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Camshaft Inspection

  1. Put the rocker shaft holder bridge/rocker shaft holders on the cylinder head, then tighten the bolts to the specified torque.
    Specified Torque
    6 x 1.0 mm
    (1)−(10):
    15 N·m (1.5 kgf·m, 11 lbf·ft)
    (11):
    10 N·m (1.0 kgf·m, 7.2 lbf·ft)

  1. Seat the camshaft by pushing it toward the rear of the cylinder head.
L15A8 engine
L13Z3 engine

  1. Zero the dial indicator against the end of the camshaft. Push the camshaft back and forth, and read the end play. If the end play is beyond the service limit, replace the thrust cover and recheck. If it is still beyond the service limit, replace the camshaft.
    Camshaft End Play
    Standard (New):
    0.05−0.25 mm (0.002−0.010 in.)
    Service Limit:
    0.5 mm (0.02 in.)

  1. Wipe the camshaft clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored, or excessively worn.

  1. Measure the diameter of each camshaft journal.

  1. Zero the gauge to the journal diameter.

  1. Clean the camshaft bearing surfaces in the cylinder head. Measure the inside diameter of each camshaft bearing surface, and check for an out-of-round condition.
    • If the camshaft-to-holder clearance is within limits, go to Step 12 .
    • If the camshaft-to-holder clearance is beyond the service limit, and the camshaft has been replaced, replace the cylinder head.
    • If the camshaft-to-holder clearance is beyond the service limit, and the camshaft has not been replaced, go to Step 11 .
    Camshaft-to-Holder Oil Clearance
    Standard (New):
    0.045−0.084 mm (0.0018−0.0033 in.)
    Service Limit:
    0.100 mm (0.004 in.)


  1. Check the total runout with the camshaft supported on V-blocks.
    • If the total runout of the camshaft is within the service limit, replace the cylinder head.
    • If the total runout is beyond the service limit, replace the camshaft, and recheck the oil clearance. If the oil clearance is still out of tolerance, replace the cylinder head.
    Camshaft Total Runout
    Standard (New):
    0.03 mm (0.001 in.) max.
    Service Limit:
    0.04 mm (0.002 in.)


  1. Measure the cam lobe height.

    Cam Lobe Height Standard (New):

    INTAKE
    EXHAUST
    L15A8 engine
    PRI
    35.162 mm (1.3843 in.)
    35.614 mm (1.4021 in.)
    SEC
    30.529 mm (1.2019 in.)
    L13Z3 engine
    PRI
    34.290 mm (1.3500 in.)
    35.047 mm (1.3798 in.)
    SEC
    30.529 mm (1.2019 in.)

    PRI: Primary
    SEC: Secondary
    IN: Intake
    EX: Exhaust
    C/C: Cam Chain