Prelude L4-1958cc DOHC (1989)
Camshaft: Testing and Inspection
INSPECTION
NOTE: Do not rotate camshaft during inspection; loosen the adjust screws before starting.
1. Seat camshafts by pushing them toward distributor end of cylinder head.
2. Zero dial indicator against end of distributor drive, then push camshafts back and forth, and read the end play.
Camshaft End Play:
Standard (New): 0.05-0.15 mm (0.002-0.006 in.)
Service Limit: 0.5 mm (0.02 in.)
3. Remove the camshaft holder bolts from the cylinder head.
NOTE: Unscrew the camshaft holder bolts, two turns at a time, in a criss-cross pattern, to prevent damaging valves or rocker arms.
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Lift camshaft out of cylinder head, wipe clean, then inspect lift ramps. Replace camshaft if lobes are pitted, scored, or excessively worn.
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Clean the camshaft bearing surfaces in the cylinder head, then set camshaft back in place.
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Insert plastigage strip across each journal.
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Install the camshaft holders and torque bolts to specification.
4. Measure widest portion of plastigage on each journal.
Camshaft Bearing Radial Clearance:
Standard (New): 0.050-0.089 mm (0.002-0.004 in.)
