Hyundai Santa Fe: Timing System / Timing Chain. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Engine Mechanical System / Timing System / Timing Chain. 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")
1.
Remove the cylinder head cover.
(Refer to Cylinder Head Assembly - "Cylinder Head Cover")
2.
Set No.1 cylinder to top dead center (TDC) on compression stroke.
(1)
Turn the crankshaft pulley and align its groove with the timing mark of the timing chain cover.
(2)
Check that the TDC marks of the intake and exhaust CVVT sprockets are in straight line on the cylinder head surface as shown in the illustration. If not, turn the crankshaft by one revolution (360°) more.
3.
Remove the timing chain cover.
(Refer to Timing System - "Timing Chain Cover")
4.
Remove the timing chain tensioner (A).

  
•
Be careful not to cause the piston to pop out when removing the tensioner.
5.
Remove the timing chain tensioner arm (A).

6.
Remove the timing chain guide (A).
7.
Remove the cam to cam guide (A).
8.
Remove the timing chain (A).
Inspection
Sprockets, Hydraulic Tensioner, Chain Guide, Tensioner Arm, Timing Chain
1.
Check the CVVT sprocket, crankshaft sprocket teeth for abnormal wear, cracks or damage. Replace if necessary.
2.
Check a contact surface of the chain tensioner arm and guide for abnormal wear, cracks or damage.
Replace if necessary.
3.
Check the hydraulic tensioner for its piston stroke and ratchet operation. Replace if necessary.
4.
Check the timing chain for its elongation, abnormal wear or damage. Replace if necessary.
Installation
1.
Install the timing chain (A).

  
•
When installing the timing chain, be sure that the timing mark of each sprocket is matched with the timing mark (color link) of the timing chain.
[CVVT timing mark]

[Crankshaft sprocket timing mark]
2.
Install the timing chain guide (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

3.
Install the timing chain tensioner arm (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

4.
Install the timing chain tensioner (A) and then remove the timing chain tensioner fixing pin.
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

5.
Install the cam to cam guide (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

6.
Check if the TDC mark at the front of intake and exhaust CVVT on right side 0° by turning crankshaft twice to clockwise.
[CVVT timing mark]

[Crankshaft sprocket timing mark]
7.
Install the timing chain cover.
(Refer to Timing System - "Timing Chain Cover")
8.
Install the other parts in the reverse order of removal.
  
•
Refill engine with engine oil.
•
Refill a transaxle with fluid.
•
Refill a radiator and a reservoir tank with engine coolant.
•
Clean battery posts and cable terminals and assemble.
•
Inspect for fuel leakage.
–
After assemble the fuel line, turn on the ignition switch (do not operate the starter) so that the fuel pump runs for approximately two seconds and fuelline pressurizes.
–
Repeat this operation two or three times, then check for fuel leakage at any point in the fuel line.
•
Refill radiator and reservoir tank with engine coolant.
•
Bleed air from the cooling system.

    Timing Chain Cover. Repair procedures

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    Cylinder Head Assembly

    ..

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