2009 RENAULT TWINGO Chasiss Workshop Manual

30A-5
GENERAL INFORMATION
Braking circuit: Bleed
30A
aConnect the brake circuit bleeding device (after
having received Renault approval) to the master cyl-
inder reservoir (see the instructions for the equip-
ment).
aPressurise the brake circuit.
aAdjust the pressure to between 1.5 bar < P < 2 bar
for 3 minutes to stabilise it in the braking circuit.
aClose the circuit between the bleed screw and brake
fluid reservoir without dumping the pressure.
aFit the bleed containers to the four bleed screws of
the callipers.
aUndo the calliper bleed screws:
-front left-hand,
-front right-hand,
-rear left-hand,
-rear right-hand.
aOpen the circuit between the bleed screw and brake
fluid reservoir and allow the liquid to run until all the
air bubbles have been released.
aTighten the bleed screws in the following order:
-front left-hand,
-front right-hand,
-rear left-hand,
-rear right-hand.
aUndo the calliper bleed screw:
-front left-hand,
-allow the fluid to run until all the air bubbles have
been released,
-tighten the bleed screw on the calliper.
aCarry out the previous operation on the callipers:
-front right-hand,
-rear left-hand,
-rear right-hand.
aClose the bleed screw to dump the pressure in the
brake circuit.aRemove the brake circuit bleeding device from
the master cylinder reservoir.
aCheck pedal travel and resistance. If it is not correct,
finish bleeding the brake circuit with the help of a se-
cond operator. Start the bleed operation by bleeding
the calliper that is the furthest away from the master
cylinder:
-hold down the brake pedal,
-open the circuit bleed screw to release the air from
the brake circuit,
-close the circuit bleed screw,
-release the brake pedal.
aTop up the brake fluid level in the reservoir, if neces-
sary. Check the sealing of the front and rear bleed
screws and ensure that the sealing covers are in
place (see 30A, General information, Brake cir-
cuit: Tightening torque, page 30A-6) .
aDuring a road test, trigger braking regulation to con-
firm that the brake pedal travel is correct.
aClean off any traces of brake fluid on the vehicle us-
ing BRAKE CLEANING PRODUCT (see Vehicle:
Parts and consumables for the repair) Note:
The circuit between the bleed screw and brake
fluid reservoir is closed in different ways depen-
ding on the type of equipment used:
-valve,
-switch.

30A-6
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
I - FRONT BRAKES
EQ UIPMENT LEVEL SPORT
146250
No. Description Tightening torque (N.m)
(1) Calliper bleed screw10
(2) Guide pin bolts28
(3) Calliper suppor t bolt100
(4) Hub nut280
(5) Brake disc bolt14
-Brake pipe union on the calliper17

30A-7
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
EQUIPMENT 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
135206
No. Description Tightening torque (N.m)
(1) Calliper bleed screw11
(2) Guide pin bolts35
(3) Calliper suppor t bolt100
(4) Hub nut280
(5) Brake disc bolt14
-Brake pipe union on the calliper17

30A-8
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
II - REAR BRAKES
EQ UIPMENT LEVEL SPORT
146249
No. Description Tightening torque (N.m)
(6) Calliper bleed screw11
(7) Guide pin bolts35
(8) Calliper suppor t bolt105
(9) Stub-axle carr ier bolt53
(10) Brake disc nut175

30A-9
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
135207
No. Description Tightening torque (N.m)
(6) Calliper bleed screw6
(7) Guide pin bolts15
109710
No. Description Tightening torque (N.m)
(9) Drum nut175

30A-10
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
III - BRAKE CONTROL
121353
121346
121347
121456

30A-11
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
121361
121360121607
No. Description Tightening
torque
(N.m)
(11) Brake servo bolts 25
(12) Master cylinder nuts 25
(13) Master cylinder outlet pipe unions 15
(14) Hydraulic unit bolt on its intermedi-
ate bracket8

30A-12
GENERAL INFORMATION
Brake circuit: Tightening torque
30A
(15) Hydraulic unit intermediate bracket
bolt on the main mounting6.5
(16) Hydraulic unit main mounting bolt
on the body8
(17) Hydraulic unit pipe unions 13
(18) Parking brake control nuts 8 No. Description Tightening
torque
(N.m)