REMOVAL AND INSTALLATION

<LEFT BANK>

Camshaft removal steps · Engine cover (Refer to GROUP 16 - Ignition System, Ignition Coil ). · Timing belt (Refer to ). · Thermostat housing (Refer to GROUP 14 - Water Hose and Water Pipe ). 1. Engine oil level gauge 2. O-ring 3. PCV hose connection 4. Ignition coil connector 5. Ignition coil >>I<< 6. Rocker cover 7. Rocker cover gasket · Valve clearance check and adjustment (Inlet valve) (Refer to ) <Installation only>. <<A>> >>H<< 8. Rocker arm, shaft and lash adjuster assembly (exhaust side) <<A>> >>H<< 9. Rocker arm and shaft assembly (inlet side) 10. Oil pipe 11. Gasket 12. Camshaft position sensor connector 13. Camshaft position sensor 14. O-ring 15. Camshaft position sensor support 16. Camshaft position sensor support gasket 17. Camshaft position sensing cylinder <<B>> >>E<< 18. Camshaft sprocket 19. Camshaft <<C>> >>D<< 20. Camshaft oil seal Valve stem seal removal steps · Engine cover (Refer to GROUP 16 - Ignition System, Ignition Coil ). 1. Engine oil level gauge 2. O-ring 3. PCV hose connection 4. Ignition coil connector 5. Ignition coil >>I<< 6. Rocker cover 7. Rocker cover gasket · Valve clearance check and adjustment (Inlet valve) (Refer to ) <Installation only>. <<A>> >>H<< 8. Rocker arm, shaft and lash adjuster assembly (exhaust side) <<A>> >>H<< 9. Rocker arm and shaft assembly (inlet side) · Spark plug (Refer to GROUP 16 - Ignition System, Ignition Coil ). 21. Engine hanger <<D>> >>C<< 22. Valve spring retainer lock 23. Valve spring retainer >>B<< 24. Valve spring >>A<< 25. Valve stem seal 26. Valve spring seat

<RIGHT BANK>

Camshaft removal steps · Air intake plenum (Refer to GROUP 15 - Air Intake Plenum ). · Timing belt (Refer to ). · Thermostat housing (Refer to GROUP 14 - Water Hose and Water Pipe ). 1. Breather hose connection 2. Ignition coil connector 3. Ignition coil >>I<< 4. Rocker cover 5. Rocker cover gasket · Valve clearance check and adjustment (Inlet valve) (Refer to ) <Installation only>. <<A>> >>H<< 6. Rocker arm, shaft and lash adjuster assembly (exhaust side) <<A>> >>H<< 7. Rocker arm and shaft assembly (inlet side) 8. Engine oil control valve connector >>G<< 9. Engine oil control valve >>G<< 10. O-ring >>F<< 11. Taper plug 12. Plug 13. Engine oil control valve filter 14. Engine oil control valve housing 15. Engine oil control valve housing gasket <<B>> >>E<< 16. Camshaft sprocket · Engine-ECU (Refer to GROUP 13B - Engine-ECU ). · Air cleaner bracket (Refer to GROUP 15 - Air Cleaner ). 17. Camshaft <<C>> >>D<< 18. Camshaft oil seal Valve stem seal removal steps · Air intake plenum (Refer to GROUP 15 - Air Intake Plenum ). · Timing belt (Refer to ). 1. Breather hose connection 2. Ignition coil connector 3. Ignition coil >>I<< 4. Rocker cover 5. Rocker cover gasket · Valve clearance check and adjustment (Inlet valve) (Refer to ) <Installation only>. <<A>> >>H<< 6. Rocker arm, shaft and lash adjuster assembly (exhaust side) <<A>> >>H<< 7. Rocker arm and shaft assembly (inlet side) · Spark plug (Refer to GROUP 16 - Ignition System, Ignition Coil ). <<D>> >>C<< 19. Valve spring retainer lock 20. Valve spring retainer >>B<< 21. Valve spring >>A<< 22. Valve stem seal 23. Valve spring seat

1.Install special tool auto-lash adjuster holder (MD998443) as shown in the illustration so that the lash adjusters will not fall out. 2. caution Never disassemble the rocker arm and shaft assembly. Loosen the rocker arm and shaft assembly mounting bolts, and then remove the rocker arm and shaft assembly with the bolts still attached.

Use the following special tools to remove the camshaft sprocket. Front hub and flange yoke holder (MB990767) Pin (MD998719)

2. caution Be careful not to damage the camshaft and the cylinder head. Cover the end of a flat-tipped screwdriver with a shop towel and insert into the notched section of the camshaft oil seal, and pry out the camshaft oil seal to remove it.

Use special tool valve spring compressor (MD998772) to compress the valve spring, and remove the valve spring retainer locks.

note Installation position of special tool (MD998772) is different between exhaust side and inlet side.

1. caution Valve stem seal for intake valves and for exhaust valves are different. Be sure to install the correct ones. Valve stem seal identification colour. Intake: GREY Exhaust: GREY GREEN Apply an adequate and minimum amount of engine oil to the valve stem seal.

2. caution Valve stem seal cannot be reused. Special tool valve stem seal installer (MB992182) must be used to install the valve stem seal. Improper installation could result in oil leaking past the valve guide. Use special tool valve stem seal installer (MB992182) to fill a new valve stem seal in the valve guide using the valve stem area as a guide.

Install the valve spring with its identification colour painted end facing the locker arm. Identification colour Intake: White Exhaust: Blue

Use special tool valve spring compressor (MD998772) to compress the valve spring in the same manner as removal, and install the valve spring retainer locks.

2.Use the following special tools to press-fit the camshaft oil seal. Camshaft oil seal installer (MD998713) Camshaft oil seal adapter installer (MD998777)

1.Use the following special tools in the same way as during removal to install the camshaft sprocket. Front hub and flange yoke holder (MB990767) Pin (MD998719) 2.Tighten the camshaft sprocket mounting bolt to the specified torque. Tightening torque: 90 ± 10 N·m

1.Apply the specified sealant to the thread of the taper plug. Specified Sealant: Three bond 1215 or equivalent note Install the taper plug immediately after applying sealant. 2. caution After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the oil or water to the sealant application area or start the engine. Tighten the taper plug to the specified torque. Tightening torque: 10 ± 2 N·m

1. caution Never re-use the O-ring. Before installing O-ring, wind sealing tape around the oil passages cut-out area of engine oil control valve, to prevent damage. If the O-ring is damaged, it can cause an oil leak. Apply an adequate and minimum amount of engine oil to the O-ring and then install it to the engine oil control valve. 2.Install the engine oil control valve to the cylinder head. 3.Tighten the engine oil control valve. Tightening torque: 11 ± 1 N·m

1.Install the inlet side rocker arm and shaft assembly so that the Φ5.5 mm holes of rocker arm shaft face the cylinder head side. 2.Tighten the inlet side rocker arm shaft mounting bolts to the specified torque. Tightening torque: 31 ± 3 N·m 3.Install the exhaust side rocker arm, shaft and lash adjuster assembly so that the notch of rocker arm shaft is located as shown in the figure. 4.Check that the identification mark of exhaust side rocker shaft cap is located as shown in the figure. 5.Tighten the exhaust side rocker arm shaft mounting bolts to the specified torque. Tightening torque: 13 ± 1 N·m

6.Remove special tool auto-lash adjuster holder (MD998443).

Tighten the rocker cover mounting bolts to the specified torque in order of the numbers shown in the illustration. Tightening torque: 8.3 ± 1.0 N·m