Timing Belt: Service and Repair
REMOVAL- Drain the cooling system.
- Remove the radiator shroud.
- Remove the radiator
- Remove the thermostat housing and auxiliary air device
- Remove the alternator.
Figure 2.:
- Remove the crankshaft pulley bolt.
^ Engage fifth gear and apply hand brake
^ Remove the bellhousing inspection plate with the TDC sensor. (Do not alter its setting)
- Lock the ring gear using clamp (-).0144B
Figure 3.:
- Remove the pulley and the cover.
- Remove clamp (-).0144B
- Reinstall the pulley bolt and rotate the crankshaft in order to position the camshaft sprocket reference (A) approximately as shown opposite.
Figure 4.:
Figure 5.:
- Loosen the two tensioner mounts
^ bolt (2)
^ nut (3)
- Slacken timing belt
- Use a screwdriver (4) at (a) to tilt the tensioner support plate (5)
- Lock the nut (3) when the support plate is at the end of its travel in the slot.
- Remove the timing belt.
IMPORTANT
- Handling of the timing belt should be done with great care.
- Never bring the belt in contact with oil or greasy substances.
- Never make the belt bow to an arc of less than 60 mm diameter.
REINSTALL
Figure 5.:
- Check:
^ The condition of the belt.
^ The play between the tensioner support plate and bolt (6) must be between:
0.10 and 0.15 mm
If this is not the case, adjust it using bolt (6).
- Coat the threads of bolt (6) with LOCTITE.
- Tighten nut (7).
Figure 6.:
- Make sure the crankshaft is in the timing position (Key (a) to the left).
- Install the rocker compressor tool (-).0144A and tighten the nuts gradually until the camshaft is able to rotate freely.
Figure 7.:
- Position the intermediate shaft (Reference (b)):
^ the distributor rotor finger must be perpendicular to the engine's axis.
If this is not the case, turn the intermediate shaft once or twice.
- Position the camshaft at approximately 450 (Rectangular cutout (c) as shown.
- Installing the belt:
^ Starting with the crankshaft pinion, line up the belt references with the timing marks on the sprockets, the arrows (d) on the outside of the belt indicate the direction of engine rotation.
^ Center the belt on the sprockets and on the tensioner.
Figure 8.:
BELT TENSION:
- Loosen the two mounts (2) and (3).
^ The belt is AUTOMATICALLY tensioned by the tensioner spring.
- Retighten the two mounts (2) and (3). Tightening torque : 18.13 ft lb.
- Remove the rocker compressor tool (-).0144A.
Figure 9.:
- Reinstall the timing belt cover.
- Make sure the two split pins (4) are in place.
- Reinstall the crankshaft pulley.
- Degrease and brush clean the pulley bolt (5) and coat its threads with LOCTITE.
^ Tightening torque : 94.25 ft lb.
- Reinstall all the items removed on disassembly in the reverse order of removal.
- Reconnect all electrical equipment.
- Refill cooling system.