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How to Replace timing chain on Renault Scenic 2.0 16V 2003

Renault Scenic 2.0 16V 2003 cambelt change instructions and replacement inteval. Full guide!

Special tools

  • Crankshaft timing pin – Renault No.Mot.1054.
  • Camshaft setting bar – Renault No.Mot.1496.
  • Camshaft adjusting wrench – Renault No.Mot.799-01.
  • Camshaft locking tool – Renault No.Mot.1509/01.

Special precautions

  • Disconnect battery earth lead.
  • DO NOT turn crankshaft or camshaft when timing belt removed.
  • Remove spark 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.

Repair times – hrs

Camshaft drive belt/chain – R & I 4,70

Valve timing procedures

How to Replace timing belt on Renault Scenic 2.0 16V 2003
How to Replace timing belt on Renault Scenic 2.0 16V 2003

Removal

NOTE: If timing belt is excessively noisy between idle and 2000 rpm a modified timing belt, tensioner pulley and guide pulleys should be fitted. Refer to a Renault dealer.

WARNING: Engines with variable valve timing: Mark camshaft sprockets and camshaft adjusters with chalk or paint prior to timing belt removal to assist alignment on installation.

  1. Raise and support front of vehicle.
  2. Remove:
    • Engine top cover.
    • RH front wheel.
    • RH splash guard.
    • Auxiliary drive belt.

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

  3. Support engine.
  4. Remove:
    • RH engine mounting.
    • Blanking plugs from rear of camshafts.
    • Blanking plug from cylinder block [1] .
  5. Turn crankshaft clockwise until grooves in rear of camshafts are just before horizontally aligned position.
    NOTE: Grooves located below cylinder head upper face.
  6. Insert timing pin through hole in cylinder block and into crankshaft [2] . Tool No.Mot.1054.
  7. Turn crankshaft slightly clockwise until timing pin locates in crankshaft [3] . Tool No.Mot.1054.
  8. NOTE: Ensure timing pin not inserted into crankshaft web balance hole [3] .
  9. Ensure grooves in rear of camshafts horizontally aligned [4] .
  10. Lock flywheel with large screwdriver. Slacken crankshaft pulley bolt [5] .
  11. Fit setting bar to rear of camshafts [6] . Tool No.Mot.1496.
  12. Remove:
    • Crankshaft pulley bolt [5] .
    • Crankshaft pulley [7] .
    • Timing belt covers [8] & [9] .
  13. Slacken tensioner nut [10] .
  14. Allow tensioner pulley to move away from belt.
  15. Remove:
    • Tensioner nut [10] .
    • Tensioner pulley [11] .
    • Guide pulleys (G1 & G2) [12] .
    • Timing belt.

    NOTE: DO NOT allow crankshaft sprocket to fall off crankshaft.

Installation

NOTE: Timing belt, tensioner pulley and guide pulleys MUST be replaced.
NOTE: There are two types of crankshaft fitted, type A and type B.

  1. Ensure timing pin located correctly in crankshaft [3] .
  2. Ensure grooves in rear of camshafts horizontally aligned [4] . If not: Turn camshafts. Use tool No.Mot.799-01.
  3. Ensure setting bar fitted correctly [6] .
  4. Ensure crankshaft keyway [13] located centrally between lugs on engine front housing [14] .
  5. Fit new guide pulleys (G1 & G2) [12] . Tighten bolts to 50 Nm.
  6. Fit new tensioner pulley [11] . Temporarily tighten nut to 7 Nm [10] .NOTE: Ensure lug on rear of tensioner pulley located in groove in cylinder head.
  7. Crankshaft type A:
    • Remove crankshaft sprocket. Degrease sprocket. Degrease end of crankshaft. Refit crankshaft sprocket.

    NOTE: F4R engines with variable valve timing: Ensure inlet camshaft VVT unit is locked within inlet camshaft sprocket (it should not be possible to rotate VVT unit to the left or right [15] ). If not: Replace VVT unit.

    • Fit timing belt in anti-clockwise direction, starting at crankshaft sprocket. Ensure belt is taut on non-tensioned side.
    • Fit new crankshaft pulley [7] .
    • Fit new crankshaft pulley bolt [5] .
    • Temporarily tighten crankshaft pulley bolt [5] . Leave 2-3 mm clearance between bolt contact face and crankshaft pulley [7] .
    • Slacken tensioner nut [10] . Turn tensioner pulley clockwise until tensioner marks aligned [16] & [17] . Use 6 mm Allen key [18] .
    • Temporarily tighten tensioner nut [10] . Tightening torque: 7 Nm.
    • Mark camshaft sprockets and cylinder head with paint or chalk where indicated [19] .
    • Lock flywheel with large screwdriver. Temporarily tighten crankshaft pulley bolt [5] . Tightening torque: 20 Nm.
    • Remove timing pin [2] .
    • Remove setting bar [6] .
    • Lock flywheel with large screwdriver. Tighten crankshaft pulley bolt [5] . Tightening torque: 40 Nm + 110°.
  8. Crankshaft type B:
    • Remove crankshaft sprocket. Degrease sprocket. Degrease end of crankshaft.

    NOTE: F4R engines with variable valve timing: Ensure inlet camshaft VVT unit is locked within inlet camshaft sprocket (it should not be possible to rotate VVT unit to the left or right [15] ). If not: Replace VVT unit.

    • Fit camshaft locking tool [20] . Tool No.Mot.1509/01.
    • Tighten camshaft locking tool nuts [21] . Tightening torque: 80 Nm.
    • F4P: Remove nut of each camshaft sprocket [22] & [23] .
    • F4R: Remove exhaust camshaft sprocket nut [24] .

    NOTE: Replace camshaft stud if loosened when removing nut.

    • F4R: Remove blanking plug from inlet camshaft sprocket [25] .
    • F4R: Remove inlet camshaft sprocket bolt [26] .
    • Remove locking tool [20] .
    • Remove camshaft sprockets.
    • Degrease ends of camshafts and camshaft sprockets.
    • F4P: Install camshaft sprockets. Finger tighten nut of each camshaft sprocket [22] & [23] .
    • F4R: Install camshaft sprockets. Finger tighten nut and bolt of each camshaft sprocket [24] & [26] .
    • Fit crankshaft sprocket.
    • Fit timing belt.
    • Slacken tensioner nut [10] . Turn tensioner pulley clockwise until tensioner marks aligned [16] & [17] . Use 6 mm Allen key [18] .
    • Temporarily tighten tensioner nut [10] . Tightening torque: 7 Nm.
    • Fit camshaft locking tool [20] .
    • Tighten camshaft locking tool nuts [21] . Tightening torque: 80 Nm.
    • F4P: Temporarily tighten nuts of each camshaft sprocket [22] & [23] . Tightening torque: 30 Nm.
    • F4R: Temporarily tighten nut and bolt of each camshaft sprocket [24] & [26] . Tightening torque: 30 Nm.
    • Remove locking tool [20] .
    • Remove setting bar [6] .
    • Remove timing pin [2] .
    • Mark camshaft sprockets and cylinder head with paint or chalk where indicated [19] .
    • Turn crankshaft two turns clockwise until just before setting position [19] .
    • Insert timing pin through hole in cylinder block and into crankshaft [2] .
    • Turn crankshaft slightly clockwise. Ensure timing pin located correctly in crankshaft [3] .

    NOTE: Ensure timing pin not inserted into crankshaft web balance hole.

    • Ensure setting position marks aligned [19] .
    • Ensure tensioner pulley marks aligned [16] & [17] . If not: Repeat tensioning procedure.
    • Tighten tensioner nut [10] . Tightening torque: 28 Nm.
    • Fit setting bar [6] .
    • Fit locking tool [20] .
    • Tighten camshaft locking tool nuts [21] . Tightening torque: 80 Nm.
    • F4P: Fit new nuts to camshaft sprockets [22] & [23] . Tightening torque: 30 Nm + 86°±6°.
    • F4R: Fit new nut to exhaust camshaft sprocket [24] . Tightening torque: 30 Nm + 86°±6°.
    • F4R: Fit new bolt to inlet camshaft sprocket [26] . Tightening torque: 100 Nm.
    • F4R: Fit blanking plug to inlet camshaft sprocket [25] . Tightening torque: 25 Nm.
    • Remove locking tool [20] .
    • Remove setting bar [6] .
    • Remove timing pin [2] .
    • Fit new crankshaft pulley [7] .
    • Fit new crankshaft pulley bolt [5] .
    • Lock flywheel with large screwdriver. Tighten crankshaft pulley bolt [5] . Tightening torque: 40 Nm + 110°.
  9. All engines:
  10. Turn crankshaft two turns clockwise until just before setting position [19] .
  11. Insert timing pin through hole in cylinder block and into crankshaft [2] .
  12. Turn crankshaft slightly clockwise. Ensure timing pin located correctly in crankshaft [3] .NOTE: Ensure timing pin not inserted into crankshaft web balance hole.
  13. Ensure camshaft setting bar can be fitted easily [6] .
  14. Ensure tensioner pulley marks aligned [16] & [17] . If not: Repeat tensioning procedure.
  15. Tighten tensioner nut [10] . Tightening torque: 28 Nm.
  16. Remove:
    • Timing pin [2] .
    • Setting bar [6] .
  17. Refit blanking plug [1] .
  18. Fit new blanking plugs to rear of camshafts.NOTE: DO NOT start engine without auxiliary drive belt fitted as damage may occur to crankshaft pulley.
  19. Install components in reverse order of removal.
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