Hyundai Palisade: Cylinder Head Assembly / CVVT & Camshaft

Hyundai Palisade (LX2) 2020-2024 Service Manual / Engine Mechanical System / Cylinder Head Assembly / CVVT & Camshaft

Components and components location
Components

Hyundai Palisade. Components and components location

1. RH exhaust CVVT
2. RH intake CVVT
3. LH intake CVVT
4. LH exhaust CVVT

Repair procedures
Removal
Hyundai Palisade. Repair procedures   
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
LH CVVT & Camshaft
1.
Set No.1 cylinder to TDC (Top dead center) on compression stroke.
(1)
Turn the crankshaft damper pulley clockwise and align its groove with the timing mark "T" of the lower timing chain cover.

Hyundai Palisade. Repair procedures

(2)
Remove the LH cylinder head cover.
(Refer to Cylinder Head Assembly - "Cylinder Head Cover")
(3)
Check that the mark of the camshaft timing sprockets are in straight line on the cylinder head surface as shown in the illustration. If not, turn the crankshaft clockwise one revolution (360°).
[LH intake]

Hyundai Palisade. Repair procedures

[LH exhaust]

Hyundai Palisade. Repair procedures

[RH intake]

Hyundai Palisade. Repair procedures

[RH exhaust]

Hyundai Palisade. Repair procedures

2.
Remove the timing chain.
(Refer to Timing System - "Timing Chain")
3.
Remove the fuel pump bracket (A)

Hyundai Palisade. Repair procedures

4.
Remove the LH exhaust camshaft oil control valve (OCV) (A).

Hyundai Palisade. Repair procedures

5.
Remove the LH intake CVVT assembly (A) and exhaust CVVT assembly (B).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
To prevent impurities from entering intake OCV & center bolt, wear rubber gloves.
When removing the CVVT assembly bolt, place a wrench at position (A) to prevent the camshaft from rotating.

Hyundai Palisade. Repair procedures

6.
Remove the LH camshaft bearing cap (A) and thrust bearing cap (B).

Hyundai Palisade. Repair procedures

7.
Remove the LH intake camshaft (A) and exhaust camshaft (B).

Hyundai Palisade. Repair procedures

RH CVVT & Camshaft
1.
Set No.1 cylinder to TDC (Top dead center) on compression stroke.
(1)
Turn the crankshaft damper pulley clockwise and align its groove with the timing mark "T" of the lower timing chain cover.

Hyundai Palisade. Repair procedures

(2)
Remove the RH cylinder head cover.
(Refer to Cylinder Head Assembly - "Cylinder Head Cover")
(3)
Check that the mark of the camshaft timing sprockets are in straight line on the cylinder head surface as shown in the illustration. If not, turn the crankshaft clockwise one revolution (360°).
[LH intake]

Hyundai Palisade. Repair procedures

[LH exhaust]

Hyundai Palisade. Repair procedures

[RH intake]

Hyundai Palisade. Repair procedures

[RH exhaust]

Hyundai Palisade. Repair procedures

2.
Remove the timing chain.
(Refer to Timing System - "Timing Chain")
3.
Remove the RH exhaust camshaft oil control valve (OCV) (A).

Hyundai Palisade. Repair procedures

4.
Remove the RH intake CVVT assembly (A) and exhaust CVVT assembly (B).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
To prevent impurities from entering intake OCV & center bolt, wear rubber gloves.
When removing the CVVT assembly bolt, place a wrench at position (A) to prevent the camshaft from rotating.

Hyundai Palisade. Repair procedures

5.
Remove the RH camshaft bearing cap (A) and thrust bearing cap (B).

Hyundai Palisade. Repair procedures

6.
Remove the RH intake camshaft (A) and exhaust camshaft (B).

Hyundai Palisade. Repair procedures

Inspection
Continuous Variable Valve Timing (CVVT) Assembly
1.
Inspect the exhaust CVVT for smooth rotation.
(1)
Clamp the camshaft using a vise. Be careful not to damage the cam lobes and journals in the vise.
(2)
Check that the exhaust CVVT is locked by turning it clockwise or counterclockwise. It must not rotate.
(3)
Intake CVVT : Seal one of the two advance holes in the camshaft journal with tape.
Exhaust CVVT : Seal one of the two retard holes in the camshaft journal with tape.
[Exhaust]

Hyundai Palisade. Repair procedures

(4)
Exhaust CVVT : Apply approx. 150 kPa (1.5 kgf/cm², 21 psi) of compressed air into the unsealed advance hole to release the lock.
Hyundai Palisade. Repair procedures   
Cover the oil paths with a piece of cloth when applying compressed air to prevent oil from spraying.
(5)
With compressed air applied, rotate the exhaust CVVT into the retard direction (clockwise) and check that the CVVT turns smoothly.
Exhaust CVVT phasing range
25°± 0°30’ (from the most retarded position to the most advanced position)

Hyundai Palisade. Repair procedures

(6)
Rotate the exhaust CVVT into the most advanced position (counterclockwise) and then check that the CVVT is locked.
Camshaft
1.
Inspect cam lobes.
Using a micrometer, measure the cam lobe height.
Cam height
[Standard value]
Intake : 47.2 mm (1.858 in.)
Exhaust : 45.8 mm (1.803 in.)

Hyundai Palisade. Repair procedures

If the cam lobe height is below specification, 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 journals.

Hyundai Palisade. Repair procedures

(4)
Install the bearing cap (A) and thrust bearing cap (B) to the specified torque.
Tightening torque
1st step : 5.8 N.m (0.6 kgf.m, 4.3 lb.ft)
2nd step : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
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 journal : 0.037 - 0.067 mm (0.0015 - 0.0026 in.)
No.2,3,4 journal : 0.030 - 0.067 mm (0.0012 - 0.0026 in.)
Exhaust
No.1 journal : 0.027 - 0.057 mm (0.0010 - 0.0022 in.)
No.2,3,4 journal : 0.030 - 0.067 mm (0.0012 - 0.0026 in.)

Hyundai Palisade. Repair procedures

If the oil clearance is greater than specification, replace the camshaft.
If the oil clearance is still over the specification after replacing the camshaft, replace the bearing caps and cylinder head as an assembly.
(7)
Completely remove the plastigage.
(8)
Remove the camshafts.
3.
Inspect the camshaft end play.
(1)
Install the camshafts.
(2)
Install the bearing cap (A) and thrust bearing cap (B) to the specified torque.
Tightening torque
1st step : 5.8 N.m (0.6 kgf.m, 4.31 lb.ft)
2st step : 9.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures

(3)
Using a dial indicator, measure the end play while moving the camshaft back and forth.
Camshaft end play
[Standard value] :
Intake : 0.04 - 0.18 mm (0.0016 - 0.0071 in.)
Exhaust : 0.02 - 0.18 mm (0.0008 - 0.0071 in.)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures

If the end play is greater than specification, replace the camshaft.
If the end play is still over the specification after replacing the camshaft, replace the bearing caps and cylinder head as an assembly.
(4)
Remove the camshafts.
Installation
Hyundai Palisade. Repair procedures   
Apply a light coat of engine oil on camshaft journals.
Assemble the key groove of camshaft rear side to the same level of head top surface.
Be cautious not to damage the right and left banks, and intake and exhaust sides when assembling.
Intake camshaft

Hyundai Palisade. Repair procedures

As for camshaft identification (A, B, C, D, E), refer to the table below.
Displacement
Outer diameter
LH
RH
Intake camshaft
-
A : 30 mm (1.1811 in.)
B : 27 mm (1.0630 in.)
C : 30 mm (1.1811 in.)
D : 30 mm (1.1811 in.)
E : 30 mm (1.1811 in.)

Exhaust camshaft

Hyundai Palisade. Repair procedures

As for camshaft identification (A, B, C, D), refer to the table below.
Displacement
Outer diameter
LH
RH
Exhaust camshaft
A : 27 mm (1.0630 in.)
A : 27 mm (1.0630 in.)
B : 27 mm (1.0630 in.)
B : 27 mm (1.0630 in.)
C : 30 mm (1.1811 in.)
C : 30 mm (1.1811 in.)
D : 27 mm (1.0630 in.)
D : 30 mm (1.1811 in.)

LH CVVT & Camshaft
1.
Install the LH intake camshaft (A) and exhaust camshaft (B).

Hyundai Palisade. Repair procedures

2.
Install the LH camshaft bearing cap (A) and thrust bearing cap (B) with specified torque.
Tightening torque
1st step :
5.8 N.m (0.6 kgf.m, 4.3 lb.ft)
2nd step :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
Be sure to install the thrust bearing cap bolts and the bearing cap bolts in the correct place.
Be cautious not to damage the right and left banks, and intake and exhaust sides when assembling.

Hyundai Palisade. Repair procedures

A : L (LH), R (RH)
B : I (Intake), E (Exhaust)
C : Journal number
D : Front mark
Rotate the crankshaft until the pistons are located 10mm (0.3937in.) below the top of cylinder block so that it doesn't come into contact with the valves.
3.
Install the LH intake CVVT assembly (A) and exhaust CVVT assembly (B).
Tightening torque
Intake : 24.5 N.m (2.5 kgf.m, 18.1 lb.ft) + 55 - 61°
Exhaust : 64.7 - 76.5 N.m (6.6 - 7.8 kgf.m, 47.7 - 56.4 lb.ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
To prevent impurities from entering intake OCV & center bolt, wear rubber gloves.
When installing intake OCV & center bolt, temporarily install by hand, and then fully install by using a tool.
When installing intake OCV & center bolt, install to the specified tightening torque.
Do not use any dropped intake OCV & center bolt.
When installing intake CVVT, apply engine oil on cross section (A) of OCV.

Hyundai Palisade. Repair procedures

When installing CVVT assembly bolt, hold A section of camshaft with a wrench.
Be careful not to damage cylinder head and camshaft.

Hyundai Palisade. Repair procedures

Install camshaft-inlet to dowel pin of CVVT assembly.
When doing this, be careful not to install on the oil hole of camshaft-inlet.
Hold the hexagonal head wrench portion of the camshaft with a vise, and install the bolt and CVVT assembly.
Do not rotate CVVT assembly when installing the camshaft to the dowel pin of CVVT assembly.
4.
Install the LH exhaust camshaft oil control valve (OCV) (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Hyundai Palisade. Repair procedures

5.
Install the fuel pump bracket (A).
Tightening torque :
18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb.ft)

Hyundai Palisade. Repair procedures

6.
Install in the reverse order of removal.
RH CVVT & Camshaft
1.
Install the RH intake camshaft (A) and exhaust camshaft (B).

Hyundai Palisade. Repair procedures

2.
Install the RH camshaft bearing cap (A) and thrust bearing cap (B) to the specified torque.
Tightening torque
1st step : 5.8 N.m (0.6 kgf.m, 4.3 lb.ft)
2nd step :9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
Be sure to install the thrust bearing cap bolts and the bearing cap bolts in the correct place.
Be cautious not to damage the right and left banks, and intake and exhaust sides when assembling.

Hyundai Palisade. Repair procedures

A : L (LH), R (RH)
B : I (Intake), E (Exhaust)
C : Journal number
D : Front mark
Rotate the crankshaft until the pistons are located 10mm (0.3937in.) below the top of cylinder block so that it doesn't come into contact with the valves.
3.
Install the RH intake CVVT assembly (A) and exhaust CVVT assembly (B).
Tightening torque
Intake : 24.5 N.m (2.5 kgf.m, 18.1 lb.ft) + 55 - 61°
Exhaust : 64.7 - 76.5 N.m (6.6 - 7.8 kgf.m, 47.7 - 56.4 lb.ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
To prevent impurities from entering intake OCV & center bolt, wear rubber gloves.
When installing intake OCV & center bolt, temporarily install by hand, and then fully install by using a tool.
When installing intake OCV & center bolt, install to the specified tightening torque.
Do not use any dropped intake OCV & center bolt.
When installing intake CVVT, apply engine oil on cross section (A) of OCV.

Hyundai Palisade. Repair procedures

When installing CVVT assembly bolt, hold A section of camshaft with a wrench.
Be careful not to damage cylinder head and camshaft.

Hyundai Palisade. Repair procedures

Install camshaft-inlet to dowel pin of CVVT assembly.
When doing this, be careful not to install on the oil hole of camshaft-inlet.
Hold the hexagonal head wrench portion of the camshaft with a vise, and install the bolt and CVVT assembly.
Do not rotate CVVT assembly when installing the camshaft to the dowel pin of CVVT assembly.
4.
Install the RH exhaust camshaft oil control valve (OCV) (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Hyundai Palisade. Repair procedures

5.
Install in the reverse order of removal.

    Cylinder Head Cover

    Components and components location Components 1. LH cylinder head cover 2. LH cylinder head cover gasket 3. LH exhaust CVVT OCV cap 4...

    Cylinder Head

    Components and components location Components 1. RH intake camshaft OCV 2. Camshaft thrust bearing cap 3. Camshaft bearing cap 4...

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