2009 RENAULT TWINGO engine

37A-26
MECHANICAL COMPONENT CONTROLS
Vacuum pump: Removal - Refitting
K9K
37A
III - FINAL OPERATION.
aRefit:
-the air filter unit (see Air filter unit: Removal - Re-
fitting) (MR 411, 12A, Fuel mixture),
-the engine cover.

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-60
MECHANICAL COMPONENT CONTROLS
Clutch circuit: Bleed
JH3 or JR5
37A
VI - FINAL OPERATION
aRefit the engine undertray.
aRemove the vehicle from the two-post lift (see Vehi-
cle: Towing and lifting) (02A, Lifting equipment).

37A-80
MECHANICAL COMPONENT CONTROLS
Brake servo: Check
RIGHT-HAND DRIVE
37A
aConnect a vacuum pump to the end of the non-re-
turn valve.
aActivate the vacuum pump to obtain a vacuum of
500 mbar.
aCheck that the vacuum pressure does not drop. If it
does, the non-return valve is pierced; replace the
valve (see 37A, Mechanical component controls,
Brake servo non-return valve: Removal - Refit-
ting, page 37A-11) .
aRefit the non-return valve pipe on the intake distribu-
tor.V - CHECKING THE VACUUM PUMP
aConnect the external vacuum pump to the engine
vacuum pump.
aStart the engine.
aCheck the following values:
-550 mbar in 5 seconds for an engine speed of 700
rpm,
-700 mbar in 3 seconds and 900 mbar in 5 sec-
onds for an engine speed of 4050 rpm.
aReplace the vacuum pump if the values are different
(see 37A, Mechanical component controls, Vacu-
um pump: Removal - Refitting, page 37A-25) .
aRefit the non-return valve pipe onto the vacuum
pump.
VI - FINAL OPERATION.
aRefit:
-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) .
123907
D4F or D7F
K9K
106889

38C-9
ANTI-LOCK BRAKING SYSTEM
Hydraulic brake unit: Removal - Refitting
D4F, and 780, and LEFT-HAND DRIVE – K4M, and LEFT-HAND DRIVE
38C
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).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the hydraulic unit computer connector
(5) .
aUndo the rigid brake pipe unions (6) on the hydraulic
unit.
aInsert the blanking plugs.aUnclip the fuel pipes (7) .
aRemove the bolts (8) from the hydraulic unit main
bracket.
aRemove the rear suspended engine mounting (see
Lower engine tie-bar: Removal - Refitting) (19D,
Engine mounting).
aFit theunder the engine.
aRemove the right-hand suspended engine mounting
(see Right-hand suspended engine mounting:
Removal - Refitting) (19D, Engine mounting).
aTilt the engine towards the front of the vehicle.
aRemove the "hydraulic unit bracket - hydraulic unit"
assembly from the body. K4M, and AIR CONDITIONING or CLIMATE CON-
TROL
122386
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
122385
K4M

38C-10
ANTI-LOCK BRAKING SYSTEM
Hydraulic brake unit: Removal - Refitting
D4F, and 780, and LEFT-HAND DRIVE – K4M, and LEFT-HAND DRIVE
38C
aRemove:
-the hydraulic unit intermediate bracket bolts (10) ,
-the “intermediate bracket - hydraulic unit” assembly
from the main bracket,
-the hydraulic unit bolts,
-the hydraulic unit from its intermediate bracket.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the hydraulic unit on its intermediate bracket.
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 intermediate bracket bolts on
the hydraulic unit main bracket (8 N.m).
aRefit the "main bracket - hydraulic unit" assembly on
the body.
aRefit:
-the right-hand suspended engine mounting (see
Right-hand suspended engine mounting: Re-
moval - Refitting) (19D, Engine mounting),-the rear suspended engine mounting (see Lower
engine tie-bar: Removal - Refitting) (19D, En-
gine mounting).
aTorque tighten the hydraulic unit main mounting
bolts on the body (8 Nm).
aClip on the fuel pipes.
aRemove the blanking plugs.
aFit and tighten the rigid brake pipe unions on the hy-
draulic unit.
aTorque tighten the rigid brake pipe unions on the
hydraulic unit (13 Nm).
aConnect the hydraulic unit connector.
II - FINAL OPERATION.
aRefit the "dehydrator reservoir - expansion valve"
connecting pipe (see Dehydrator reservoir - ex-
pansion valve connecting pipe: Removal - Refit-
ting) (62A, Air conditioning).
aFill the refrigerant circuit using a refrigerant charg-
ing station (see Refrigerant circuit: Draining -
Filling) (62A, Air conditioning).
aRefit the bulkhead heat shield.
aFit the fuel vapour rebreathing solenoid valve.
aRefit the union on the fuel vapour rebreathing sole-
noid valve.
aRefit the air filter unit (see Air filter unit: Removal -
Refitting) (12A, Fuel mixture)
aRefit:
-the front wheel arch liner (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-the front passenger side wheel (see 35A, Wheels
and tyres, Wheel: Removal - Refitting, page
35A-1) .
aRemove the pedal press from the brake pedal.
121456
K4M
K4M, and AIR CONDITIONING or CLIMATE CON-
TROL
D4F, and 780