Hyundai Elantra (CN7): Timing System / Timing Chain Cover

Hyundai Elantra (CN7) 2021-2025 Service Manual / Engine Mechanical System / Timing System / Timing Chain Cover

Repair procedures

Removal
   
•
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 engine room under cover.
(Refer to Engine And Transaxle Assembly - "Engine Room Under Cover")
4.
Drain the engine coolant.
(Refer to Cooling System - "Coolant")
5.
Drain the engine oil.
(Refer to Lubrication System - "Engine Oil")
6.
Remove the drive belt.
(Refer to Drive Belt System - "Drive Belt")
7.
Remove the drive belt tensioner.
(Refer to Drive Belt System - "Drive Belt Tensioner")
8.
Remove the alternator.
(Refer to Engine Electrical System - "Alternator")
9.
Remove the crankshaft damper pulley.
(Refer to Drive Belt System - "Crankshaft Damper Pulley")
10.
Remove the cylinder head cover.
(Refer to Cylinder Head Assembly - "Cylinder Head Cover")
11.
Remove the water pump.
(Refer to Cooling System - "Water Pump")
12.
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)

   
•
The variable force solenoid (VFS) must be removed before removing the timing chain cover.
13.
Remove the turbo charger coolant hose and pipe mounting bolts (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

14.
Remove the oil pan.
(Refer to Lubrication System - "Oil Pan")
15.
Insert the rubber block between jack and lower crankcase.
16.
Remove the engine mounting support bracket (A).
Tightening torque :
Nut (B) : 88.3 - 107.9 N.m (9.0 - 11.0 kgf.m, 65.1 - 79.6 lb-ft)
Bolt, Nuts (C) : 58.8 - 73.6 N.m (6.0 - 7.5 kgf.m, 43.4 - 54.2 lb-ft)

17.
Remove the timing chain cover (A) and hanger (B).

Installation
1.
Install the new O-ring (A).

2.
Install the timing chain cover.
(1)
Keep the liquid gasket sealing surfaces (cam carrier, cylinder head, cylinder block, lower crankcase) free from foreign matters, cured sealant, oil, dust, moisture and etc. Spray the cleaner on the sealing surface and wipe it off with a clean cloth.
(2)
Apply liquid gasket sealant to an interface between cam carrier, cylinder head, cylinder block and lower crankcase.
Width : Ø 3.0 - 5.0 mm (0.1181 - 0.1969 in.)
Specification : MS721-40AA or above

(3)
Apply liquid sealant on timing chain cover. Then, assemble the part within 5 minutes of applying sealant.
Width
Whole section : Ø 2.5 - 3.5 mm (0.0984 - 0.1378 in)
Section A : Ø 1.5 - 2.5 mm (0.0591 - 0.0984 in)
Section B : Ø 3.5 - 4.5 mm (0.1378 - 0.1772 in)
Specification : MS721-40AA or above

(4)
The dowel pins on the cylinder block and holes on the timing chain cover should be used as a reference for assembling the timing chain cover to the exact position.
Tightening torque
Bolt (A, B, C, D) : 18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)
Bolt (E, F) : 39.2 - 44.1 N.m (4.0 - 4.5 kgf.m, 28.9 - 32.5 lb-ft)

   
•
The firing and / or blow out test should not be performed within 30 minutes of assembling the timing chain cover.
3.
Replace the front oil seal.
(Refer to Timing System - "Front Oil Seal")
4.
Install the other parts in the reverse order of removal.
5.
Refill engine with engine oil.
(Refer to Lubrication System - "Engine Oil")
6.
Fill with engine coolant.
(Refer to Cooling System - "Coolant")
   
•
The coolant must be injected according to the integrated thermal management module (ITM) coolant filling method.

    Repair procedures Replacement1.Remove the crankshaft damper pulley.(Refer to Drive Belt System - "Crankshaft Damper Pulley")2.Remove the front oil seal (A).

    Components and components location Components1. Variable force solenoid valves 2. Timing chain cover3. Cam to cam guide4. Timing chain5. Timing chain tensioner arm6.

    Other information:

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Components and components location

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    Hyundai Elantra (CN7) 2021-2025 Service Manual: Desctiprion and operation

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