Part 1 of 2
Removal
CAUTION:
- Use fender covers to avoid damaging painted surfaces.
- To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature (20°C [68°F]) before removing it.
- When handling a metal gasket, take care not to fold the gasket or damage the contact surface of the gasket.
- To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
NOTE:
- Mark all wiring and hoses to avoid misconnection.
- Turn the crankshaft pulley so that the No. 1 piston is at top dead center.
1. Remove the timing chain.
2. Disconnect the heater hoses (A).
3. Remove the water temperature control assembly (A).
4. Disconnect the air vent hose (A) and then remove the intake the manifold (B).
CAUTION:
- Be sure to drain the engine coolant before removing the intake manifold.
- If any coolant drained from the cylinder head vent hole has entered the intake port. This can potentially lead to engine trouble.
5. Remove the LH/RH exhaust manifold heat protector (A).
6. Remove the LH/RH exhaust manifold (A).
7. Remove the LH/RH exhaust camshaft OCV (A).
8. Remove the LH/RH camshaft bearing cap (A) and thrust bearing cap (B).
9. Remove the LH/RH camshaft assembly (A).
10. Remove the cylinder head.
(1) Uniformly loosen and remove the cylinder head bolts, in several passes, in the sequence shown.
CAUTION:
Head warpage or cracking could result from removing bolts in an incorrect order.
(2) Lift the cylinder head from the dowels on the cylinder block and place the cylinder head on wooden blocks on a bench.
CAUTION:
Be careful not to damage the contact surfaces of the cylinder head and cylinder block.
Disassembly
NOTE:
Identify MLA, valves and valve springs as they are removed so that each item can be reinstalled in its original position.
1. Remove the MLAs(A).
2. Remove the valves.
(1) Using the SST(09222-3K000, 09222-3C300), compress the valve spring and remove retainer lock.
(2) Remove the spring retainer.
(3) Remove the valve spring.
(4) Remove the valve.
(5) Using the SST(09222-29000), remove the valve stem seal.
NOTE:
Do not reuse old valve stem seals.
3. Remove the OCV(A).