Repair Procedures: Inspection: Camshaft

Using a micrometer, measure the cam lobe height.

Cam height 

[Standard value]

Intake: 44.10 - 44.30 mm (1.7362 - 1.7440 in.)

Exhaust: 44.90 - 45.10 mm (1.7677 - 1.7756 in.)

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If the cam lobe height is less than standard, replace the camshaft.

1. Clean the bearing caps and camshaft journals.
2. Place the camshafts on the cylinder head.
3. Lay a strip of plastigage across each of the camshaft journal.

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4. Install the bearing caps.
   NOTE:

   • Do not turn the camshaft.
5. Remove the bearing caps.
6. Measure the plastigage at its widest point.

   Bearing oil clearance 

   [Standard value]

   Intake:

   No. 1: 0.029 - 0.057 mm (0.00114 - 0.00224 in.)

   No. 2, 3, 4, 5: 0.037 - 0.067 mm (0.00146 - 0.00264 in.)

   Exhaust:

   No. 1: 0.004 - 0.036 mm (0.00016 - 0.00142 in.)

   No. 2, 3, 4, 5: 0.037 - 0.067 mm (0.00146 - 0.00264 in.)

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   If the oil clearance is greater than maximum, replace the camshaft. If necessary, replace cylinder head.

7. Completely remove the plastigage.
8. Remove the camshafts.

1. Install the camshafts.
2. Using a dial indicator, measure the end play while moving the camshaft back and forth.

   Camshaft end play 

   [Standard value]: 0.04 - 0.16 mm (0.0016 - 0.0063 in.)

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   If the end play is greater than maximum, replace the camshaft. If necessary, replace cylinder head.

3. Remove the camshafts.