Crankshaft Gear/Sprocket: Service and Repair

Removal

1. Disconnect battery ground cable.
2. Remove timing belt covers as outlined under TIMING BELT COVER. If timing belt is to be reused, mark direction and belt-to-sprocket reference marks to ensure correct position during installation.
3. Remove timing belt guide from crankshaft sprocket.
4. Loosen idler pulley bolt, then push idler pulley as far left as possible and temporarily tighten idler pulley bolt.
5. Remove timing belt, idler pulley bolt, pulley and tension spring.
6. Remove idler pulley bolt, pulley and return spring.
7. Remove crankshaft timing pulley.
8. Remove camshaft timing gear by securing the camshaft with a wrench and removing the bolt, Fig. 30. Ensure not to damage cylinder head or camshaft with wrench.

Fig. 5 Aligning Camshaft Gear Hole.:

Fig. 30 Camshaft Timing Gear.:

Fig. 25 Crankshaft Timing Pulley Alignment.:

Fig. 26 Timing Mark Alignment.:

Installation

1. Install camshaft timing gear.
2. Install crankshaft timing gear.
3. Position No. 1 cylinder at TDC.
4. Align camshaft timing gear hole with the exhaust camshaft cap mark, Fig. 5.
5. Install idler pulley, mount bolt and tensioner spring. Pry idler to left and temporarily tighten.
6. Install timing belt. If reusing original timing belt, align points made during disassembly with arrow pointing in proper direction.
7. Loosen timing belt idler pulley mount bolt.
8. Temporarily install crankshaft pulley bolt and turn crankshaft 2 revolutions from TDC to TDC. Always turn the crankshaft clockwise.
9. Ensure all components are properly aligned.
10. Install the timing belt idler pulley bolt.
11. Ensure timing belt deflection is 0.20-0.24 inch. If belt is not within specification, the idler pulley must be adjusted.
12. Reverse remaining removal procedure to complete procedure.