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Camshaft Installation Note

WARNING: This page is about a different variant/trim than selected.
  1. Apply SAE 90 gear oil or equivalent, or engine oil to the positions shown in the figure.
    CAUTION:
    • Apply 0.05 ml {0.05 cc, 0.003 in 3 } or less of oil to area A in the figure.
    G16379499Courtesy of MAZDA MOTORS CORP.
  2. Apply SAE 90 gear oil or equivalent, or engine oil to the following locations of each camshaft.
    • Thrust surface of front journal (both surfaces front and back)
    CAUTION:
    • Be careful not to let oil adheres the engine front cover installation surface. If oil adheres to the engine front cover installation surface, a sealing malfunction may occur when the engine front cover is installed.
    • If oil adheres to the engine front cover installation surface, remove any oil completely.
    NOTE:
    • If oil is applied to the front camshaft cap, oil should not be applied to the thrust surface of the front journal.
  3. Install the camshaft with the timing chain alignment marks aligned as shown in the figure.
    G16379500Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • The timing mark of (VIN Y) is not completely parallel with the upper surface of the cylinder head.
  4. Apply SAE 90 gear oil or equivalent, or engine oil to the central area of each journal on the camshaft.
    G16379501Courtesy of MAZDA MOTORS CORP.
  5. Apply SAE 90 gear oil or equivalent, or engine oil to the thrust surface of the front camshaft cap.
    CAUTION:
    • Be careful not to let oil adheres the engine front cover installation surface. If oil adheres to the engine front cover installation surface, a sealing malfunction may occur when the engine front cover is installed.
    • If oil adheres to the engine front cover installation surface, remove any oil completely.
    NOTE:
    • If oil is applied to the front journal thrust surface of each camshaft, oil should not be applied to the front camshaft cap.
  6. Apply sealant (LOCTITE 962T, 518, 272 or equivalent) to the rear camshaft cap installation area on the exhaust side or the rear camshaft caps on the exhaust side of the cylinder head.
    NOTE:
    • To prevent engine oil leakage, apply sealant to the rear camshaft cap installation area on the exhaust side or the rear camshaft caps on the exhaust side of the cylinder head, and seal the journal.
    G16379502Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Do not spill sealant on the journal.

    Sealant agent bead width 

    1-3 mm {0.04-0.11 in}

  7. Install the camshaft caps in the marked number order, and temporarily tighten the camshaft cap installation bolts in two or three passes evenly.
  8. Tighten the camshaft cap installation bolts in two steps in the order shown in the figure.
    Fig 1: Camshaft Cap Installation Bolts Tightening Sequence
    G16379503Courtesy of MAZDA MOTORS CORP.