Special tools
- Dial gauge – No.VAS 6079.
- Dial gauge holder – No.T10170.
- Camshaft alignment tool – No.T10171.
- Camshaft/oil pump sprocket holding tool – No.T10172.
- Crankshaft locking tool – No.T10340.
- Crankshaft pulley holding tool – No.3415.
- Tensioner locking pin – No.T40011.
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
- Removal/installation of timing chain requires:
- Timing chain cover removal.
- Sump removal.
NOTE: Mark direction of rotation on chains.
- Install dial gauge and holder in No.1 cylinder plug hole. Ensure engine at TDC on No.1 cylinder [1] .
- Ensure timing marks on camshafts aligned as shown. If not, turn crankshaft 360° [2] .
- Fit camshaft alignment tool [3] .
NOTE: If camshaft alignment tool cannot be inserted valve timing is incorrect.
- Compress timing chain tensioner and lock with locking pin [4] .
- Remove camshaft sprockets and chain.
- Align camshafts. Use special tool [3] .
- Install camshaft sprockets and timing chain.
- Engines with variable valve timing:
- Fit new bolt. Tighten inlet camshaft adjuster bolt [5] . Tightening torque: 40 Nm + 90°.
NOTE: Inlet camshaft sprocket bolt has LH thread
- Engines without variable valve timing:
- Tighten inlet camshaft sprocket bolt [6] . Tightening torque: 50 Nm + 90°.
- Tighten exhaust camshaft sprocket bolt. Tightening torque: 50 Nm + 90°.
- Tighten crankshaft pulley bolt. Tightening torque:
- A = 150 Nm + 180°
- B = 90 Nm + 90°
NOTE: Crankshaft pulley bolt and bolt on each camshaft sprocket MUST only be used once.
- Remove camshaft alignment tool. Turn crankshaft two turns clockwise.
- Check valve timing [3] .