Valve Guide Seal: Service and Repair

VALVE OIL SEAL





CAUTION: When removing the oil pans, oil pump assembly and timing chain from engine, first remove the camshaft position sensor (PHASE) and the crankshaft position sensors (REF)/(POS) from the assembly. Be careful not to damage sensor edges.

1. Remove LH ornament cover.
2. Remove RH and LH ignition coils.
3. Remove EGR guide tube.
4. Remove intake manifold collector supports and intake manifold collector (RH cylinder head only).
5. Remove RH and LH rocker covers from cylinder head.
6. Remove camshaft position sensor (PHASE) and crankshaft position sensors (REF)/(POS).
7. Remove oil pan.
8. Remove timing chain..
9. Remove camshaft brackets and camshaft.
10. Remove valve lifters and shims.
11. Remove valve spring with Tool.
12. Reinstall any parts removed in reverse order of removal. Before removing valve spring, fix valve as follows.

Method A: Piston concerned should be set at TDC to prevent valve from falling.





Method B: Remove spark plug, then install air hose adapter into spark plug hole and apply air pressure to hold valves in place. Apply a pressure of 490 kPa (5 kg/cm2, 71 psi).





Method C: Install spark plug with suitable washer into spark plug hole from combustion chamber side.





13. Remove valve oil seal.





14. Apply engine oil to new valve oil seal and install it with Tool.

OIL SEAL INSTALLATION DIRECTION





^ Install new oil seal in the direction shown in the figure.