Frontier 2WD V6-3.3L (VG33E) (2003)
Valve Guide Seal: Service and Repair
VALVE OIL SEAL
1. Remove the rocker cover.
2. Remove the rocker shaft assembly and valve lifters with the valve lifter guide.
3. Remove the valve spring using Tool as shown.
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The piston concerned should be set at TDC to prevent the valve from falling into the cylinder bore.
4. Remove the valve oil seals. When removing the intake side valve oil seal, use Tool or a suitable tool.
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When removing the exhaust side valve oil seal, pull it out with a suitable tool.
5. Apply new engine oil to the new valve oil seal and install it to specification as shown.
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When installing intake side valve oil seal, use Tool as shown.
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When installing exhaust side valve oil seal, set it by hand.