Timing Belt: Service and Repair

REMOVAL





1. Remove front timing belt cover. Timing Cover

CAUTION: Align camshaft and crankshaft timing marks before removing the timing belt by rotating the engine with the crankshaft.





2. Rotate crankshaft until timing marks are aligned at both the camshaft and crankshaft.





3. Loosen the timing belt tensioner fasteners.

CAUTION: DO NOT loosen, tighten, or remove the tensioner pivot bolt.

4. Remove the timing belt from sprockets.

CAUTION: Do not rotate the camshaft once the timing belt has been removed or damage to valve components may occur.

5. For timing belt tensioner pulley assembly removal. Timing Belt Tensioner

INSTALLATION





1. Set crankshaft sprocket to TDC by aligning the sprocket with the arrow on the oil pump housing, then back off to 3 notches before TDC.





2. Set camshaft to TDC by aligning mark on sprocket with the arrow on the rear of timing belt cover.





3. Move crankshaft to 1/2 mark before TDC for belt installation.
4. Install the timing belt. Starting at the crankshaft, go around the water pump sprocket, then around the camshaft sprocket, and finally route the back side of the timing belt around the timing belt tensioner pulley.
5. Move crankshaft sprocket to TDC to take up belt slack.





6. Re-set the hydraulic tensioner by placing tensioner body in a vise equipped with soft jaws. Slowly compress the plunger.
7. Compress the plunger until a 1.9 mm (5/64) Allen wrench or pin can be inserted through the body and the plunger.
8. Remove hydraulic tensioner from vise and install on engine. Do not tighten attaching bolts at this time.
9. Using a torque wrench on the tensioner pulley bolt, apply 28 N-m (250 in. lbs.) of torque against the timing belt.





10. With torque applied to the tensioner pulley/timing belt, move the tensioner up against the pulley pivot bracket and tighten tensioner bolts to 31 N-m (23 ft. lbs.).
11. Pull the tensioner plunger retaining pin. Pretension is correct when the pin can be removed and installed into tensioner housing and plunger.









12. Rotate crankshaft 2 revolutions and check the alignment of the timing marks.
13. Check belt tension by installing pin into tensioner housing. If pin cannot be re-installed, repeat belt tension procedure.
14. Install the front timing belt cover. Timing Cover
15. Lower vehicle and perform camshaft and crankshaft timing relearn procedure as follows:
- Connect the DRB III scan tool to the data link (diagnostic) connector. This connector is located in the passenger compartment; at the lower edge of instrument panel near the steering column.
- Turn the ignition switch on.
- Access "Engine" diagnostics.
- Select "Miscellaneous" option.
- Select "ReLearn Cam Crank" option and follow directions on DRBIII screen.