Hyundai Santa Fe (TM): Timing System

Hyundai Santa Fe TM 2019-2023 Service Manual / Engine Mechanical System / Timing System

Components and components location

Components

1. Front oil seal
2. Timing chain cover
3. Timing chain
4. Cam to cam bracket
5. Timing chain guide

6. Timing chain tensioner arm
7. Timing chain tensioner
8. Oil pump chain tensioner
9. Oil pump chain
10. Oil pump chain guide

Front Oil Seal. Repair procedures

Removal and Installation

•	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 crankshaft damper pulley. (Refer to Timing System - "Crankshaft Damper Pulley")

2.	Remove the front oil seal (A).

Install the crankshaft front oil seal (A) using SST (09214 - L1100, 09231-H1100).

•	Do not reuse the front oil seal.

Timing Chain Cover. 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")

•	In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, there may be injury caused by leakage of the high pressure fuel. So don’t do any repair work right after engine stops.

•	Use fender covers to avoid damaging painted surfaces.

•	To avoid damage, unplug the wiring connectors carefully while holding the connector portion.

•	Mark all wiring and hoses to avoid misconnection.

1.	Disconnect the battery negative terminal.

2.	Remove the engine cover. (Refer to Engine and Transaxle Assembly - "Engine Cover")

3.	Remove the RH front wheel. (Refer to Suspension System - "Wheel")

4.	Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")

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

6.	Remove the compressor. (Refer to Heating, Ventilation Air conditioning - "Compressor")

7.	Remove the A/C compressor bracket. (Refer to Lubrication System - "Oil Pan")

8.	Remove the oil pan. (Refer to Lubrication System - "Oil Pan")

9.	Remove the engine mounting bracket. (Refer to Engine And Transaxle Assembly - "Engine Mounting")

10.

Install the jack to the edge of ladder frame.

•	Insert the rubber block between jack and ladder frame.

•	Be careful not to damage the balance shaft and oil pump.

11.	Remove the crankshaft damper pulley. (Refer to Drive Belt System - "Crankshaft Damper Pulley")

12.

Disconnect the engine ground cable (A).

Tightening torque :

6.9 - 9.8 N.m (0.7 - 1.0 kgf.m, 5.1 - 7.2 lb-ft)

13.

Remove the intake and exhaust variable force solenoid (VFS) valves (A).

Tightening torque :

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

14.

Remove the timing chain cover (A).

•	Be careful not to damage the contact surfaces of cylinder block, cylinder head and timing chain cover.

Installation

Install the timing chain cover.

(1)	Using a gasket scraper, remove all the old packing material from the gasket surfaces.

(2)	The sealant locations on the chain cover and the counter parts (cam carrier, cylinder head, cylinder block, and ladder frame) must be free of harmful foreign materials, oil, dust and moisture. Spraying cleaner on the surface and wiping with a clean duster.

(3)

Before assembling the timing chain cover, liquid sealant should be applied on the gap between cam carrier, cylinder head and cylinder block.

Width : Ø 3.0 - 5.0 mm (0.1181 - 0.1969 in.)

Specification : MS 721-40 AA or AAO

(4)

After applying liquid sealant on the timing chain cover, assemble the cover within 5 minutes after sealant was applied. Continuous bead of sealant should be applied to prevent any path from oil leakage.

Bead width

Whole section: Ø 2.5 - 3.5 mm (0.10 - 0.14 in.)

Specification : MS 721-40 AA or AAO

(5)

Install the timing chain cover. The dowel pins on the cylinder block and holes on the timing chain cover should be used as a reference in order to assemble the timing chain cover in exact position.

Tightening torque

Bolts (A) : 39.2 - 44.1 N.m (4.0 - 4.5 kgf.m, 28.9 - 32.5 lb-ft)

Bolts (B,C) : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Bolts (D) : 18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)

•	The engine running or pressure test should not be performed within 30 minutes after the timing chain cover was assembled.

2.	Replace the front oil seal if necessary. (Refer to Timing System - “Front Oil Seal”)

3.	Install the other parts in the reverse order of removal.

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")

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")

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

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]

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)

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)

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)

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")

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.

Drive Belt System

Drive Belt. 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 ...

Cylinder Head Assembly

Components and components location Components 1. Camshaft front bearing cap 2. Camshaft bearing cap 3. OCV & Center bolt 4. Exhaust CVVT assembly 5. Exhaust camshaft 6. Intake camshaft 7. Intake CVVT ...