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Home >> Nissan-Datsun >> 2007 >> Sentra SE-R >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Engine Mechanical (Qr25DE) >> Oil Seal >> Removal and installation of Valve Oil Seal >> Removal

Removal and installation of Valve Oil Seal: Removal

  1. Remove camshaft. Refer to "REMOVAL ".
  2. Remove valve lifter. Refer to "REMOVAL ".
  3. Rotate crankshaft, and set piston whose oil seal is to removed to top dead center. This prevents valve from dropping inside cylinder.
    CAUTION: When rotating crankshaft, be careful to avoid scarring the front cover with the timing chain.
  4. Remove valve collet, valve spring retainer and valve spring using Tool.

    Tool number 

    : KV10116200 (J-26336-B) 

    : KV10115900 (J-26336-20) 

    Fig 1: Identifying Valve Collet
    G04885790
  5. Remove valve oil seal using Tool.

    Tool number : KV10107902 (J-38959) 

    Fig 2: Removing Valve Oil Seal
    G04899763