Timing Belt: Service and Repair

EXC. 16 VALVE ENGINE
1. Disconnect battery ground cable.
2. Drain cooling system.
3. Loosen water pump pulley bolts.
4. Remove alternator drive belt.
5. Remove power steering pump belt, if equipped.
6. Remove water pump pulley.
7. Loosen A/C idler pulley mount nut and adjusting bolt, then remove drive belt, if applicable.
8. Remove A/C idler pulley and adjusting bolt, if applicable.
9. Raise and support vehicle.
10. Remove righthand under cover.
11. Remove flywheel cover and crankshaft pulley.
12. Remove No. 2 timing belt cover with gasket.
13. Disconnect engine mounting center member.
14. Lower vehicle.
15. Disconnect upper radiator hose at outlet.
16. Disconnect all necessary vacuum hoses.
17. Remove No. 1 timing belt cover and gasket.
18. Remove alternator and position aside.
19. Remove No. 3 timing belt cover.
20. Support engine with a suitable jack.
21. Position No. 1 cylinder at TDC of compression stroke by turning crankshaft until the timing mark is aligned with the TDC mark. The rocker arms on the No. 1 cylinder should be loose. If not, turn crankshaft one complete turn.
22. Disconnect righthand engine mount.
23. Loosen idler pulley to relieve belt tension.

Fig. 13 Belt & pulley alignment. Exc. 16 valve engine:

Fig. 14 Camshaft timing pulley alignment. Exc. 16 valve engine:

Fig. 15 Crankshaft timing pulley alignment. Exc. 16 valve engine:

Fig. 16 Timing mark alignment. Exc. 16 valve engine:

24. Lower engine and remove timing belt. If reusing the timing belt, draw a direction arrow on the belt (in direction of engine rotation) and place alignment marks on the pulleys and belt as shown in Fig. 13.
25. Remove idler pulley bolt, pulley and return spring.
26. Remove camshaft timing pulley.
27. During installation of belt and timing pulley, proceed as follows:
a. Align camshaft knock pin and camshaft timing pulley. Torque bolt to 34 ft. lbs.
b. Align bearing cap mark and the center of the small hole on the camshaft timing pulley as shown in Fig. 14.
c. Align TDC marks on the oil pump body and crankshaft timing pulley as shown in Fig. 15.
d. Remove any oil or water on the crankshaft timing pulley and keep it clean.
e. Install timing belt idler pulley and tension spring. Pry timing belt idler pulley toward the left as far as it will go and temporarily tighten it.
f. Install timing belt. If reusing the original timing belt, align the points marked during removal and install the belt with the arrow pointing in the direction of engine rotation.
g. Raise engine slightly, then loosen timing belt idler pulley mounting bolt. Temporarily install the crank pulley bolt and turn the crankshaft two revolutions clockwise from TDC to TDC.
h. Check valve timing. Ensure each pulley aligns with the marks as shown in Fig. 16.
i. Reverse remaining removal procedure to complete installation procedure.