Renault Koleos Service Repair Manual: Valves: Adjustment

2TR

IMPORTANT To avoid all risk of damage to the systems, apply the safety and cleanliness instructions and operation recommendations before carrying out any repair.

I - PREPARATION OPERATION FOR ADJUSTING VALVE CLEARANCES

IMPORTANT To prevent the vehicle from falling, lash it to the vehicle lift using a strap.

 

IMPORTANT Wear protective gloves during the operation.
  • Position the vehicle on a two-post lift .
  • Remove:
    • the intake duct
    • the battery
    • the battery tray
    • the air filter unit
    • the engine cover
    • The air resonator on the rocker cover
    • the windscreen wiper arms
    • the scuttle panel half-grille
    • the windscreen wiper mechanism
    • the scoop under the scuttle panel grille
    • the inlet manifold
    • the engine undertray.

Engine and cylinder block assembly

  • Place the trolley jack (1) or an equivalent engine supporting tool under the cylinder block.
Note: Place a wooden block or equivalent on the support surface to ensure stability.

 

IMPORTANT To prevent any accidents, the trolley jack must only be used to lift and/or move the vehicle. The vehicle height must be maintained with axle stands which are strong enough to support the weight of the vehicle.
  • Remove the right-hand suspended engine mounting.
  • Disconnect:
    • the wiring on the right-hand engine mounting bracket,
    • the ignition coil connectors.
  • Remove:
    • the right-hand engine mounting bracket
    • the ignition coils
    • the rocker cover
    • the front right-hand wheel
    • the front right-hand wheel arch liner

II - VALVE CLEARANCE MEASUREMENT OPERATION

Engine and cylinder block assembly

  • Turn the crankshaft accessories pulley clockwise and align the TDC mark (3) and the mark (2) located on the timing cover.

Engine and cylinder block assembly

  • Check if the nose of the inlet and exhaust cams (4) of cylinder no. 1 are pointing outwards as illustrated.

    If they are not pointing outwards, turn the crankshaft accessories pulley an additional turn (360 degrees).

Engine and cylinder block assembly

  • Use a feeler gauge to measure the clearance between the valve tappet and the camshaft.
Note:

Valve clearance:

  • inlet:
    0.24~0.32 mm (cold),
    0.304~0.416 mm (hot: 80ºC).
  • exhaust:
    0.26~0.34 mm (cold),
    0.308~0.432 mm (hot: 80ºC).

Engine and cylinder block assembly

  • Measurement positions (cylinder no. 1 at TDC):
    • Cylinder no. 1: inlet and exhaust,
    • Cylinder no. 2: inlet,
    • Cylinder no. 3: exhaust.
  • Measure the valve clearance in the locations indicated by a black arrow on the diagram using a feeler gauge.

Engine and cylinder block assembly

  • Turn the crankshaft accessories pulley one turn (360º) to align the TDC mark (6) and the mark (5) located on the timing cover.

Engine and cylinder block assembly

  • Referring to the diagram, measure the valve clearance in the locations indicated by a black arrow in the diagram using a feeler gauge
  • Measurement positions (cylinder no. 4 at TDC):
    • Cylinder no. 2: exhaust,
    • Cylinder no. 3: inlet,
    • Cylinder no. 4: inlet and exhaust.

III - VALVE CLEARANCE ADJUSTMENT OPERATION

  • Engine and cylinder block assembly, Engine - gearbox assembly: Removal - Refitting.
  • Strip down the engine.
  • Remove the timing - cylinder head.
  • Adjust the valve clearance.
  • Refit the timing - cylinder head.
  • Rebuild the engine.

IV - FINAL OPERATION

  • Refit:
    • the front right-hand wheel arch liner
    • the front right-hand wheel
    • the rocker cover
    • the ignition coils
    • the right-hand engine mounting bracket.
  • Connect:
    • the ignition coil connectors,
    • the wiring on the right-hand engine mounting bracket.
  • Refit the right-hand suspended engine mounting.
  • Remove the trolley jack (1) or equivalent engine support tool from under the cylinder block.
  • Refit:
    • the engine undertray
    • the inlet manifold
    • the scoop under the scuttle panel grille
    • the windscreen wiper mechanism
    • the scuttle panel half-grille
    • the windscreen wiper arms
    • The air resonator on the rocker cover
    • the engine cover
    • the air filter unit
    • the battery tray
    • the battery
    • the inlet duct
    Flywheel: Removal - Refitting

    Top and front of engine

    See More:

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