RENAULT TWINGO RS 2009 2.G Chasiss Workshop Manual

37A-12
MECHANICAL COMPONENT CONTROLS
Brake servo non-return valve: Removal - Refitting
RIGHT-HAND DRIVE
37A
-the bulkhead heat-resistant protectors (5) .II - REMOVAL OPERATION FOR PART
CONCERNED
aDisconnect the non-return valve pipe:
-from the brake servo at (6) ,
-from the intake distributor at (7) .
aUnclip the non-return valve at (8) .
aRemove the non-return valve from the vehicle.
123850
123867

37A-13
MECHANICAL COMPONENT CONTROLS
Brake servo non-return valve: Removal - Refitting
RIGHT-HAND DRIVE
37A
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the non-return valve.
aClip on the non-return valve.
aConnect the non-return valve pipe:
-to the brake servo,
-to the intake distributor.
II - FINAL OPERATION.
aRefit:
-the bulkhead heat-resistant protectors,
-the bulkhead heat-resistant protector nuts,
-the bulkhead heat-resistant protector bolts,
-the upstream oxygen sensor (see Oxygen sen-
sors: Removal - Refitting) .
aRefit:
-the bulkhead heat-resistant protector,
-the bulkhead heat-resistant protector bolts.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (MR 412, 56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (MR 412, 56A, Exterior
equipment),
-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (MR 412,
55A, Exterior protection),
-the front right-hand wheel (see 35A, Wheels and
tyres, Wheel: Removal - Refitting, page 35A-1) . D4F, and 780
D4F or D7F

37A-14
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
JB1 or JH1 or JH3 or JR5, and LEFT-HAND DRIVE
37A
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 gearbox computer (see Sequential
gearbox converter: Removal - Refitting) (21B,
Sequential gearbox).
aRemove the battery tray (see Battery tray: Remov-
al - Refitting) (80A, Battery).
aRemove the petrol injection computer (see Petrol
injection computer: Removal - Refitting) (17B,
Petrol injection).
aRemove the diesel injection computer (see Diesel
injection computer: Removal - Refitting) (13B,
Diesel injection).
aRemove:
-the injection computer mounting bolts (1) ,
-the engine harness bracket nut (2) ,
-the injection computer mounting,
-the master cylinder (see 37A, Mechanical compo-
nent controls, Master cylinder: Removal - Refit-
ting, page 37A-1) . Tightening torquesm
brake servo nuts25 Nm
JH1
D4F or D7F or K4M
K9K
122323
122322

37A-15
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
JB1 or JH1 or JH3 or JR5, and LEFT-HAND DRIVE
37A
aDisconnect the brake servo non-return valve.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the connecting shaft (3) between the brake
pedal and the brake servo rod, after tilting the con-
necting shaft upwards, move the ring with a flat-
blade screwdriver.
121348
121352
109205

37A-16
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
JB1 or JH1 or JH3 or JR5, and LEFT-HAND DRIVE
37A
aRemove:
-the nuts (4) from the brake servo on the « brake
pedal - clutch » assembly,
-the brake servo.aRemove:
-the brake servo nuts (4) from the brake pedal plate,
-the brake servo.
REFITTING
I - REFITTING PREPARATION OPERATION
aThe shaft connecting the brake servo pushrod and
the brake pedal must be replaced every time it is re-
moved. JB1 or JH3 or JR5
121353
JH1
122227

37A-17
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
JB1 or JH1 or JH3 or JR5, and LEFT-HAND DRIVE
37A
aCheck that the brake servo seal (5) is in place and
replace the seal if it is faulty.
aBefore refitting, check the dimension L = 153.3 mm.
aIf the dimension is not correct, replace the brake ser-
vo.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the brake servo,
-the brake servo nuts (3) .aTorque tighten the brake servo nuts (25 Nm).
aRefit the new connecting shaft (3) between the
brake pedal and the brake servo rod from right to left
and from top to bottom.
III - FINAL OPERATION.
aRefit:
-the non-return valve on the brake servo,
-the master cylinder (see 37A, Mechanical compo-
nent controls, Master cylinder: Removal - Refit-
ting, page 37A-1) ,
-the injection computer mounting,
-the engine wiring bracket.
aRefit the petrol injection computer (see Petrol injec-
tion computer: Removal - Refitting) (17B, Petrol
injection).
aRefit the diesel injection computer (see Diesel in-
jection computer: Removal - Refitting) (13B, Die-
sel injection).
109206
91101-1
109205
D4F or D7F or K4M
K9K

37A-18
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
JB1 or JH1 or JH3 or JR5, and LEFT-HAND DRIVE
37A
aRefit the battery tray (see Battery tray: Removal -
Refitting) (80A, Battery).
aRefit the gearbox computer (see Sequential gear-
box converter: Removal - Refitting) (21B, Se-
quential gearbox).
aRefit the battery (see Battery: Removal - Refitting)
(80A, Battery). JH1

37A-19
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
RIGHT-HAND DRIVE
37A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove:
-the front right-hand wheel (see 35A, Wheels and
tyres, Wheel: Removal - Refitting, page 35A-1) ,
-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment).aRemove:
-the fuel vapour recirculation solenoid valve pipes
(1) ,
-the fuel vapour recirculation solenoid valve con-
nector (2) ,
-the fuel vapour recirculation solenoid valve (3) ,
-the fuel vapour recirculation solenoid valve support
bolt (4) ,
-the fuel vapour recirculation solenoid valve support
(5) ,
-the brake master cylinder (see 37A, Mechanical
component controls, Master cylinder: Removal
- Refitting, page 37A-1) ,
-the brake servo non-return valve (see 37A, Me-
chanical component controls, Brake servo non-
return valve: Removal - Refitting, page 37A-11) .
aRemove the ignition coil (see Coils: Removal - Re-
fitting) (17A, Ignition). Special tooling required
Mot. 1672Low er engine support.
Equipment required
refrigerant charging station
Tightening torquesm
“brake - clutch pedal”
assembly nuts21 Nm
brake servo nuts21 Nm
123852
D4F or D7F

37A-20
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
RIGHT-HAND DRIVE
37A
aDrain the refrigerant circuit using a refrigerant
charging station (see Refrigerant circuit: Drain-
ing - Filling) (62A, Air conditioning).
aRemove the "dehydrator reservoir - expansion
valve" connecting pipe (see Dehydrator reservoir -
expansion valve connecting pipe: Removal - Re-
fitting) (62A, Air conditioning).
aRemove:
-the air filter (see Air filter: Removal - Refitting)
(12A, Fuel mixture),
-the bolts (6) of the air filter unit heat-resistant pro-
tector,
-the air filter unit heat-resistant protector (7) .
aRemove:
-the rear suspended engine mounting (see Lower
engine tie-bar: Removal - Refitting) (19D, En-
gine mounting),-the right-hand suspended engine mounting (see
Right-hand suspended engine mounting: Re-
moval - Refitting) (19D, Engine mounting).
aRemove the catalytic converter (see Catalytic con-
verter: Removal - Refitting) (19B, Exhaust).
aRemove the exhaust manifold (see Exhaust mani-
fold: Removal - Refitting) (12A, Fuel mixture). AIR CONDITIONING or CLIMATE CONTROL
D7F
123868
D4F
D4F, and 780
K4M

37A-21
MECHANICAL COMPONENT CONTROLS
Brake servo: Removal - Refitting
RIGHT-HAND DRIVE
37A
aRemove:
-the clutch master cylinder rod (8) from the clutch
pedal,
-the clutch master cylinder support bolts (9) ,
-the clutch master cylinder support (10) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the dual safety connecting shaft (11) between the
brake servo pushrod and the brake pedal; after tilt-
ing the connecting shaft upwards, move the ring
using a flat screwdriver,
-the brake servo nuts (12) .
aUndo the “brake - clutch pedal” assembly nuts (13)
as far as possible.
aMove the (14) “brake - clutch pedal” assembly away
from the bulkhead. JH3 or JR5
123905
123904
123860
109205