Timing Belt: Service and Repair

Drive belt, removing, installing and adjusting tension

Removing

- Remove ribbed belt.
- Remove tensioner for ribbed belt.
- Remove crankshaft vibration damper and pulley.
- Remove coolant pump pulley.
- Remove upper and lower parts of drive belt guard.
- Mark running direction of drive belt.
- Loosen tensioner and remove drive belt.

Installing

CAUTION! Before turning camshaft, ensure that pistons are NOT at Top Dead Center (TDC). With the belt removed there is danger of damaging the valves and the piston crown.




- Align marking on camshaft sprocket with marking on drive belt guard.
- Install drive belt on crankshaft drive belt sprocket and on intermediate shaft drive belt sprocket (note running direction when installing a used belt).

Note: Disregard marking on intermediate shalt drive belt sprocket.

- Install lower drive belt guard.
- Install coolant pump pulley.
- Install crankshaft vibration damper and pulley (note installation position, holes are offset).
- Turn crankshaft to place the No.1 cylinder at TDC.

Engine installed:



- Turn flywheel -A- or driveplate -B- to align marks (arrows) and place No.1 cylinder at TDC.

Engine removed:



- Turn crankshaft vibration damper to align notch with timing mark (arrow) and place No. 1 cylinder at TDC.







- Turn intermediate shaft drive belt sprocket with drive belt (in direction indicated by arrow) until distributor rotor aligns with marking for No.1 cylinder on ignition distributor housing (drive belt slips over teeth of crankshaft drive belt sprocket).
- Install drive belt on tensioner and camshaft drive belt sprocket.

Note: Tighten tensioner lock nut only slightly to make installation of the drive belt easier.

For 1997 and later models:
1997 and latter models use a Thermo Tension Roller to maintain proper belt tension at all engine temperatures.
This tensioner set up requires special adjustment procedures.
These special procedures can be found at Timing Belt Tensioner, Service and Repair.




- Increase tension on drive belt by turning tensioner pulley with wrench in direction shown (arrow).
- It must be possible to twist drive belt by 90 ° with thumb and forefinger half-way between camshaft and intermediate shaft drive belt sprockets.
- Tighten lock nut on belt tensioner. Tightening torque: 45 Nm (33 ft lb)
- Turn crankshaft though two complete revolutions.
- Check belt tension.
- Check alignment of ignition distributor rotor with markings on distributor housing.
- Install upper drive belt guard.
- Install tensioner for ribbed belt.
- Tightening torque: 20 Nm (15 ft lb)
- Install ribbed belt.