268954910-Renault-Scenic.pdf

MECHANICAL COMPONENT CONTROLS
Clutch circuit: Bleeding
37A
JH3 or JR5 or ND0 or PK4 or TL4
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.
a The hydraulic clutch system is very sensitive to contamination.
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 system
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,
Essential equipment
brake circuit bleeding device
hydraulic circuit bleed syringe
There are two types of equipment used to bleed the
clutch circuit:
a ARC50 via the brake fluid reservoir.
a Syringe via the bleed hole located on the clutch slave
cylinder.
There are two procedures used to bleed the clutch
circuit:
a If no parts of the clutch hydraulic circuit are removed:
- 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.
a If no parts of the clutch hydraulic circuit are removed:
-Only carry out the bleed operation using a new syringe
by injecting the brake fluid via the bleed hole
on the clutch slave cylinder.
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 detection
of faults and unnecessary part replacements.
Consumables required for the repair:
a Bleed the clutch circuit using approved (see Vehicle:
Parts and ingredients for the repairwork)
brake fluid (04B, consumables - products).
II - PREPARATION STAGE
a Position the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
a Remove the engine undertray.
• cloth,
• dust and particles in the air,
• etc.
Cleaning cloths.
a Use lint-free cleaning cloths (see Recommended
products for repairwork) (04B, Consumables -
Products).
Each cloth must only be used once.
37A-73