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How to Replace timing belt on Renault Megane 3 1.9 dCi 2008-

Replacement Interval Guide

  • Renault recommend replacement every 90,000 miles or 6 years (tensioner pulley must also be replaced).
  • The previous use and service history of the vehicle must always be taken into account.

Check For Engine Damage

CAUTION: This engine has been identified as an INTERFERENCE engine in which the possibility of valve-to-piston damage in the event of a timing belt failure is MOST LIKELY to occur. A compression check of all cylinders should be performed before removing the cylinder head(s).

Repair Times – hrs

Remove & install:
Mégane III 3,50
Scénic/Grand Scénic III 3,80

Special Tools

  • Crankshaft timing pin – Renault No.Mot.1054.

Special Precautions

  • Disconnect battery earth lead.
  • DO NOT turn crankshaft or camshaft when timing belt removed.
  • Remove glow plugs to ease turning engine.
  • Turn engine in normal direction of rotation (unless otherwise stated).
  • DO NOT turn engine via camshaft or other sprockets.
  • Observe all tightening torques.
How to Replace timing belt on Renault Megane 3 1.9 dCi 2008-
How to Replace timing belt on Renault Megane 3 1.9 dCi 2008-

Removal

  1. Raise and support front of vehicle.
  2. Remove:
      • Wiper arms.
      • Plenum chamber cover.
      • Plenum chamber front panel.
      • Engine top cover.
      • RH front wheel.
      • RH inner wing panel.
      • Engine undershield.
      • Auxiliary drive belt.

        NOTE: Auxiliary drive belt(s), tensioner pulley and guide pulley(s) MUST be replaced.

      • Flywheel cover.
  3. Lock flywheel with large screwdriver. Slacken crankshaft pulley bolt [1] .
  4. Remove:
      • Crankshaft pulley bolt [1] .
      • Crankshaft pulley [2] .
  5. Support engine.
  6. Remove:
      • Engine upper tie-bar.
      • Engine lower tie-bar.

    NOTE: Mark position of RH engine mounting before removal.

  7. Slacken RH engine mounting to intermediate bracket bolt.
  8. Remove:
      • RH engine mounting and intermediate bracket.
      • Blanking plug from cylinder block [3] .
      • Timing belt cover [4] .
  9. Turn crankshaft clockwise until camshaft sprocket timing marks almost aligned [5] .
  10. Insert crankshaft timing pin [6] . Tool No.Mot.1054.
  11. Turn crankshaft slowly until timing pin can be inserted fully.
  12. Ensure camshaft sprocket timing marks aligned [7] .
  13. Ensure crankshaft sprocket timing mark located one tooth to left of centre [8] .
  14. Remove high-pressure fuel pump support bracket.
  15. Slacken tensioner pulley nut [9] . Move tensioner away from belt.
  16. Remove timing belt.
  17. Remove tensioner pulley.

Installation

NOTE: Timing belt and tensioner pulley MUST be replaced.

  1. Fit new tensioner pulley. Finger tighten nut [9] .
  2. Ensure crankshaft timing pin inserted [6] .
  3. Ensure crankshaft keyway located centrally between lugs on engine front housing [10] .
  4. Ensure crankshaft sprocket timing mark located one tooth to left of centre [8] .
  5. Ensure camshaft sprocket timing marks aligned [7] .
  6. Fit timing belt. Ensure marks on belt aligned with marks on sprockets [11] , [12] & [13] . Ensure belt is taut on non-tensioned side.

    NOTE: Ensure directional arrows point in direction of rotation.

  7. Slacken tensioner pulley nut [9] .
  8. Turn tensioner pulley anti-clockwise until movable pointer [14] aligned with notch [15] . Use suitable tool [16] .
  9. Tighten tensioner pulley nut [9] . Tightening torque: 23 Nm.
  10. Remove crankshaft timing pin [6] .
  11. Turn crankshaft two turns clockwise until camshaft sprocket timing marks almost aligned [5] .
  12. Insert crankshaft timing pin [6] .
  13. Turn crankshaft slowly until timing pin can be inserted fully.
  14. Ensure camshaft sprocket timing marks aligned [7] .
  15. Ensure crankshaft keyway located centrally between lugs on engine front housing [10] .
  16. Ensure tensioner pulley pointer [14] aligned with notch [15] .
  17. If not:
      • Slacken tensioner pulley nut [9] by a maximum of one turn whilst holding tensioner pulley with suitable tool [16] .
      • Turn tensioner pulley clockwise until pointer aligned with notch [14] & [15] . Use suitable tool [16] .
      • Tighten tensioner pulley nut [9] . Tightening torque: 23 Nm.
  18. Remove crankshaft timing pin [6] .
  19. Refit blanking plug [3] . Tightening torque: 25 Nm.
  20. Fit high-pressure fuel pump support bracket.
  21. Fit timing belt cover [4] .
  22. Lock flywheel with large screwdriver.
  23. Fit:
      • New crankshaft pulley [2] .
      • New crankshaft pulley bolt [1] .
  24. Tighten crankshaft pulley bolt [1] . Tightening torque: 40 Nm + 110±10°.

    NOTE: DO NOT start engine without auxiliary drive belt fitted as damage may occur to crankshaft pulley.

  25. Install components in reverse order of removal.

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