brake RENAULT TWINGO 2009 2.G Chasiss Owner's Manual

30A-18
GENERAL INFORMATION
Brake fluid: Specifications
30A
BRAKE FLUID REPLACEMENT INTERVAL
Our braking technology, and in particular the disc
brakes (hollow pistons which conduct little heat, have a
low volume of fluid in the cylinder, sliding callipers
avoiding the need for a fluid reserve in the least cooled
area of the wheel), has allowed us to prevent the risk of
« vapour lock » as far as possible, even with heavy
braking (mountainous area). However, current brake
fluids are subject to minor deterioration during the first
months of use due to slight humidity intake. This is why
it is recommended that you change the brake fluid: see
maintenance booklet for the vehicle.
1 - Topping up the level
Wear of the brake pads will result in a gradual drop in
the fluid level in the reservoir.
Do not top up the fluid, as the level will rise again when
the pads are next changed. The brake fluid level must
not fall below the minimum mark.
2 - Approved brake fluid
Mixing two incompatible brake fluids in the brake circuit
may lead to:
-serious risk of leakage due mainly to deterioration of
the cups,
-deterioration in the operation of the ESP system.
To prevent such risks, it is essential to use only brake
fluids that comply with the RENAULT standard (see
Vehicle: Parts and consumables for the repair) .

30A-19
GENERAL INFORMATION
Brake: Specifications
30A
(1) the brake discs cannot be repaired. The brake discs
must be replaced if they are excessively scratched or
worn.Full front brake discs Ventilated front brake discs
Front brake (mm)
Piston diameter 48 48 57
Disc diameter 259 259 280
Disc thickness 12 20.6 24
Minimum disc thickness
(1)10.6 17.7 21.8
Maximum disc run-out 0.03
Brake pad thickness
(including backplate)18 17.5
Minimum pad thickness
(including backplate)68.2
Rear drum brake (mm)
Slave cylinder diameter 17.5
Drum diameter 203.2
Maximum diameter of
drum wear204.45
Drum pad thickness
(including suppor t)5.5
Minimu m d ru m lining
thickness (including
mounting)2.4
Rear disc brake (mm)
Piston diameter 34
Disc diameter 240
Disc thickness 8
Minimum disc thickness
(1)7
Maximum disc run-out 0.06
Brake pad thickness
(including backplate)16
Minimum pad thickness
(including backplate)6

30A-37
GENERAL INFORMATION
Rear axle system: Tightening torque
30A
119401
109710119340
119648
No. Description Tightening torque (Nm)
(1) Rear axle bearing bolts 62
(2) Rear brake drum nut 175
(3) Rear shock absorber lower
bolt105
(4) Front stub-axle carrier bolts 53

31A-1
FRONT AXLE COMPONENTS
Front brake pads: Removal - Refitting
EQ UIPMENT LEVEL EA0 or EQUIPMENT LEVEL EA1 or EQUIPMENT LEVEL EA3 or EQUIPMENT LEVEL EA5
or EQUIPMENT LEVEL EAG or EQUIPMENT LEVEL EZ2 or EQUIPMENT LEVEL EZ4
31A
When replacing brake pads, be sure to replace the
pads on the opposite side.
REMOVAL
I - OPERATION FOR REMOVAL OF PART
CONCERNED
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) .
aSwitch off the ignition without removing the key to
keep the steering column unlocked.
aRemove the front wheels (see 35A, Wheels and ty-
res, Wheel: Removal - Refitting, page 35A-1) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the guide pin lower bolt (1) while holding
the nut (2) .aRotate the calliper upwards.
aRemove the pads (3) . Tightening torquesm
guide pin bolt34 N.m
119213
119215
119216

31A-2
FRONT AXLE COMPONENTS
Front brake pads: Removal - Refitting
EQ UIPMENT LEVEL EA0 or EQUIPMENT LEVEL EA1 or EQUIPMENT LEVEL EA3 or EQUIPMENT LEVEL EA5
or EQUIPMENT LEVEL EAG or EQUIPMENT LEVEL EZ2 or EQUIPMENT LEVEL EZ4
31A
aRemove the noise reducing fins (4) .
REFITTING
I - REFITTING PREPARATION OPERATION
aCheck the thickness of the pads (see 30A, General
information, Brake: Specifications, page 30A-19)
.
aReplace any faulty parts.
aClean:
-the calliper supports,
-the callipers.
aPush the piston.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the new noise reducing fins.
aFit the front brake pads starting from the inside.
aPivot the calliper downwards to return it to its original
position.
aRefit the new guide pin bolt.aTorque tighten the guide pin bolt (34 N.m).
III - FINAL OPERATION
aRefit the front wheels (see 35A, Wheels and tyres,
Wheel: Removal - Refitting, page 35A-1) .
119217
WARNING
In order not to damage the brake hose:
-do not tension the hose,
-do not twist the hose,
-check that there is no contact with the sur-
rounding components.
IMPORTANT
To avoid any accident, bring the pistons, brake
pads and brake discs into contact by depressing
the brake pad several times.

31A-3
FRONT AXLE COMPONENTS
Front brake pads: Removal - Refitting
EQ UIPMENT LEVEL SPORT
31A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aSet the wheels straight ahead.
aRemove the front wheels (see 35A, Wheels and ty-
res, Wheel: Removal - Refitting, page 35A-1) .II - REMOVAL OPERATION
aRemove the retaining spring (1) using a wide, flat-
blade screwdriver.
aMark the position of the cap on the base of the shock
absorber using a indelible pencil.
aUnclip the cap from the base of the shock absorber. Special tooling required
Fre. 1190-01Brake calliper piston return
tool.
Equipment required
indelible pencil
Tightening torquesm
guide pin bolts28 N.m
IMPORTANT
To avoid all risk of damage to the systems, apply
the safety and cleanliness instructions and opera-
tion recommendations before carrying out any
repair:
- (see Front axle components: Precautions for
the repair) ,
- (see Vehicle: Precautions for the repair) (01D,
Mechanical introduction).
WARNING
In order not to damage the brake hose:
-do not tension the hose,
-do not twist the hose,
-check that there is no contact with the surrounding
components.
145122

31A-4
FRONT AXLE COMPONENTS
Front brake pads: Removal - Refitting
EQ UIPMENT LEVEL SPORT
31A
aRemove:
-the guide pin bolt caps (2) ,
-the guide pin bolts.
aSuspend the brake calliper on the subframe.
aRemove the brake pads.
REFITTING
I - REFITTING PREPARATION OPERATION
aMeasure the thickness of the pads and then com-
pare them to the minimum values (see 30A, Gener-
al information, Brake: Specifications, page 30A-
19) .
aDo not allow friction materials to come into contact
with grease, oil or other lubricants and cleaning
products which are mineral oil based.
aparts always to be replaced: Front brake calliper
guide pin bolt.
aClean using a wire brush and BRAKE CLEANER
(see Vehicle: Parts and consumables for the re-
pair) (04B, Consumables - Products):
-the calliper supports,
-the callipers.aPush the piston fully into its housing using the tool
(Fre. 1190-01) part number 77 11 223 715.
145120103115

31A-5
FRONT AXLE COMPONENTS
Front brake pads: Removal - Refitting
EQ UIPMENT LEVEL SPORT
31A
II - REFITTING OPERATION
aFit the inner brake pad with the lugs (4) in the calliper
piston.
aRefit:
-the outer brake pad on the calliper mounting,
-the calliper with the inner brake pad on the calliper
mounting.
aTorque tighten the guide pin bolts (28 N.m).
aRefit:
-the guide pin caps,
-the retaining spring.
aSet the wheels straight ahead.
aClip the cap on the shock absorber base by aligning
the marks made on indelible pencil.III - FINAL OPERATION
aRefit the front wheels (see 35A, Wheels and tyres,
Wheel: Removal - Refitting, page 35A-1) .
114436
WARNING
In order not to damage the brake hose:
-do not tension the hose,
-do not twist the hose,
-check that there is no contact with the sur-
rounding components.
IMPORTANT
To avoid any accident, bring the pistons, brake
pads and brake discs into contact by depressing
the brake pad several times.

31A-6
FRONT AXLE COMPONENTS
Front brake hose: Removal - Refitting
31A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) .
aSet the wheels straight ahead.
aPosition a pedal press on the brake pedal to limit
the outflow of brake fluid.
aRemove the front wheel (see 35A, Wheels and ty-
res, Wheel: Removal - Refitting, page 35A-1) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aLoosen the hose union (1) on the rigid pipe union.
aRemove the retaining (2) fork from the hose.
aTo avoid the premature damage of the brake hose
by friction, observe the following procedure before
unclipping the hose:
aSet the wheels straight ahead.
aMark the position of the cap on the base of the shock
absorber using a permanent marker.
aUnclip the brake hose cap (3) from the shock ab-
sorber base.
aLoosen the hose union on the brake calliper.
aRemove the brake hose.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
a Equipment required
pedal press
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see Front axle components: Precautions
for the repair) .
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
135304
WARNING
In order not to damage the brake hose:
-do not tension the hose,
-do not twist the hose,
-check that there is no contact with the sur-
rounding components.

31A-7
FRONT AXLE COMPONENTS
Front brake hose: Removal - Refitting
31A
aSet the wheels straight ahead.
aRefit the brake hose at the calliper end.
aTorque tighten the brake hose (see 30A, General
information, Brake circuit: Tightening torque,
page 30A-6)
aClip the brake hose cap on to the base of the shock
absorber, aligning the marks made using a perma-
nent marker.
aRefit:
-the brake hose on the rigid pipe union,
-the hose retaining fork.
aTorque tighten the brake hose union on the rigid
pipe union. (see 30A, General information, Brake
circuit: Tightening torque, page 30A-6)
II - FINAL OPERATION
aRefit the front wheel (see 35A, Wheels and tyres,
Wheel: Removal - Refitting, page 35A-1) .
aRemove the pedal press from the brake pedal.
aBleed the brake circuit (see 30A, General informa-
tion, Braking circuit: Bleed, page 30A-4) .