Hyundai Elantra CN7: Dual Clutch System - DCT(Dual Clutch Transmission) System - Hyundai Elantra CN7 2021-2025 Workshop ManualHyundai Elantra CN7: Dual Clutch System

Description and operation

Description
•
Components location : DCT (Dual Clutch Transmission)
•
Function
The dual clutch is installed within the transmission.
The dual clutch comprises an odd clutch and an even clutch. The odd clutch transfers and cuts off engine power to the transmission when shifting odd gears.
The even clutch transfers and cuts off engine power to the transmission when shifting even gears.

Dual Clutch Assembly

Components and components location
Components

1. Dual clutch assembly
2. Snap ring
3. Spline hub
4. Retaining ring

Repair procedures
Removal
1.
Remove the dual clutch transmission from the vehicle.
(Refer to Dual Clutch System - "Repair procedures")
2.
Remove the retaining (A) and then removing the spline hub (B).

3.
Remove the snap ring (A).

4.
Remove the dual clutch assembly (A) by using the special service tool [SST No.: 09430-C1180].

Installation
   
•
Check the applied state of grease on input shaft spline part (A) before installing the dual clutch assembly. If there is no grease on input shaft spline part, should apply the grease on each spline end to 10mm.
•
If excessively applied grease, grease can be scattered by centrifugal force which can contaminate the clutch disc. This can cause a loss of friction force
Specified grease : Extreme pressure grease for vehicle
Quantity : 0.15 - 0.25 g

1.
Install the SST (No.:09430-2A240) on the support bearing within the dual clutch assembly (A).

2.
Install the SST (No. : 09430-2A240) on the clutch housing side.
3.
Install the dual clutch assembly (A) using the SST (No. : 09430-2A240).

4.
Install the snap ring (A).
   
•
Do not reuse the sanp ring.

5.
Install the spline hub (B) and the install the snap ring (A).

6.
Perform the work procedures for abrasion compensation reset after installing the new dual clutch assembly.
(Refer to Clutch Actuator Assembly - "Adjustment")
7.
Perform the clutch touch point learning procedure using the diagnostic tool after replacing the dual clutch assembly.

Clutch Engagement Fork and Engagement Bearing

Components and components location
Components

1. Engagement bearing sleeve
2. Clutch engagement fork
3. Engagement bearing 1 (Odd)
4. Engagement bearing 2 (Even)
5. Dual clutch assembly
6. Snap ring
7. Spline hub
8. Retaining ring


Repair procedures
Removal
1.
Remove the dual clutch transmission from the vehicle.
(Refer to DCT System - "DCT)
2.
Remove the dual clutch assembly.
(Refer to Dual Clutch System - "Double Clutch Assembly")
3.
Remove the clutch engagement bearing 2 (A) and 1 (B).

4.
Remove the clutch engagement fork (A) and engagement bearing sleeve (B).

Installation
   
•
Apply coat of grease when installing the clutch fork.
Spec grease : CASMOLY 9508
Amount : 0.2g

1.
Install the clutch engagement fork (A) and engagement bearing sleeve (B).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

   
•
Check dowel pins (A-2ea) when installing the fork assembly. Replace the dowel pin with new part if it is damaged or deformed.
•
Take caution of the direction of fork assembly shaft when installing.

2.
Install the engagement bearing 1 (A).
   
•
Align the fork with the bearing plastic guide direction.

3.
Install the engagement bearing 2 (A).
   
•
Take caution and make sure that the bearing plastic stopper (B) is settled in the sleeve (C).

   
•
Apply coat of spec grease on the 1st input shaft spline (A) after installing the bearing.
•
Apply proper amount of transmission oil on the 2nd input shaft spline (B).
(Be careful not to get oil on the spline when applying coat of oil.)
Spec grease : CASMOLY 9508
Amount : 0.15 - 0.25g

Dual Clutch Transmission Control System
Description and operation DescriptionThe Dual Clutch Transmission (DCT) control system measures required data to identify the state of the control target and computes the appropriate compensation v ...