Exeed Affter Gearbox Overhaul 55892265
I faced an embarrassing issue with the Dual Clutch Transmission (DCT) in my Exeed (Affter) car, which started with strong and annoying jerks during shifting, especially at low speeds and in traffic.
Later, it progressed to include a slight grinding sound and a noticeable delay in accelerator pedal response, which raised concerns related to driving safety.
After an extended search for a specialized center for Chery vehicles and related models like Exeed, I found Sharara Auto Garage in Kuwait, known for its competence in dealing with Chinese systems.
The team conducted a comprehensive diagnostic check and discovered that the problem was a result of wear in the Dual Clutch Pack and failure of some Mechatronic Unit solenoids to maintain the necessary oil pressure. The solution was clear: a complete gearbox overhaul.
Professional Steps for the Affter Gearbox Overhaul:
The Affter Gearbox Overhaul process was executed with extreme precision and according to the highest standards. It included:
Careful Gearbox Disassembly and Inspection: The transmission was carefully dismantled, and the damaged components were shown to me, clearly revealing the worn clutch discs and metal shavings resulting from friction.
Complete Dual Clutch Pack Replacement: The entire dual clutch pack was replaced, along along with the seals, to ensure correct pressure and isolation.
Mechatronic Unit Cleaning and Repair: The Mechatronic Unit was meticulously cleaned and inspected, and the solenoids causing the weak hydraulic pressure were replaced without needing to replace the entire unit.
Refilling with Specialized Fluid: The gearbox was filled with specific DCT Fluid to ensure optimal Mechatronic performance.
Calibration and Reset:
The final stage was the calibration of the Gearbox Control Unit (TCU) to adjust the system to the new clutch characteristics and electronically set the engaging pressures. The result?
Smooth and quiet performance without jerks or vibrations, and instantaneous car response. I also received a full warranty for the process and the spare parts.
I strongly recommend owners of Exeed and other advanced Chinese cars who face similar problems to head to Sharara Auto Garage in Kuwait for high-level service.
For booking and inquiries about the garage services: Contact number for the Affter Gearbox Overhaul: 55892265
Definition of Affter Gearbox Overhaul
Affter Gearbox Overhaul refers to a comprehensive process of repairing and rehabilitating the automatic transmission (whether DCT or AT type), aiming to restore its original efficiency and performance after its components have suffered significant damage.
This process is necessary when mechanical or hydraulic parts are significantly affected by wear, high temperatures, or maintenance neglect, leading to symptoms like gear slippage, driving vibrations, or shifting into limp mode.
The main components addressed in the Affter Gearbox Overhaul include:
Clutch Pack/Clutches: The friction discs are replaced, as they are considered the most failure-prone parts, especially in DCT systems, playing a fundamental role in transmitting power.
Hydraulic Control Unit (Mechatronic): This unit, responsible for distributing the necessary oil pressure for engagement, undergoes cleaning or repair, as any malfunction causes irregular shifting.
Seals and Inhibitors: All rubber rings and seals are completely replaced to prevent oil pressure leakage, which is essential for proper gearbox operation.
The fundamental stages in the Affter Gearbox Overhaul process follow deliberate steps, including:
Fault Diagnosis and Gearbox Removal: The problem is accurately identified using modern technology, then the transmission is fully disassembled.
Comprehensive Internal Cleaning: Removal of any impurities or metallic debris and cleaning of oil passages to ensure operational efficiency.
Replacement of Damaged Parts: Installation of new parts like clutches and seals, and repair or replacement of faulty solenoids in the hydraulic control unit.
Reassembly and Oil Filling: The gearbox is accurately reassembled and filled with the appropriate transmission fluid (either DCT Fluid or ATF).
Electronic Calibration: The Gearbox Control Unit (TCU) is programmed to adjust the shifting points and engagement pressures to match the new components, a crucial step for achieving the required performance.
In summary, the Affter Gearbox Overhaul is a meticulously crafted rehabilitation process that restores vitality to the transmission by repairing and replacing its damaged components, aiming to ensure smooth driving and optimal response.
Reasons for Affter Gearbox Overhaul
The issues that necessitate an Affter Gearbox Overhaul center around three main reasons, all indicating significant internal damage:
1. Mechanical Reasons (Clutch Unit Wear):
These problems relate to damage to essential parts inside the gearbox and require the replacement of components subjected to friction.
Dual Clutch Pack Wear:
Caused by frequent driving in traffic congestion or aggressive use of the car, which accelerates the wear process.
Symptoms include gear slippage during shifting, irregular vibration, or slow vehicle response when starting to move.
Bearing or Internal Component Damage:
Results from internal friction or lack of lubrication, showing noticeable rattling or a “whining” sound during engagement or driving.
2. Hydraulic Reasons (Oil Pressure Issues):
These are linked to the failure of the Mechatronic system responsible for operating the clutch using oil pressure:
Mechatronic Unit Malfunction:
Often caused by the accumulation of impurities inside the unit, obstructing oil flow or the precise operation of the solenoids. Symptoms may include the gearbox entering limp mode, difficulty engaging specific gears, or violent reactions due to oil pressure fluctuations.
Internal Oil Pressure Leakage:
Occurs due to damaged rubber seals, leading to a loss of sufficient pressure to activate the clutch system. This manifests as slow gearbox response or inability to engage fully.
3. Electronic Programming and Calibration:
After repairing the gearbox or installing new parts like the clutch, it becomes essential to re-calibrate the Electronic Control Unit (TCU) to ensure compatibility with the replaced components.
The advantage of Sharara Auto lies in the availability of specialized programming tools to perform the calibration accurately, which guarantees the restoration of smooth gearbox performance.
Ultimately, Affter Gearbox Overhaul issues requiring an overhaul are related to dual clutch pack wear or Mechatronic system malfunctions. As these require comprehensive internal replacement, performing the repair through specialized centers like Sharara Auto ensures reliable and long-lasting performance 55892265.
