Camshaft
Camshaft Removal
•
Remove:
Camshaft Sprocket (see Camshaft Sprocket Removal)
Rocker Arms (see Rocker Arm Removal)
Camshaft [A]
Camshaft Installation
•
Clean the camshaft with the high flash-point solvent.
•
Apply molybdenum disulfide oil solution to all cam parts,
journal and bearing.
•
Install the camshaft into the cylinder head.
•
Install the removed parts (see appropriate chapters).
○
Check and adjust the valve clearance (see Valve Clear-
ance Inspection in the Periodic Maintenance chapter).
Cam Wear Inspection
•
Remove the camshaft (see Camshaft Removal).
•
Measure the height [A] of each cam with a micrometer.
If the cams are worn down past the standard, replace the
camshaft.
Cam Height
Standard:
Exhaust
34.1721 mm (1.34535 in.)
Intake
34.2987 mm (1.35033 in.)
Camshaft Bearing Inspection
•
Visually inspect each camshaft bearing [A].
If there is any damage, replace the camshaft.
•
Turn the bearing back and forth while checking for rough-
ness or binding.
If roughness or binding is found, replace the camshaft.
If it is noisy, does not spin smoothly, or has any rough
spots, replace the camshaft.
ENGINE TOP END 5-13
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