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Home >> Geo >> 1994 >> Prizm Base, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.6L 4-CYL - VIN [6] & 1.8L 4-CYL - VIN [8] >> Removal & Installation >> Camshaft >> Removal

Removal & Installation: Camshaft: Removal

  1. Remove timing belt, valve cover and camshaft sprocket. See TIMING BELT  under REMOVAL & INSTALLATION. Using dial indicator, check camshaft end play before removing camshaft.
  2. If end play is greater than specification, replace camshaft or cylinder head. See CAMSHAFT  table under ENGINE SPECIFICATIONS.
    NOTE: Camshaft bearing caps are marked either with an "I" for intake camshaft or an "E" for exhaust camshaft. Camshaft bearing caps are numbered starting with No. 1 at timing belt end of cylinder head. Ensure arrow on bearing cap points toward timing belt end of engine.
  3. To remove intake camshaft, rotate camshafts so knock pin on exhaust camshaft is at 10 o'clock position and service bolt hole on intake camshaft is at 12 o'clock position. See Fig 1 . Remove No. 1 camshaft bearing caps on exhaust and intake camshafts. Install a bolt with dimensions of 6mm x 1.0mm x approximately 18mm in length into service bolt hole in intake camshaft gear. See Fig 2 .
  4. Loosen remaining intake camshaft bearing caps evenly in sequence. See Fig 3 . Remove camshaft bearing caps and remove intake camshaft. Ensure camshaft remains level and parallel to cylinder head during removal.
    Fig 1: Positioning Intake Camshaft For Removal
    G91E00418Courtesy of GENERAL MOTORS CORP.
    Fig 2: Installing Service Bolt
    G91F00419Courtesy of GENERAL MOTORS CORP.
    Fig 3: Intake Camshaft Bearing Cap Bolt Loosening Sequence
    G93E01426Courtesy of GENERAL MOTORS CORP.
  5. To remove exhaust camshaft, rotate camshaft so knock pin is positioned in 5 o'clock position. See Fig 4 . Note location and direction of camshaft bearing caps.
  6. Loosen remaining exhaust camshaft bearing caps evenly in sequence. See Fig 5 . Remove camshaft bearing caps, camshaft and oil seal. If camshaft binds during removal procedure DO NOT force camshaft from cylinder head, retighten No. 3 camshaft bearing cap. Loosen bolts evenly while lifting camshaft. See Fig 6 .
Fig 4: Positioning Exhaust Camshaft For Removal
G91J00421Courtesy of GENERAL MOTORS CORP.
Fig 5: Exhaust Camshaft Bearing Cap Bolt Loosening Sequence
G93A01429Courtesy of GENERAL MOTORS CORP.
Fig 6: Removing Stuck Camshaft
G93I01428Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.