Timing Belt: Adjustments

Timing Belt Cover And Belt:

1. Remove the timing belt outer cover.
2. If the belt timing is incorrect, loosen the belt tensioner adjustment screw. Position Camshaft Belt Tension Adjusting Tool T74P-6254-A or equivalent on the tension spring rollpin, and retract the belt tensioner. Tighten the adjustment screw to hold the tensioner in retracted position.
3. Remove the bolts holding the timing sensor in place and pull the sensor assembly free of the dowel pin.
4. Remove the crankshaft pulley, hub and belt guide.
5. Remove the drive belt and inspect it for wear or damage. If the belt is damaged, replace it.

Timing Pointer Locations:

6. Position the crankshaft sprocket to align with the TDC mark, and the camshaft sprocket to align with the camshaft timing pointer.
7. Install the timing belt over the crankshaft sprocket and then counterclockwise over the auxiliary and camshaft sprockets. Align the belt fore and aft on the sprockets.
8. Loosen the tensioner adjustment bolt to allow the tensioner to move against the belt. If the spring does not have enough tension to move the roller against the belt (the belt hangs loose), it may be necessary to manually push the roller against the belt and tighten the bolt.

NOTE: The spring cannot be used to set belt tension. A wrench must be used on the tensioner assembly.

To ensure the belt does not jump time during rotation in Step 9, remove one spark plug from each cylinder.

9. Rotate the crankshaft two complete turns in direction of normal rotation to remove the slack from the belt. Tighten tensioner adjustment and pivot bolts to 19-29 Nm (14-21 ft lb). Check the alignment of the timing marks.
10. Install the crankshaft belt guide.
11. Install the timing sensor onto the dowel pin and tighten the two longer bolts.
12. Align the timing sensor as follows:
a. Rotate the crankshaft 45 degrees (1/8 turn) counterclockwise and install the crankshaft pulley and hub assembly. Tighten the bolt to 140-180 Nm (103-133 ft lb).
b. Rotate the crankshaft 90 degrees (1/4 turn) clockwise so that the vane of the crankshaft pulley engages with the timing sensor positioner. Tighten the two shorter sensor bolts to 2.3-3.5 Nm (21-31 in lb).

Timing Sensor Alignment:

c. Rotate the crankshaft 90 degrees (1/4 turn) counterclockwise and remove the sensor positioner.
d. Rotate the crankshaft 90 degrees (1/4 turn) clockwise and measure the outer vane to sensor air gap. The air gap must be 0.458 to 0.996 mm (0.018-0.039 inch).
14. Install the timing belt cover and the spark plugs.