Repair Procedures: Inspection: Camshaft

WARNING: This page is about a different variant/trim than selected.

Measure the height of the cam lobe using a micrometer and check the surface of the cam lob for wear and tear. If necessary, replace the camshaft.
Cam height

Intake: 44.15 mm (1.738 in.)

Exhaust: 43.55 mm (1.715 in.)

Fig 1: Measuring Height Of Cam Lobe Using Micrometer
Courtesy of KIA MOTORS AMERICA, INC.
Check the surface of the camshaft journal for wear and tear. If the camshaft journal is excessively damaged, replace the camshaft.
Inspect the camshaft journal clearance.
1. Clean the camshaft journals and bearing caps.
2. Place the camshafts in the cylinder head.
3. Lay a strip of plastigauge across each of the camshaft journals.
  
  Fig 2: Inspecting Camshaft Journal Clearance
  Courtesy of KIA MOTORS AMERICA, INC.
4. Install the bearing caps and tighten the bolts to the specified torque.
  Tightening torque
  
  M6 bolts:
  
  11.8 - 13.7N.m (1.2 - 1.4kgf.m, 8.7 - 10.1lb.ft)
  
  M8 bolts:
  
  18.6 - 22.6N.m (1.9 - 2.3kgf.m, 13.7 - 16.6lb.ft)
  
  NOTE: Do not turn the camshaft.
5. Remove the bearing caps.
6. Measure the plastigauge at the widest point. If the clearance is greater than the specification, replace the camshaft. If necessary, replace the bearing caps and the cylinder head as a set.
  Camshaft bearing cap oil clearance
  
  Standard:
  
  0.027 - 0.058 mm (0.0011 - 0.0023 in.)
  
  Limit: 0.1 mm (0.0039 in.)
  
  Fig 3: Measuring Camshaft Bearing Cap Oil Clearance
  Courtesy of KIA MOTORS AMERICA, INC.
Inspect the camshaft end play.
1. Inspect the camshaft end play.
2. Measure the end play while moving the camshaft back and forth using a dial gauge. If the end play is greater than the specification, replace the camshaft. If necessary, replace the bearing caps and the cylinder head as a set.
  Camshaft end play
  
  Standard: 0.1 - 0.2 mm (0.0039 - 0.0079 in.)
  
  Fig 4: Inspecting Camshaft End Play With Dial Gauge
  Courtesy of KIA MOTORS AMERICA, INC.
3. Remove the camshafts.