vapour recirculation solenoid valve pipes,
-the fuel vapour recirculation solenoid valve con-
nector,
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection),
-the front right-hand wheel (see 35A, Wheels and
tyres, Wheel: Removal - Refitting, page 35A-1) .

37A-42
MECHANICAL COMPONENT CONTROLS
Brake pedal switch: Removal - Refitting
37A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove:
-the bolts (1) of the steering wheel cover,
-the steering wheel cover (2) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the brake light switch connector (3) .
aTurn the brake light switch (4) a quarter of a turn
anti-clockwise.
aRemove the switch from the pedal assembly. Equipment required
set of feeler gauges
Diagnostic tool
WARNING
The brake pedal position switch must be replaced if
the notched segment is pulled completely out of the
switch.
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121350

37A-45
MECHANICAL COMPONENT CONTROLS
Brake pedal switch: Removal - Refitting
37A
III - CHECKING THE ELECTRICAL OPERATION OF
THE PART
aCheck that the brake light switch is operating cor-
rectly:
-depress the brake pedal to switch on the lights,
-release the brake pedal to switch off the lights.
aConnect the Diagnostic tool
aDepress the brake pedal by 10 mm.
aCheck that the first signal of the switch has not
switched (the first signal does not illuminate the
bulbs).
IV - FINAL OPERATION
aRefit:
-the steering wheel cover,
-the bolts on the steering wheel cover.

37A-48
MECHANICAL COMPONENT CONTROLS
Parking brake lever: Adjustment
37A
A poorly adjusted parking brake:
-prevents correct operation of the automatic compen-
sation system for the brake shoes,
-causes premature wear of brake shoes.
ADJUSTMENT
I - ADJUSTMENT PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) .
aApply the parking brake five times to condition the
cables for normal use.
aPut the parking brake lever into the released posi-
tion.
aCheck that the rear wheels turn freely. If they do not,
check the following components and if necessary re-
pair:
-the parking brake cables,
-the calliper piston,
-the automatic compensation system,
-calliper
aRemove the rear wheels (see 35A, Wheels and ty-
res, Wheel: Removal - Refitting, page 35A-1) .
aRemove:
-the heat shield clips (1) ,
-the heat shield (2) .II - OPERATION FOR ADJUSTMENT OF PART
CONCERNED
aLoosen the nut (2) to release the cables.
aPosition the parking brake lever at the 2nd notch.
aMove the adjustment nut until the disc or drum can
no longer be turned by hand.
aPull the brake lever several times.
aPut the parking brake lever into the released posi-
tion.
aThe disc or the drum must be able to turn freely. If
not, move the nut gradually until the disc or drum
can turn freely.
aRefit the rear wheels (see 35A, Wheels and tyres,
Wheel: Removal - Refitting, page 35A-1) .
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121334

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.

37A-61
MECHANICAL COMPONENT CONTROLS
Clutch master cylinder: Removal - Refitting
JH3
37A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (MR 411, 02A, Lifting equip-
ment).
aRemove:
-the front wheel on the driver's side (see 35A,
Wheels and tyres, Wheel: Removal - Refitting,
page 35A-1) ,
-the front wheel arch liner on the driver's side (see
Front wheel arch liner: Removal - Refitting) (MR
412, 55A, Exterior protection).
aUse a syringe to empty the brake fluid reservoir.
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aUnclip the hydraulic clutch master cylinder rod (1)
from the clutch pedal.aDisconnect the brake fluid fuel supply pipe (2) from
the hydraulic clutch master cylinder.
aInsert the blanking plugs.
aPull the clip (2) .
aDetach the end (3) of the hydraulic clutch control
pipe.
aInsert the blanking plugs.
121366
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
121340
121341