2009 RENAULT TWINGO brake fluid

37A-2
MECHANICAL COMPONENT CONTROLS
Master cylinder: Removal - Refitting
JB1 or JH1 or JH3 or JR5
37A
aRemove the clutch master cylinder supply pipe (3) .
aFit blanking plugs to the brake fluid reservoir and the
clutch master cylinder supply pipe.
aPlace a container under the master cylinder to col-
lect the brake fluid.
aRemove:
-the rigid brake pipe unions (4) on the master cylin-
der,
-the master cylinder nuts (5) on the brake servo,
-the master cylinder (6) and the brake fluid reser-
voir. JH3 or JR5
121343
121347
121346

37A-3
MECHANICAL COMPONENT CONTROLS
Master cylinder: Removal - Refitting
JB1 or JH1 or JH3 or JR5
37A
aUsing the workbench, remove:
-the brake fluid reservoir bolt (7) ,
-the brake fluid reservoir.
aFit blanking plugs on the master cylinder.
REFITTING
I - REFITTING PREPARATION OPERATION
aAlways replace the master cylinder seals (8) .
aRemove the blanking plugs from the master cylin-
der.
aCarefully pre-fill the master cylinder with the recom-
mended brake fluid (see 30A, General information,
Brake fluid: Specifications, page 30A-18) .II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the brake fluid reservoir,
-the master cylinder making sure that the brake ser-
vo shaft is correctly aligned with the master cylin-
der shaft,
-the rigid brake pipe unions on the master cylinder.
aTighten to torque:
-the brake fluid reservoir bolt (4 Nm),
-the master cylinder nuts on the brake servo (25
Nm),
-the rigid brake pipe unions on the master cylin-
der (15 Nm).
aRemove the blanking plugs from the brake fluid res-
ervoir supply pipe and the clutch master cylinder.
aRefit the clutch master cylinder supply pipe.
aConnect the brake fluid level sensor connector.
III - FINAL OPERATION.
aRefit:
-the injection computer mounting,
-the injection computer (see Petrol injection com-
puter: Removal - Refitting) (17B, Petrol injection).
aFill up the brake fluid reservoir.
aBleed the braking circuit (see 30A, General infor-
mation, Braking circuit: Bleed, page 30A-4) .
aBleed the clutch circuit (see 37A, Mechanical com-
ponent controls, Clutch circuit: Bleed, page 37A-
54) .
aRefit:
-the filler cap of the brake fluid reservoir.
121345
112622
JH3 or JR5
K4M
JH3 or JR5

37A-8
MECHANICAL COMPONENT CONTROLS
Master cylinder: Removal - Refitting
RIGHT-HAND DRIVE
37A
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDrain the secondary brake fluid reservoir (15) with a
syringe.
aPlace a container under the brake master cylinder to
collect the brake fluid from the main reservoir.aRemove the supply pipe (16) from the clutch master
cylinder.
aFit blanking plugs to the brake fluid reservoir and the
clutch master cylinder supply pipe.
123854
JH3 or JR5
123849

37A-9
MECHANICAL COMPONENT CONTROLS
Master cylinder: Removal - Refitting
RIGHT-HAND DRIVE
37A
aRemove:
-the clip (17) from the reservoir connecting pipe,
-the reservoir connecting pipe (18) ,
-the rigid brake pipe unions (19) on the master cylin-
der,
-the master cylinder nuts (20) on the brake servo,
-the “master cylinder - reservoir” assembly.
aFit blanking plugs to the master cylinder, the main
brake fluid reservoir supply pipe and the brake fluid
reservoir connecting pipe.
aRemove:
-the bolt (21) from the main brake fluid reservoir,
-the main brake fluid reservoir from the master cylin-
der.
REFITTING
I - REFITTING PREPARATION OPERATION
aAlways replace the master cylinder seals (22) .
aRemove the blanking plugs from the master cylin-
der, the main brake fluid reservoir supply pipe and
the brake fluid reservoir connecting pipe.
aCarefully pre-fill the master cylinder with the recom-
mended brake fluid (see 30A, General information,
Brake fluid: Specifications, page 30A-18) .
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the brake fluid reservoir to the master cylinder,
-the "master cylinder - reservoir" assembly, aligning
the brake servo shaft with the master cylinder
shaft,
-the rigid brake pipe unions on the master cylinder.
aTighten to torque:
-the brake fluid reservoir bolt (4 Nm),
-the master cylinder bolts on the brake servo (25
Nm),
-the rigid brake pipe unions on the master cylin-
der (15 Nm).
aRefit:
-the brake fluid reservoir connecting pipe,
-the brake fluid reservoir connecting pipe clip.
123849
112622

37A-10
MECHANICAL COMPONENT CONTROLS
Master cylinder: Removal - Refitting
RIGHT-HAND DRIVE
37A
aRemove the blanking plugs from the brake fluid res-
ervoir and the clutch master cylinder supply pipe.
aRefit the clutch master cylinder supply pipe.
III - FINAL OPERATION.
aRefit:
-the timing cover,
-the bulkhead heat-resistant protectors.
aRefit the bulkhead heat-resistant protector.
aClip onto the support:
-the ABS wiring,
-the non-return valve.
aRefit the support of the non-return valve and the
ABS wiring.
aRefit:
-the fuel vapour recirculation solenoid valve sup-
port,
-the fuel vapour recirculation solenoid valve,
-the petrol vapour recirculation solenoid valve con-
nector,
-the fuel vapour recirculation solenoid valve pipes.
aRefit:
-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).aFill up the secondary brake fluid reservoir.
aBleed the brake circuit (see 30A, General informa-
tion, Braking circuit: Bleed, page 30A-4) . JH3 or JR5
K4M
D4F, and 780
D4F or D7F or K4M

37A-54
MECHANICAL COMPONENT CONTROLS
Clutch circuit: Bleed
JH3 or JR5
37A
Bleed in the event of:
-dead travel,
-pedal at mid-travel,
-pedal to the floor,
-poor gear changing.
I - PRECAUTIONS DURING REPAIR
Risks relating to contamination.
aThe hydraulic clutch system is very sensitive to con-
tamination. The risks caused by contamination are:
-impossible to change gears,
-damage to or destruction of the clutch system,
-leaks on the hydraulic circuit.
All the operations on the hydraulic clutch circuit sys-
tem must be carried out under excellent cleanliness
conditions. This ensures that no impurities enter the
hydraulic circuit during the operation.
The cleanliness principles apply to all components
of the hydraulic clutch circuit.
Items causing contamination are:
-metal or plastic swarf,
-fibres:
•cardboard,
•brushes,
•paper,
•clothing,
•cloth,
•dust and particles in the air,
•etc.
Cleaning cloths.
aUse lint-free cleaning cloths (see Products recom-
mended for the repair) (04B, Consumables - Prod-
ucts).
Each cloth must only be used once.There are two types of equipment used to bleed the
clutch circuit:
aARC50 via the brake fluid reservoir.
aSyringe via the bleed hole located on the clutch
slave cylinder.
There are two procedures used to bleed the clutch
circuit:
aIf no parts of the hydraulic clutch circuit are remo-
ved:
-Carry out the bleed operation using the ARC50 via
the brake fluid reservoir or using a new syringe via
the bleed hole located on the clutch slave cylinder.
aIf no parts of the hydraulic clutch circuit are remo-
ved:
-Only carry out the bleed operation using a new sy-
ringe by injecting the brake fluid via the bleed hole
on the clutch slave cylinder.
Consumables required for the repair:
aBleed the clutch circuit using approved (see Vehi-
cle: Parts and consumables for the repair) brake
fluid (04B, consumables - products).
II - PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove the engine undertray. Equipment required
brake circuit bleeding device
hydraulic circuit bleed syringe
Note:
-Even the tiniest air bubble in the circuit can
cause faulty operation (pedal failing to return
properly, crunching sound when changing gear,
etc.).
-Incorrect bleeding can lead to incorrect detec-
tion of faults and unnecessary part replace-
ments.

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.