Hyundai Santa Fe: Cylinder Head Assembly / CVVT & Camshaft. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Engine Mechanical System / Cylinder Head Assembly / CVVT & Camshaft. Repair procedures

Removal
  
•
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")
CVVT & Cam Shaft
1.
Remove the timing chain.
(Refer to Timing System - "Timing Chain")
2.
Remove the oil control valve (OCV) and center bolt (A).
[Intake oil control valve (OCV) and Center Bolt]

[Exhaust oil control valve (OCV) and Center Bolt]

  
•
To prevent impurities from entering exhaust oil control valve (OCV) & center bolt, wear rubber gloves.
•
When removing the exhaust oil control valve (OCV) and center bolt, hold the hexagonal portion (A) on the camshaft with a wrench to prevent the camshaft from rotating.
[Intake CVVT]

[Exhaust CVVT]
3.
Remove the intake CVVT (A).
4.
Remove the exhaust CVVT (A).
5.
Remove the camshaft front bearing cap (A) and camshaft bearing caps (B).
6.
Remove the camshaft (A).
[Intake Camshaft]

[Exhaust Camshaft]
CVVT & Cam Shaft Assembly
1.
Remove the timing chain.
(Refer to Timing System - "Timing Chain")
2.
Remove the camshaft front bearing cap (A) and camshaft bearing caps (B).
3.
Remove the intake camshaft & CVVT assembly (A).
4.
Remove the exhaust camshaft & CVVT assembly (A).
Inspection
Camshaft
1.
Inspect the cam lobes.
Using a micrometer, measure the cam lobe height.
Cam height
Intake : 39.7 - 39.9 mm (1.5630 - 1.5709 in.)
Exhaust : 37.9 - 38.1 mm(1.4921 - 1.5000 in.)

If the cam lobe height is less than standard, 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.
  
Do not turn the camshaft.
(5)
Remove the bearing caps.
(6)
Measure the plastigage at its widest point.
Bearing oil clearance
Intake :
NO.1 : 0.037 - 0.065mm (0.00146 - 0.00256 in)
NO.2,3,4,5 : 0.037 - 0.067mm (0.00146 - 0.00264 in)
Exhaust:
NO.1: 0.037 - 0.065mm (0.00146 - 0.00256 in)
NO.2,3,4,5 : 0.037 - 0.067mm (0.00146 - 0.00264 in)

If the oil clearance is greater than maximum, replace the camshaft. If necessary, replace cylinder head.
(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
0.09 - 0.23 mm (0.00354 - 0.00091 in.)

If the end play is greater than maximum, replace the camshaft. If necessary, replace cylinder head.
(3)
Remove the camshafts.
Installation
CVVT & Cam Shaft
1.
Install the camshaft (A).
[Intake Camshaft]

[Exhaust Camshaft]
2.
Install the camshaft front bearing cap (A) and camshaft bearing caps (B).

  
•
When installing the camshaft front bearing cap and camshaft bearing caps, tighten the bolts and nuts with pre-torque first, and then tighten the bolts and nuts with specified torque in the sequence shown.
Tightening torque :
Step 1
M8 Bolts : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
M6 Bolts : 4.9 - 7.8 N.m (0.5 - 0.8 kgf.m, 3.6 - 5.8 Ib-ft)
Step 2
M8 Bolts : 18.6 - 22.6 N.m (1.9 - 2.3 kgf.m, 13.7 - 16.6 lb-ft)
M6 Bolts : 11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

3.
Install the exhaust CVVT (A).
4.
Install the intake CVVT (A).
5.
Install the oil control valve (OCV) and center bolt (A).
Tightening torque :
27.4 - 31.3 N.m (2.8 - 3.2 kgf.m, 20.2 - 23.1 IB-ft) + 30°
[Intake oil control valve (OCV) and Center Bolt]

[Exhaust oil control valve (OCV) and Center Bolt]

  
•
To prevent impurities from entering exhaust oil control valve (OCV) & center bolt, wear rubber gloves.
•
When installing the exhaust oil control valve (OCV) and center bolt, hold the hexagonal portion (A) on the camshaft with a wrench to prevent the camshaft from rotating.
[Intake CVVT]

[Exhaust CVVT]
6.
Install the timing chain.
(Refer to Timing System - "Timing Chain")
CVVT & Cam Shaft Assembly
1.
Install the exhaust camshaft & CVVT assembly (A).
2.
Install the intake camshaft & CVVT assembly (A).
3.
Install the camshaft front bearing cap (A) and camshaft bearing caps (B).

  
•
When installing the camshaft front bearing cap and camshaft bearing caps, tighten the bolts and nuts with pre-torque first, and then tighten the bolts and nuts with specified torque in the sequence shown.
Tightening torque :
Step 1
M8 Bolts : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
M6 Bolts : 4.9 - 7.8 N.m (0.5 - 0.8 kgf.m, 3.6 - 5.8 Ib-ft)
Step 2
M8 Bolts : 18.6 - 22.6 N.m (1.9 - 2.3 kgf.m, 13.7 - 16.6 lb-ft)
M6 Bolts : 11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

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

    CVVT & Camshaft. Description and operation

    Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load...

    Cylinder Head. Repair procedures

    Removal    • 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...

    Other information:

    Hyundai Santa Fe (TM) 2019-2024 Service Manual: Automatic Transaxle. Repair procedures


    Removal    • 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...

    Hyundai Santa Fe (TM) 2019-2024 Owner's Manual: Auto defogging system (only for automatic climate control system)


    Auto defogging help reduce the possibility of fogging up the inside of the windshield by automatically sensing the moisture on inside the windshield. The auto defogging system operates when the heater or air conditioning is on. Information The auto defogging system may not operate normally, when the outside temperature is below 14°F(-10°C)...

    Categories

    Vehicle Identification Number (VIN). Vehicle certification label. Tire specification and pressure label

    Vehicle Identification Number (VIN)

    The vehicle identification number (VIN) is the number used in registering your vehicle and in all legal matters pertaining to its ownership, etc.

    The number is punched on the floor under the passenger seat. To check the number, open the cover.

    read more


     
    Copyright © 2024 www.hsafe4.com