2009 RENAULT TWINGO RS brake

38C-12
ANTI-LOCK BRAKING SYSTEM
Hydraulic brake unit: Removal - Refitting
RIGHT-HAND DRIVE
38C
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove the battery (see Battery: Removal - Refit-
ting) (80A, Battery).aRemove:
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the battery tray (see Battery tray: Removal - Re-
fitting) (80A, Battery),
-the bolts (1) from the secondary brake fluid reser-
voir.
aMove aside the secondary brake fluid reservoir.
aRemove:
-the petrol injection computer (see Petrol injection
computer: Removal - Refitting) (17B, Petrol in-
jection),
-the computer mounting bolts,
-the computer bracket. Tightening torquesm
hydraulic unit bolts on
its inter mediate bracket8 Nm
hydraulic unit inter medi-
ate bracket bolts on the
main hydraulic unit
bracket8 Nm
hydraulic unit main
mounting bolts on the
body8 Nm
rigid brake pipe unions
on the hydraulic unit14 Nm
secondar y brake fluid
reservoir bolts8 Nm
123854
K4M

38C-13
ANTI-LOCK BRAKING SYSTEM
Hydraulic brake unit: Removal - Refitting
RIGHT-HAND DRIVE
38C
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the braking hydraulic unit connector (2) .
aRemove the unions (3) of the rigid brake pipes on
the hydraulic unit.
aFit blanking plugs to the hydraulic unit.
aRemove:
-the bolts (4) from the hydraulic unit main bracket on
the body,
-the “hydraulic unit bracket - hydraulic unit” assem-
bly.
123855
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
123856
123869

38C-14
ANTI-LOCK BRAKING SYSTEM
Hydraulic brake unit: Removal - Refitting
RIGHT-HAND DRIVE
38C
aRemove:
-the hydraulic assembly intermediate bracket bolts
(5) ,
-the “hydraulic unit intermediate bracket - hydraulic
unit” assembly (6) from the main bracket,
-the hydraulic unit bolts (7) ,
-the hydraulic unit from its intermediate bracket.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the hydraulic unit on its support.
aTorque tighten the hydraulic unit bolts on its inter-
mediate bracket (8 Nm).
aRefit the "hydraulic unit intermediate bracket - hy-
draulic unit" assembly on the main bracket.
aTorque tighten the hydraulic unit intermediate
bracket bolts on the main hydraulic unit bracket
(8 Nm).
aRefit the "hydraulic unit main bracket - hydraulic
brake unit" assembly on the body.
aTorque tighten the hydraulic unit main mounting
bolts on the body (8 Nm).
aRefit the rigid brake pipe unions on the hydraulic
unit.
aTorque tighten the rigid brake pipe unions on the
hydraulic unit (14 Nm).aConnect the braking hydraulic unit connector.
II - FINAL OPERATION.
aRefit:
-the computer bracket.
-the petrol injection computer (see Petrol injection
computer: Removal - Refitting) (17B, Petrol in-
jection).
aFit the secondary brake fluid reservoir.
aTorque tighten the secondary brake fluid reser-
voir bolts ( 8 Nm).
aRefit:
-the battery tray (see Battery tray: Removal - Re-
fitting) (80A, Battery),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment).
aRefit the battery (see Battery: Removal - Refitting)
(80A, Battery).
aBleed the brake circuit (see 30A, General informa-
tion, Braking circuit: Bleed, page 30A-4) .
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K4M

38C-21
ANTI-LOCK BRAKING SYSTEM
Braking computer: Removal - Refitting
38C
This repair method only relates to vehicles without
ESP, equipped with TEVES brand hydraulic unit.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (MR 411, 02A, Lifting equip-
ment).
aDisconnect the battery (see Battery: Removal - Re-
fitting) (MR 411, 80A, Battery).
aRemove the entire hydraulic unit (see 38C, Anti-
lock braking system, Hydraulic brake unit: Re-
moval - Refitting, page 38C-2) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the braking computer bolts (1) on the hydraulic unit,
-the braking computer (2) .
REFITTING
I - REFITTING PREPARATION OPERATION
aDo not clean the pressure modulation unit (3) . Special tooling required
Mot. 1608Torque screwdriver 1 to 6.6
N.m.
Equipment required
Diagnostic tool
Tightening torquesm
braking computer bolts3 Nm
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
121457
19113

38C-22
ANTI-LOCK BRAKING SYSTEM
Braking computer: Removal - Refitting
38C
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the braking computer (2) , holding it by its edge.
aRefit the braking computer bolts on the pressure
modulation unit.
aTorque tighten the braking computer bolts (3 Nm)
using the (Mot. 1608).
III - FINAL OPERATION.
aRefit the entire hydraulic unit (see 38C, Anti-lock
braking system, Hydraulic brake unit: Removal -
Refitting, page 38C-2) .
aConnect the battery (see Battery: Removal - Refit-
ting) (MR 411, 80A, Battery).
aBleed the braking circuit (see 30A, General infor-
mation, Braking circuit: Bleed, page 30A-4) .
aConfigure the tachometric index using the Diagnos-
tic tool (see Fault finding - Replacement of com-
ponents) (MR 413 Fault finding, 38C, Anti-lock
braking system).
aClear any faults stored by the braking computer.
aCarry out a road test to confirm the repair.Note:
Do not try to force the braking computer into
place when refitting; it should fit in without any
resistance.
Note:
When a new braking computer is being fitted,
remember to attach the interconnection fork (4)
between the pressure modulation unit and the
braking computer.