Camshaft Inspection (2016-18): Inspection

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2. Rear: Put the rocker shaft holders and the rear rocker arm oil control valve on the rear cylinder head, then tighten the bolts to the specified torque.

Fig 1: Rear Rocker Shaft Holders Bolt Tightening Sequence

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3. Seat the camshaft by pushing it toward the rear of the cylinder head

4. 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 cylinder head. If it is still beyond the service limit, replace the camshaft.

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5. Remove the camshaft thrust cover (A), then pull out the camshaft (B) 6. Wipe the camshaft clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored, or excessively worn.

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7. Measure the diameter of each camshaft journal.

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8. Zero the gauge (A) to the journal diameter.

9. 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 11.
• 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 10.

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Courtesy of HONDA, U.S.A., INC.	Check total runout with the camshaft supported on V-blocks: If the total runout of the camshaft is within the standard, replace the cylinder head. If the total runout is beyond the standard, 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 (0.0012 in) max.

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11.Measure the cam lobe height. NOTE:  When measuring the intake cam lobe height of the rear bank camshafts, measure the secondary low and high cam lobes.