Kia Cee'd: Cylinder Head Assembly / Camshaft Repair procedures

Kia Cee'd JD Service Manual / Engine Mechanical System / Cylinder Head Assembly / Camshaft Repair procedures

Removal

1.	Remove the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover")

2.	Remove the timing chain cover. (Refer to Timing System - "Timing Chain Cover")

3.	Remove the timing chain. (Refer to Timing System - "Timing Chain")

4.	Remove the intake CVVT assembly and exhaust CVVT assembly. (Refer to Cylinder Head Assembly - "CVVT Assembly")

5.	Remove the camshaft bearing caps (A) with the order below.

Inspection

Inspect the cam height.

Using a micrometer, measure the cam height.

Cam height

Intake : 44.15mm (1.7382in)

Exhaust : 43.55mm (1.7146in)

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

2.	Check the cranshaft journal for wear. If the journal is worn excessively, replace the camshaft.

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.

Tightening torque

1st step

M6 bolt : 5.9 N.m (0.6 kgf.m, 4.3 lb-ft)

M8 bolt : 9.8 N.m (1.0 kgf.m, 7.2 lb-ft)

2nd step

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)

Do not turn the camshaft.

(5)	Remove the bearing caps.

(6)

Measure the plastigage at its widest point.

Bearing oil clearance

Standard :

0.027 ~ 0.058mm (0.0011 ~ 0.0023in)

Limit : 0.1mm ( 0.0039in)

If the oil clearance is greater than specified, replace the camshaft.

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

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 : 0.1 ~ 0.2mm (0.0039 ~ 0.0079in)

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

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

(3)	Remove the camshafts.

Installation

Install the camshaft bearing caps(A) with the order below.

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)

2.	Install the intake CVVT assembly and exhaust CVVT assembly. (Refer to Cylinder Head Assembly - "CVVT Assembly")

3.	Install the timing chain. (Refer to Timing System - "Timing Chain")

4.	Install the timing chain cover. (Refer to Timing System - "Timing Chain Cover")

5.	Install the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover")

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