Acura 3.5 RL Manual page 195

4. Remove the bolts, then remove the camshaft hold-
ers from the cylinder head.
5. Lift the camshaft out of the cylinder head, wipe it
clean, then inspect the lift ramps. Replace the
camshaft if any lobes are pitted, scored, or excessively
worn.
6. Clean the camshaft bearing surfaces in the cylinder
head, then set the camshaft back in place.
7. Place a plastigage strip across each journal.
8. Install the camshaft holders, then tighten the bolts
to the specified torque shown on the previous page.
9. Remove the camshaft holders. Measure the widest
portion of plastigage on each journal.
Camshaft-to-Holder Oil Clearance:
Standard (New): 0.050 - 0.089 mm
(0.0020 - 0.0035 in)
Service Limit: 0.10 mm (0.004 in)
PLASTIGAGE STRIP
If camshaft-to-holder oil clearance is out of toler-
ance:
And the camshaft has already been replaced,
you must replace the cylinder head.
If the camshaft has not been replaced, first check
the total runout with the camshaft supported on
V-blocks.
Camshaft Total Runout:
Standard (New): 0.03 mm (0.001 in) max.
Service Limit: 0.04 mm (0.002 in)
Rotate camshaft
while measuring.
If the total runout of the camshaft is within toler-
ance, replace the cylinder head.
If the total runout is out of tolerance, replace the
camshaft and recheck. If the oil clearance is still
out of tolerance, replace the cylinder head.
11. Check cam lobe height wear.
Cam Lobe Height Standard (New):
INTAKE 40.175 mm (1.5817 in)
EXHAUST 37.878 mm (1.4913 in)
Check this area for wear.