Repair Procedures: Inspection: Camshaft

Using a micrometer, measure the cam lobe height.

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

Cam Height 

Intake: 39.0 mm (1.5354 in.)

Exhaust: 39.0 mm (1.5354 in.)

Fig 1: Measure Cam Lobe Height Using Micrometer

Courtesy of KIA MOTORS AMERICA, INC.

If the journal is worn excessively, 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: Inspect Camshaft Journal Clearance

   Courtesy of KIA MOTORS AMERICA, INC.
4. Install the bearing caps and tighten the bolts with specified torque.

   Tightening Torque 

   M6 bolts:

   11.8 ~ 13.7 N.m (1.2 ~ 1.4 kgf.m, 8.7 ~ 10.1 lb-ft)

   M8 bolts:

   18.6 ~ 22.6 N.m (1.9 ~ 2.3 kgf.m, 13.7 ~ 16.6 lb-ft)

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

   If the oil clearance is greater than specification, replace the camshaft. If necessary, replace the bearing caps and cylinder head as a set.

   Bearing Oil Clearance 

   Standard:

   0.032 ~ 0.062 mm (0.00126 ~ 0.00244 in.)

   Fig 3: Measure Plastigage At Widest Point

   Courtesy of KIA MOTORS AMERICA, INC.

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

   If the end play is greater than specification, replace the camshaft.

   If necessary, replace the bearing caps and cylinder head as a set

   Camshaft End Play 

   Standard:

   0.10 ~ 0.19 mm (0.0039 ~ 0.0075 in.)

   Fig 4: Inspect Camshaft End Play

   Courtesy of KIA MOTORS AMERICA, INC.
3. Remove the camshafts.