Singapore's Best Gearbox Overhaul Specialists

Whether your vehicle utilizes a high-performance PDK or DCT, a sophisticated DSG, a traditional AT, or a fuel-efficient CVT or AMT, we have the expertise to handle them all. Our technicians are trained to navigate the complex mechanical and electronic DNA of every major transmission type on the market. We do not just repair gearboxes; we restore them to their factory-standard performance using the most advanced methods available in Singapore today.

Gearbox overhaul with Longest Warranty in Singapore, and that's exactly why car owners trust us. If your gearbox is jerking, slipping, or making noise, don't roll the dice with scrapyard swaps or guesswork.

We specialise in proper gearbox overhauls, using only new high-quality parts, rebuilt by experts who've fixed over 2,000+ gearboxes across Porsche, Mercedes, BMW, Audi, Toyota, Nissan and more.

You get a 2-year or 40,000km warranty, the longest in Singapore.

We're not here for short-term fixes. We're here to make sure you don't come back for the same problem twice.

Drive down, we'll check it for you. No hard sell, no obligation. And you can spread the cost with Atome, Grab or Shopee.

A transmission overhaul kit is a comprehensive set of components designed to rebuild and restore a vehicle's transmission to optimal working condition. This kit typically includes essential parts such as gaskets, seals, O-rings, clutches, friction plates, and sometimes CVT chains, all of which are critical for ensuring smooth transmission operation. During a transmission overhaul, worn or damaged parts are replaced with new ones from the kit, allowing the transmission to function like new.

The Overhaul Process

1. Diagnosis and Assessment: Our expert technicians begin with a thorough diagnosis to identify the exact issues affecting your gearbox. Using advanced diagnostic tools, we assess wear and tear, identify damaged parts, and determine the scope of the overhaul needed.
2. Disassembly: The gearbox is carefully dismantled, allowing us to inspect each component individually. This step is crucial for identifying hidden issues that aren't apparent during initial diagnostics.
3. Cleaning and Inspection: Every part, from gears and bearings to seals and shafts, is meticulously cleaned and inspected. This ensures that only components in good condition are reused, while worn-out parts are replaced with high-quality replacements.
4. Repair and Replacement: Damaged or worn components are either repaired or replaced. We use top-grade parts to ensure longevity and performance, maintaining the integrity of your gearbox.
5. Reassembly and Testing: After all necessary repairs, the gearbox is reassembled with precision. Rigorous testing follows to ensure that it operates smoothly and efficiently, meeting the highest standards of performance.

Benefits of a Professional Gearbox Overhaul

• Enhanced Performance: Restoring the gearbox ensures smoother gear transitions and better overall vehicle performance.
• Increased Longevity: Regular overhauls extend the lifespan of your gearbox, saving you from frequent and expensive repairs.
• Cost-Effective: An overhaul is often more economical than replacing the entire gearbox, offering significant savings without compromising quality.
• Peace of Mind: Knowing that your gearbox has been professionally overhauled provides confidence in your vehicle's reliability and safety on the road.

Gearbox failures pose a significant challenge for vehicle owners and automotive technicians, especially in Singapore where the combination of a hot and humid climate and frequent stop-start traffic accelerates the wear and tear on transmission systems. Understanding the common causes of failures across different gearbox types such as Direct-Shift Gearbox (DSG), Automatic Transmission (AT), Continuously Variable Transmission (CVT), Dual-Clutch Transmission (DCT), Porsche Doppelkupplung (PDK), and Automated Manual Transmission (AMT) is crucial for preventive maintenance and extending the lifespan of these systems.

Direct-Shift Gearbox (DSG)

The DSG is prized for its efficient and quick gear shifting capabilities. However, this type of gearbox often encounters issues such as premature clutch wear, particularly when driven frequently in heavy traffic which necessitates constant shifting. The notorious mechatronic unit, which electronically controls the clutch and gear shifting mechanism, is another common failure point due to either software malfunctions or hardware breakdowns like solenoid failures. Additionally, DSG gearboxes are prone to overheating during hard driving conditions or if the transmission fluid coolers are clogged, a problem often exacerbated by Singapore's tropical climate.

Automatic Transmission (AT)

Traditional automatic transmissions, known for their ease of use, commonly face failures due to fluid degradation. In hot climates, transmission fluid can degrade faster, leading to increased friction and overheating. Issues with the torque converter, including leaks and a malfunctioning stator, can impede efficient power transfer and accelerate wear. Furthermore, solenoids that control fluid flow in automatic transmissions can fail due to electrical issues or fluid contamination.

Continuously Variable Transmission (CVT)

CVTs, which provide a seamless driving experience, typically suffer from problems like belt or chain slippage. The metal belt or chain that runs between pulleys can slip or break under high load or if the pulleys are damaged. Wear and tear on the pulleys, which adjust to varying diameters to change the gearing ratio, can also lead to a failure in maintaining proper gear ratios. Similar to automatic transmissions, the fluid in CVTs can degrade, particularly in hot climates, which affects performance and leads to overheating.

Dual-Clutch Transmission (DCT)

Dual-Clutch Transmissions combine the efficiency of manual transmissions with the convenience of automatics but are not without their faults. Clutch wear is common due to the dual-clutch system design. DCTs also depend heavily on software to control shifting, and software glitches can result in poor shifting behavior and increased wear. Additionally, failures in the hydraulic system, which controls the clutches and gear actuation, can lead to severe transmission problems.

Porsche Doppelkupplung (PDK)

The PDK, specific to Porsche models and a type of highly sophisticated DCT, faces issues mainly under high-performance stress. Stress failures may occur if the vehicle is driven aggressively. High-speed shifting can also lead to accelerated wear of gearbox components like synchronizers and bearings. Furthermore, failures in sensors and electronic modules can result in incorrect shifting commands and potential gearbox damage.

Automated Manual Transmission (AMT)

While less common, AMTs still experience their share of problems. Actuators, which are used for clutch operation and gear shifts, can fail both mechanically and electronically. Clutches in AMTs can wear out, especially with improper usage such as riding the clutch in traffic. Inaccurate software calibration can also lead to harsh shifts and increased stress on the transmission components.

Each gearbox type has its own set of vulnerabilities, especially under the demanding conditions experienced in Singapore. Regular maintenance, including timely replacement of transmission fluid and adherence to service schedules, is vital for mitigating these issues. Vehicle owners should also stay vigilant for early signs of transmission problems, such as unusual noises, hesitations in shifting, or leaking fluids, to address issues before they escalate into major failures. This comprehensive understanding is essential for preventive care and ensures the longevity and optimal performance of the vehicle's transmission system.

If you are driving a Volkswagen or Audi with a dual-clutch gearbox (DSG), you typically do not need a full gearbox overhaul when issues arise. The most common problems are usually related to either the clutch or the mechatronic unit. Since the clutch is a mechanical component, the symptoms are usually more consistent, such as a noticeable loss of power or the inability to engage either the odd or even-numbered gears, which is a characteristic of dual-clutch systems. On the other hand, if the mechatronic unit is faulty, the gear shifts tend to be erratic, and you may notice error messages on the dashboard. In some cases, the issue may temporarily resolve after restarting the engine. At 1 Car Service Workshop, we are experienced in diagnosing and repairing these common DSG gearbox issues, ensuring your Volkswagen or Audi operates smoothly and reliably.

When embarking on a gearbox overhaul in Singapore, understanding the comprehensive parts list is crucial for ensuring a successful and efficient rebuild. A thorough overhaul addresses all consumable components within the gearbox, supporting optimal performance and longevity of your vehicle's transmission system.

Included Consumable Parts

A complete gearbox overhaul encompasses the replacement of several key internal components that are subject to wear and tear over time. The primary consumable parts involved include:

• Clutch Assembly: Essential for engaging and disengaging the gearbox from the engine, ensuring smooth gear transitions.
• CVT Chains: Critical in Continuously Variable Transmissions (CVT), these chains facilitate seamless gear ratios and consistent power delivery.
• Seals and Gaskets: These components prevent leaks and maintain the integrity of the gearbox by ensuring airtight and watertight connections.
• Transmission Filter: Filters out contaminants from the transmission oil, protecting internal components from debris and prolonging their lifespan.
• Transmission Oil: Vital for lubricating moving parts, reducing friction, and dissipating heat generated during operation.

Replacing these parts during an overhaul not only restores the gearbox to its original performance standards but also mitigates the risk of future mechanical failures.

Excluded Components

While a gearbox overhaul is comprehensive, it specifically excludes certain parts that reside outside the gearbox casing or those that remain unaffected by typical transmission issues. These excluded components include:

• Engine: The powerhouse of your vehicle, unrelated to the gearbox's internal mechanics.
• Flywheel: Connects the engine to the transmission but does not require replacement unless damaged.
• Control Modules: Electronic units that manage gearbox functions, only replaced if malfunctioning.
• Torque Converter: Found in automatic transmissions, it is excluded unless faulty.
• Valve Body: Regulates hydraulic fluid flow within the transmission, excluded unless there's a specific issue.
• Oil Pan: Holds transmission fluid but remains untouched unless there's evidence of leakage or damage.
• Auto Cooler: Manages transmission temperature, excluded unless it's not performing optimally.

Excluding these components ensures that the overhaul remains cost-effective and focused on parts that genuinely require attention. Unless these external parts show signs of wear or damage, there's no need to replace them, thereby streamlining the overhaul process and reducing unnecessary expenses.

Why Focus on Consumable Parts?

Focusing on the consumable parts within the gearbox ensures that the most critical elements are addressed, providing a solid foundation for the transmission's performance. By replacing worn-out parts like seals, gaskets, and the transmission filter, you prevent common issues such as leaks, contamination, and inefficient lubrication. This targeted approach not only enhances the gearbox's reliability but also extends its operational lifespan, offering peace of mind for car enthusiasts and everyday drivers alike.