Camshaft Gear/Sprocket: Service and Repair
Camshaft, Rocker Arm Assembly, Camshaft Seal, and Pulley Installation
Front
1. Loosen the locknuts and the adjusting screws.
2. Clean and dry the camshaft oil seal housing.
3. Apply a light coat of new engine oil to the lip of the camshaft oil seal.
4. Gently tap the new camshaft oil seal (A) into the cylinder head.
1. Tap the camshaft oil seal in squarely.
2. Install the oil seal about 0.5-1.5 mm (0.020-0.059 in) below the surface of the cylinder head.
5. Insert the camshaft (B) into the cylinder head, then install the camshaft thrust cover (C). Always use a new O-ring (D). Apply new engine oil to the journals and the cam lobes.
6. Clean the excess oil off the camshaft, and check that the oil seal lips are not distorted.
7. Install the solid dowel pin (E).
8. If the rocker arm assembly is disassembled, reassemble the rocker arm assembly Rocker Arm and Shaft Disassembly/Reassembly.
9. Remove all of the old liquid gasket from the rocker shaft holder and the cylinder head.
10. Apply liquid gasket (P/N 08717-0004, 08718-0003, 08718-0004, or 08718-0009) to the rocker shaft holder mating surface of the cylinder head. Install the component within 5 minutes of applying the liquid gasket.
NOTE:
- Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A).
- If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes.
- If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply the new liquid gasket.
11. Set the rocker arm assembly in place, and loosely install the bolts. Make sure that the rocker arms are properly positioned on the valve stems.
NOTE:
- Wait at least 30 minutes before filling the engine with oil.
- Do not run the engine for at least 3 hours after installing the rocker arm assembly.
12. Tighten each bolt two turns at a time in the sequence shown to ensure that the rockers do not bind on the valves.
13. Install the injector base (A). Always use a new gasket (B).
NOTE: The front injector base gasket is different from the rear one. Do not mix injector base gasket types.
14. Apply new engine oil to the threads of the camshaft pulley mounting bolt (A). Install the back cover (B), then install the camshaft pulley (C).
15. Set the camshaft pulleys to top dead center (TDC) before bolting them onto the engine block.
Rear
1. Loosen the locknuts and the adjusting screws.
2. Clean and dry the camshaft oil seal housing.
3. Apply a light coat of new engine oil to the lip of the camshaft oil seal.
4. Gently tap the new camshaft oil seal (A) into the cylinder head.
1. Tap the camshaft oil seal in squarely.
2. Install the oil seal about 0.5-1.5 mm (0.020-0.059 in) below the surface of the cylinder head.
5. Insert the camshaft (B) into the cylinder head, then install the camshaft thrust cover (C). Always use a new O-ring (D). Apply new engine oil to the journals and the cam lobes.
6. Clean the excess oil off the camshaft, and check that the oil seal lips are not distorted.
7. Install the hollow dowel pin (E).
8. If the rocker arm assembly is disassembled, reassemble the rocker arm assembly.
9. Remove all of the old liquid gasket from the rocker shaft holder and the cylinder head.
10. Apply liquid gasket (P/N 08717-0004, 08718-0003, 08718-0004, or 08718-0009) to the rocker shaft holder mating surface of the cylinder head. Install the component within 5 minutes of applying the liquid gasket.
NOTE:
- Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A).
- If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes.
- If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply the new liquid gasket.
11. Set the rocker arm assembly in place, and loosely install the bolts. Make sure that the rocker arms are properly positioned on the valve stems.
NOTE:
- Wait at least 30 minutes before filling the engine with oil.
- Do not run the engine for at least 3 hours after installing the rocker arm assembly.
12. Tighten each bolt two turns at a time in the sequence shown to ensure that the rockers do not bind on the valves.
13. Install the injector base (A). Always use a new gasket (B).
NOTE: The rear injector base gasket is different from the front one. Do not mix injector base gasket types.
14. Apply new engine oil to the threads of the camshaft pulley mounting bolt (A). Install the back cover (B), then install the camshaft pulley (C).
15. Set the camshaft pulleys to TDC before bolting them onto the engine block.