Camshaft: Service and Repair
Camshafts Removal and InstallationRemoval
1. Remove the timing belt.
2. Disconnect the breather tube at the camshaft cover.
3. Disconnect the engine ventilation hose at the camshaft cover.
4. Remove the spark plug cover bolts.
5. Remove the spark plug cover.
6. Disconnect the ignition wires from the spark plugs.
7. Remove the camshaft cover bolts.
8. Remove the camshaft cover washers.
9. Remove the camshaft cover and the camshaft cover gasket.
10. While holding the intake camshaft firmly in place, remove the intake camshaft gear bolt.
11. Remove the intake camshaft gear.
12. While holding the exhaust camshaft firmly in place, remove the exhaust camshaft gear bolt.
13. Remove the exhaust camshaft gear.
14. Loosen the camshaft bearing cap bolts in stages of one-half to one turn.
15. Remove the camshaft bearing cap bolts from the cylinder head.
16. Remove the camshafts.
17. Remove the seal ring from the camshafts.
18. Check the camshaft and bearing seats for wear and replace them if necessary.
Installation
CAUTION: Take extreme care to prevent any scratches, nicks or damage to the camshafts.
1. Lubricate the camshaft journals and the camshaft caps with engine oil.
2. Install the intake camshaft.
3. Install the intake camshaft caps in their original positions.
4. Install the intake camshaft cap bolts.
5. Install the exhaust camshaft.
6. Install the exhaust camshaft caps in their original positions.
7. Install the exhaust camshaft cap bolts.
8. Tighten the camshaft cap bolts gradually and in the sequence shown for each camshaft cap.
Tighten: Tighten the camshaft bearing cap bolts to 8 Nm (71 inch lbs.).
9. Measure the intake camshaft end play and the exhaust camshaft end play.
10. Install the intake camshaft gear.
11. While holding the intake camshaft firmly in place, install the intake camshaft gear bolt.
Tighten: Tighten the intake camshaft gear bolt to 50 Nm (37 ft. lbs.) plus 60° and 15° using the angular torque gauge KM-470-B.
12. Install the exhaust camshaft gear.
13. While holding the exhaust camshaft firmly in place, install the exhaust camshaft gear bolt.
Tighten: Tighten the exhaust camshaft gear bolt to 50 Nm (37 ft. lbs.) plus 60° and 15° using the angular torque gauge KM-470-B.
14. Install the camshaft cover and the camshaft cover gasket.
15. Install the camshaft cover washers.
16. Install the camshaft cover bolts.
Tighten: Tighten the camshaft cover bolts to 8 Nm (71 inch lbs.).
17. Connect the ignition wires to the spark plugs.
18. Install the spark plug cover.
19. Install the spark plug cover bolts.
Tighten: Tighten the spark plug cover bolts to 8 Nm (71 inch lbs.).
20. Connect the breather tube to the camshaft cover.
21. Connect the engine ventilation hose to the camshaft cover.
22. Install the timing belt.