Timing Belt: Service and Repair

Fig. 9 Aligning Camshaft To Cylinder Head Timing Marks:

1. Disconnect battery ground cable, then remove accessory drive belts.
2. Remove timing cover. Align timing mark on camshaft sprocket with timing mark on cylinder head, Fig. 9.
3. Install timing belt cover, then ensure timing mark on crankshaft damper aligns with TDC mark on front cover.
4. Remove timing belt cover.
5. Loosen both timing tensioner attaching bolts using torque wrench adapter T81P-6254-A or equivalent.
6. Pry tensioner away from belt as far as possible, then tighten one attaching bolt.
7. Remove crankshaft damper, then the timing belt. Discard timing belt if damaged.
8. Install timing belt over sprockets in a counterclockwise direction starting at crankshaft. Ensure belt span between crankshaft and camshaft is kept tight as belt is installed over remaining sprocket.
9. Loosen belt tensioner attaching bolt and allow to locate against belt.
10. Tighten one tensioner attaching bolt using previously mentioned tool, then install crankshaft damper, drive plate and pulley attaching bolt.
11. Retain crankshaft damper using strap wrench tool No. D85L-6000-A or equivalent, then torque pulley nut to specifications.
12. To seat timing belt on sprocket teeth, proceed as follows:
a. Connect battery ground cable, then crank engine for approximately 30 seconds.
b. Disconnect battery ground cable, then rotate crankshaft as necessary to align timing pointer on cam sprocket with timing mark on cylinder head.
c. Position timing belt cover on engine, then ensure timing mark on crankshaft aligns with TDC pointer on cover.
d. If timing marks do not align, remove belt, align timing marks and repeat steps 8-12.
13. Loosen tensioner attaching bolt, then secure crankshaft and ensure it will not rotate.
14. Using camshaft holding tool No. D81P-6256-A or equivalent and a suitable torque wrench, turn camshaft sprocket counterclockwise. Torque belt tensioner attaching bolt to specifications. for new belt or 10 ft. lbs. on new belt. Ensure engine is cold when applying torque to camshaft sprocket. Do not set torque on hot engine.
15. Install timing belt cover, accessory drive belts, then connect battery ground cable.