Repair Procedures: Inspection: Camshaft

Using a micrometer, measure the cam lobe height.

Cam height 

[Standard value]

Intake: 44.2 mm (1.7402 in.)

Exhaust: 45.0 mm (1.7717 in.)

Fig 1: Measuring Cam Lobe Height

Courtesy of HYUNDAI MOTOR AMERICA

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.
   Fig 2: Inspecting Camshaft Journal Clearance

   Courtesy of HYUNDAI MOTOR AMERICA
4. Install the bearing caps.
   CAUTION: 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 ~ 0.032 mm (0 ~ 0.0013 in.)

   No. 2, 3, 4, 5: 0.037 ~ 0.069 mm (0.0015 ~ 0.0027 in.) Exhaust:

   No. 1: 0.004 ~ 0.036 mm (0.00015 ~ 0.00141 in.) No. 2, 3, 4, 5: 0.041 ~ 0.073 mm (0.0016 ~ 0.0029 in.) [Limit]

   Intake:

   No. 1: 0.090 mm (0.00354 in.)

   No. 2, 3, 4, 5: 0.120 mm (0.00472 in.)

   Exhaust:

   No. 1: 0.090 mm (0.00354 in.)

   No. 2, 3, 4, 5: 0.120 mm (0.00472 in.)

   Fig 3: Measuring Plastigage At Widest Point

   Courtesy of HYUNDAI MOTOR AMERICA

   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.)

   [Limit]: 0.20 mm (0.0078 in.)

   Fig 4: Inspecting Camshaft End Play

   Courtesy of HYUNDAI MOTOR AMERICA

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

3. Remove the camshafts.