How to Replace timing chain on Renault Twingo 1 1.2i 1993-1997

Special tools

• Flywheel/drive plate locking tool – No.Mot.582.
• Tensioner retaining tool – No.Mot.761.
• Timing cover aligning tool – No.Mot.964.

General precautions

• Disconnect battery earth lead.
• Remove spark plugs to ease turning engine.
• Turn engine in normal direction of rotation (unless otherwise stated).
• Observe tightening torques.
• If fitted: Mark position of crankshaft position (CKP) sensor before removal.
• Do NOT turn crankshaft via camshaft or other sprockets.
• Do NOT turn crankshaft or camshaft with timing chain removed.

Valve timing procedures

• Crankshaft sprocket timing mark at 1 o’clock position [1] .
• Camshaft sprocket timing mark at 7 o’clock position [2] .
• Ensure timing marks facing each other on centre line between crankshaft and camshaft [1] & [2] .

Tensioner

Type A – [3]

• Reset plunger assembly before tensioner installation:
  • Insert spring and piston into plunger [4] .
  • Push piston in fully and turn clockwise until locked.
  • Insert plunger assembly into tensioner housing [5] .
• Install tensioner assembly.
• Push plunger into housing to release piston.

Type B – [6]

NOTE: Type B tensioner does NOT require removal.

• Push tensioner arm [7] until no longer in contact with chain.
• Install tensioner retaining tool [8] . Tool No.Mot.761.
• Remove tensioner retaining tool after chain installation.

NOTE: Simplex or duplex chains fitted depending on engine type.

• To replace camshaft sprocket on engines without securing bolt [9] , proceed as follows:
  • Drill a hole into camshaft 6 mm in diameter and 30 mm deep.
  • Re-drill to 6,75 mm in diameter.
  • Tap to M8 x 1,25 mm.
• Remove crankshaft and camshaft sprockets together using suitable puller.
• Install new sprockets and chain as an assembly.
• Tighten camshaft sprocket bolt, as follows:
  • Except C1J Turbo – A [9] . Tightening torque: 30 Nm.
  • C1J Turbo – B [9] . Tightening torque: 50 Nm.
• Tighten crankshaft sprocket bolt as follows:
  • Bolt length X = 40 mm [10] . Tightening torque: 80 Nm.
  • Bolt length X = 45 mm [10] . Tightening torque: 110 Nm.