Renault Scenic/Grand Scenic III 2.0D dCi 2009 timing chain change instructions and replacement inteval. Full guide!
Special tools
- Camshaft holding/alignment tool – No.Mot-1769.
- Crankshaft pulley holding tool – No.Mot-1770.
- Crankshaft timing pin – No.Mot-1766.
- Flywheel locking tool – No.Mot-1431.
- Two-piece inlet camshaft gear alignment tool – No.Mot-1773.
Special precautions
- Disconnect battery earth lead.
- Remove glow 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
- Removal/installation of timing chain requires:
- Engine removal.
- Ensure engine at TDC on No.1 cylinder.
- Turn crankshaft clockwise until crankshaft keyway aligned with hole [1] & [2] .
- Fit crankshaft timing pin [3] .
- Turn crankshaft anti-clockwise until it stops against timing pin.
- Ensure crankshaft keyway at 12 o’clock position [4] .
- Ensure groove in exhaust camshaft is horizontal [5] . Large section above groove facing upwards [6] .
- Ensure timing mark on inlet camshaft gear aligned at 12 o’clock position [7] .
- Slacken exhaust camshaft sprocket bolts [8] .
- Lock timing chain tensioner in retracted position:
- Depress tensioner blade [9] .
- Insert 3 mm pin to lock tensioner plunger [10] .
- Remove chain tensioner, tensioner rail and chain guide.
- Remove timing chain, exhaust camshaft sprocket and crankshaft sprocket as an assembly.
- Fit camshaft holding/alignment tool [11] .
- Secure tool with M6 bolt [12] .
- Slacken inlet camshaft gear bolt [13] .
- Remove camshaft holding/alignment tool [11] .
- Align gear teeth of two-piece inlet camshaft gear. Use screwdriver [14] .
- Remove exhaust camshaft gear.
- Remove two-piece inlet camshaft gear.
Installation
- Ensure groove in exhaust camshaft is horizontal [5] . Large section above groove facing upwards [6] .
- Ensure groove in inlet camshaft at 12 o’clock position [15] .
- Ensure crankshaft timing pin correctly fitted [3] .
- Ensure crankshaft keyway at 12 o’clock position [4] .
- Align two-piece inlet camshaft gear on inlet camshaft gear alignment tool and lock with suitable pin [16] & [17] . Fit two-piece inlet camshaft gear.
- Ensure timing mark on inlet camshaft gear aligned at 12 o’clock position [7] . Tighten inlet camshaft gear bolt finger tight [13] .
- Fit exhaust camshaft gear.
NOTE: Ensure threaded holes positioned in centre of slots [18] .
- Remove locking pin from two-piece inlet camshaft gear [17] . Fit camshaft holding/alignment tool [11] .
- Fit new inlet camshaft gear bolt [13] .
- Tightening torque: 20 Nm + 35°±6°. Remove camshaft holding/alignment tool [11] .
- Ensure groove in exhaust camshaft is horizontal [5] .
- Large section above groove facing upwards [6] .
- Ensure groove in inlet camshaft at 12 o’clock position [15] .
- Ensure crankshaft keyway at 12 o’clock position [4] . Install chain guide.
- Align coloured chain link with crankshaft sprocket timing mark [19] .
- Align coloured chain link with camshaft sprocket timing mark [20] .
- Install timing chain, exhaust camshaft sprocket and crankshaft sprocket as an assembly. Tighten exhaust camshaft sprocket bolts finger tight [8] .
- Ensure camshaft sprocket turns freely. Install timing chain tensioner rail. Install chain tensioner.
- Remove chain tensioner locking pin [10] .
- Fit camshaft holding/alignment tool [11] .
- Secure tool with M6 bolt [12] .
- Ensure camshaft holding/alignment tool can be fitted. If not, repeat adjustment procedure of camshafts. Fit new exhaust camshaft sprocket bolts [8] .
- Tightening torque: 10 Nm + 40°±6°.
- Remove camshaft holding/alignment tool [11] . Remove crankshaft timing pin [3] .
- Fit new crankshaft pulley centre bolt. Tightening torque: 50 Nm + 85°±6°.
NOTE: DO NOT start engine without auxiliary drive belt fitted as damage may occur to crankshaft pulley.