Kia Sorento: Timing Chain Cover Repair procedures - Timing System - Engine Mechanical SystemKia Sorento: Timing Chain Cover Repair procedures

Kia Sorento (MQ4, 2021-2026) Service Manual / Engine Mechanical System / Timing System / Timing Chain Cover Repair procedures

Removal
This working procedure does not require engine removal.
Caution
In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, andinjector, there may be injury caused by leakage of the high pressure fuel. So don’t do any repairwork right after engine stops.
Note
•
Use fender covers to avoid damaging painted surfaces.
•
To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
•
Remove the variable force solenoid valve (VFS) and E-CVVT cover first when removing the timing chain cover.
Information
Mark all wiring and hoses to avoid misconnection.
1.
Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
2.
Disconnect the battery negative ( - ) terminal.
3.
Remove the engine cover.
(Refer to Engine and Transaxle Assembly - "Engine Cover")
4.
Remove the engine room under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
5.
Drain the engine oil.
(Refer to Lubrication System - "Engine Oil")
6.
Remove the drive belt and water pump belt.
(Refer to Drive Belt System - "Drive Belt")
7.
Remove the crankshaft damper pulley.
(Refer to Drive Belt System - "Crankshaft Damper Pulley")
8.
Remove the drive belt tensioner.
(Refer to Drive Belt System - "Drive Belt Tensioner")
9.
Remove the cylinder head cover.
(Refer to Cylinder Head Assembly - "Cylinder Head Cover")
10.
Remove the oil level gauge.
(Refer to Lubrication system - "Oil level gauge & pipe")
11.
Remove the A/C compressor mounting bolts.
(Refer to Heating, Ventilation and Air Conditioning System - "Compressor")
12.
Remove the A/C compressor mounting bracket (A).

Tightening torque :
19.6 - 23.5 N·m (2.0 - 2.4 kgf·m , 14.4 - 17.3 lb·ft)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Removal illustration

13.
Remove the oil pan.
(Refer to Lubrication System - "Oil Pan")
14.
Install the jack to the edge of ladder frame.
Note
•
Put the rubber block between the jack and lower crankcase to avoid damaging the lower crankcase.
•
Be careful not to damage the balance shaft and oil pump.
15.
Remove the engine mounting support bracket and the engine mounting bracket.
(Refer to Engine and Transaxle Assembly System - "Engine Mounting")
16.
Disconnect the engine ground cable (A).

Tightening torque :
10.7 - 13.7 N·m (1.1 - 1.4 kgf·m , 7.9 - 10.1 lb·ft)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Removal illustration

17.
Remove the engine support bracket (A).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Removal illustration

18.
Remove the E-CVVT cover (A).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Removal illustration

Note
Be careful not to apply external force to the brush after removing the cover.
19.
Remove the variable force solenoid valve (VFS) (A).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Removal illustration

Note
When removing the timing chain cover, be sure to remove the variable force solenoid valve (VFS) first.
20.
Remove the timing chain cover (A).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Removal illustration

Note
When removing the timing chain cover, be careful not to damage the contact surfaces of cylinder block, cylinder head and lower crankcase.
Inspection
1.
Check if the oil flows inside the E-CVVT cover.
If the oil flows inside the E-CVVT cover, replace the E-CVVT cover
2.
Check the connector brush wear condition.
If the brush is worn down, replace the E-CVVT cover.
Installation
1.
Install the timing chain cover.
(1)
Make sure to remove the hardening sealant, foreign materials, oil, dust and moisturegathered in the liquid gasket sealing surface (cam carrier, cylinder head, cylinder block, lower crankcase). Then, spray the cleaner on the sealing surface and wipe off with a clean towel.
(2)
Apply a sealant for liquid gasket to the interface between the cam carrier, cylinder head,cylinder block and lower crankcase.

Bead width : 3.0 - 5.0 mm (0.11 - 0.19 in.)
Sealant : THREEBOND 1217H / LOCTITE 5900H or equivalent

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(3)
The part must be assembled within 5 minutes after sealant was applied on the mounting surface of liquid gasket of timing chain cover.

Bead width : 3.0 - 5.0 mm (0.11 - 0.19 in.)
Sealant : THREEBOND 1217H / LOCTITE 5900H or equivalent

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(4)
The dowel pins on the cylinder block and holes on the timing chain cover should be used asa reference in order to assemble the timing chain cover (A) to be in exact position.

Tightening torque :
Bolt B : 9.8 - 11.7 N·m (1.0 - 1.2 kgf·m , 7.2 - 8.6 lb·ft)
Bolt C : 18.6 - 22.5 N·m (1.9 - 2.3 kgf·m , 13.7 - 16.6 lb·ft)
Bolt D : 9.8 - 11.7 N·m (1.0 - 1.2 kgf·m , 7.2 - 8.6 lb·ft)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
•
The engine starting or pressure tests should not be performed within 30 minutes after the timing chain cover was assembled.
•
Always install the timing chain cover mounting bolt (D) with a new one.
2.
Replace the front oil seal if neccesary.
(Refer to Timing System - "Front oil Seal")
3.
Remove it by breaking the center of E-CVVT motor plug (A).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
•
Remove after 30 minutes of switching "OFF" the ignition to drain out the oil inside the E-CVVT motor plug.
•
Do not tilt the front of engine (timing chain cover side) downward as residual oil may flow outduring E-CVVT motor plug removal.
•
If oil flows out during E-CVVT motor plug removal, wipe off immediately and block the motorshaft inlet with a clean towel.
4.
Clean the E-CVVT motor plug mounting surface (A) with oil cleaner.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
•
If the surface is not cleaned, E-CVVT motor plug may be separated due to diminished separation force from residual oil.
•
When spraying oil cleaner, block around the motor shaft inlet and rotor gap with a clean towel to prevent inflow of oil from flowing into the rotor gap.
5.
When reusing the E-CVVT cover, inspect the below items.
(1)
If there is sign of leakage from inside the E-CVVT cover, replace it with a new one.
(2)
Check the connector brush wear condition.

Specification : More than 5 mm (0.1969 in.)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

If measurement is below specification, replace the E-CVVT cover with a new one.
(3)
Check for damaged oil seal (A) and replace any damaged E-CVVT cover with a new one.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(4)
After inspecting E-CVVT, if no problem is found, replace the o-ring (A) with a new one.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

6.
Install the E-CVVT cover.
(1)
Apply engine oil to the oil seal lip (A).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
When applying oil, keep the connector brush (A) clean from foreign materials.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(2)
Insert the SST(09243 - C2000) into the E-CVVT motor shaft.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
Correctly mount SST on to the motor shaft.
(3)
Slowly push the E-CVVT cover (A) until it is flushed with the timing chain cover surface.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
Installing the E-CVVT cover without SST may cause oil leakage inside the E-CVVT motor due to damaged or separated E-CVVT oil seal.
(4)
Pre-tighten the bolts in the below sequence, and then remove the SST (09243 - C2000).

Tightening torque :
0.9 - 1.9 N·m (0.1 - 0.2 kgf·m , 0.7 - 1.4 lb·ft, 8.7 - 17.4 lb·in)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(5)
Tighten the bolts to the specified torque in the sequence below.

Tightening torque :
9.8 - 11.7 N·m (1.0 - 1.2 kgf·m , 7.2 - 8.6 lb·ft)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

7.
Install the E-CVVT plug.
(1)
Insert the plug into the E-CVVT cover hole using SST (09243 - C2000).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(2)
Mount the stopper of SST (09243 - C2000) so that it sits at the end of E-CVVT motor shaft.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

8.
Inspect the pressed depth of E-CVVT plug.
(1)
By using a steel ruler, measure the distance from E-CVVT cover center boss to the end of motor shaft (Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration).
(2)
By using a steel ruler, measure the distance from E-CVVT cover center boss to the end of E-CVVT plug (Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration).

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

(3)
Calculate the pressed depth (Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration) of motor plug.
If out of specification, reinstall after replacing the E-CVVT plug with a new one.

Pressed depth : Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration = Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration - Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration
Specification : 1.1 - 2.1 mm (0.0433 - 0.0826 in.)

9.
Insert the E-CVVT cover plug so that the protrusion reach to E-CVVT cover groove correctly.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
•
Check how much protrude after installing the E-CVVT plug.

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

•
Be careful that the plug is not inserted inside E-CVVT cover beyond the regulated range.
10.
Install the variable force solenoid valve(VFS) (A).

Tightening torque :
9.8 - 11.7 N·m (1.0 - 1.2 kgf·m , 7.2 - 8.6 lb·ft)

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Note
•
Do not reuse the variable force solenoid valve (VFS) if it is dropped.
•
When installing the variable force Solenoid valve (VFS), pay attention to the following points.
1)
After replacing the variable force Solenoid valve (VSF) O-ring (A) with a new one, apply engine oil to the new O-ring (A).
2)
Push the variable force solenoid valve (VFS) to the end of the timing chain cover mountingsurface, and then pre-tighten the bolts.
3)
Tighten the variable force solenoid valve (VFS) with specified torque.
11.
Install the engine support bracket (A).

Tightening torque :
96.1 - 114.7 N·m (4.0 - 4.5 kgf·m , 70.8 - 84.6 lb·ft)

(1)
Pre-tighten the bolts in the order of 1→2→3
(2)
Turn the bracket counterclockwise and install the bolt 1.
(3)
Install in order of 2 → 3 → 4 → 5 →6 .

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

Engine Mechanical System — Timing System / Timing Chain Cover / Repair procedures / Installation illustration

12.
Install in the reverse order of removal.
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