Kia Carnival (2007 year). Instruction — part 479

1. Inspect the valve stems and valve guides.

(1) Using a caliper gauge, measure the innner diameter of valve guide.

Valve guide inner diameter :
7.010~7.030mm (0.2760~0.2768in)

(2) Using a micrometer, measure the outer diameter of valve stem.

Valve stem outer diameter
Intake : 6.965~6.980mm (0.2742~0.2748in)
Exhaust : 6.945~6.960mm (0.2734~0.2740in)

(3) Subtract the valve stem outer diameter measurement from the valve guide innner diameter measurement.

Valve stem- to-guide clearance
Intake : 0.030 ~ 0.065mm (0.0012 ~ 0.0026in)
Exhaust : 0.050 ~ 0.085mm (0.0020 ~ 0.0033in)

If the clearance is greater than maximum, replace the valve and valve guide.

2. Inspect the valves.

(1) Check the valve is ground to the correct valve face angle.

(2) Check that the surface of valve for wear.

If the valve face is worn, replace the valve.

(3) Check the valve head margin thickness.

If the margin thickness is less than minimum, replace the valve.

Margin
Intake : 1.7mm (0.0669in)
Exhaust : 1.6mm (0.0630in)

(4) Check the surface of valve stem tip for wear.

If the valve stem tip is worn, replace the valve.

3. Inspect the valve seats.

(1) Check the valve seat for evidence of overheating and improper contact with the valve face.

Replace the seat if necessary.

(2) Before reconditioning the seat, check the valve guide for wear. If the valve guide is worn, replace it, then

recondition the seat.

(3) Recondition the valve seat with a valve seat grinder or cutter. The valve seat contact width should be within

4. Inspect the valve springs.

(1) Using a steel square, measure the out-of-square of valve spring.

(2) Using a vernier calipers, measure the free length of valve spring.

Valve spring
Free height : 52.477mm (2.0660in)
Installed load: 51.7±4.1kg/40.0mm(41.4±2.0lb/1.5748in)
Compressed load:86.3±6.9kg/31.65mm(41.4±2.0lb/1.2461in) (Intake)
86.9±6.9kg/31.50mm(41.4±2.0lb/1.2402in) (Exhaust)
Out of square : Less than 2°

If the loads is not as specified, replace the valve spring.

CAMSHAFT

1. Inspect the cam lobes.

Using a micrometer, measure the cam lobe height.

Cam height
Intake : 39.397~39.597mm (1.5511~1.5589in)
Exhaust : 39.4932~39.6932mm (1.5548~1.5627in)

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

2. Inspect the camshaft journal clearance.

(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.

(4) Install the bearing caps and tighten the bolts with specified torque.

Do not turn the camshaft.

(5) Remove the bearing caps.

(6) Measure the plastigage at its widest point.

Bearing oil clearance
Standard : 0.040 ~ 0.080mm (0.0016 ~ 0.0031in)

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

(7) Completely remove the plastigage.

(8) Remove the camshafts.

3. Inspect the camshaft end play.

(1) Install the camshafts.

(2) Using a dial indicator, measure the end play while moving the camshaft back and forth.

Camshaft end play
Standard : 0.08 ~ 0.17mm (0.0031 ~ 0.0067in)

If the end play is greater than maximum, replace the camshaft. If necessary, replace the bearing caps and
cylinder head as a set.

(3) Remove the camshafts.

Rockerarm and rockerarm shaft

1. Inspect the rockerarm and rockerarm shaft.

(1) Measure the inner diameter of the rocker arm, using a caliper gauge.

Rockerarm inner diameter
20.000~20.027mm (0.7874~0.7885in)

(2) Measure the inner diameter of the rocker arm, using a micro meter.