Timing Belt: Adjustments

Adjust valve timing

Note: Use the following procedure to adjust toothed belt, even for repairs that only require removal of toothed belt from camshaft gear.
Adjustments can be made on a hot or cold engine.

CAUTION: When turning camshaft, crankshaft may not be at TDC for any cylinder. Valves and/or piston heads maybe damaged.






Align marking on camshaft gear to marking on cylinder head cover.
GPlace toothed belt on crankshaft gear noting direction of rotation.
Install lower toothed belt cover.
Using a bolt, secure vibration damper/belt pulley (note locating point).
Set crankshaft to TDC Cyl. 1 position.
Place toothed belt on belt tensioner and camshaft gear.






Tighten toothed belt by turning tensioner -A- to right using 2 pin spanner (i.e. Matra V159 pin wrench) until cylinder -1- is fully extended and tensioner -2- is raised by approximately 1 mm.
Tighten mounting bolt -3- hand tight.
Turn crankshaft 2 rotations in running direction.






Check area -A- for proper alignment with the upper edge of piston -2- (Fig. A13-0012) and adjust if necessary.
Area -A-: adjustment OK
Area -B-: wear limit
Area -C-: re-adjust and check belt drive including tensioner for wear

Note: If edge of piston is located in area -A-, measurement -D- is between 25 - 29 mm (0.984 - 1.142 in).






Counterhold toothed belt tensioner using 2 pin spanner -B- and tighten mounting screw -3-.






Turn crankshaft at central bolt for toothed belt gear two rotations in direction of engine rotation, until camshaft and crankshaft markings align with their respective reference points.

Install vibration damper/belt pulley.
Install upper toothed belt cover.
Install ribbed belt and ribbed belt tensioner.

Note: When installing the ribbed belt, make sure it is seated correctly on the pulley.

Tightening Torques

Toothed belt tensioner to tensioner assembly
25 Nm (18 ft lb)

Lower toothed belt cover to cylinder block
M6 10 Nm (7 ft lb)
M8 20 Nm (15 ft lb)

Vibration damper/belt pulley to crankshaft
40 Nm (30 ft lb) Bolt strength grade: 10.9

Ribbed belt tensioner to mounting bracket
25 Nm (18 ft lb)