Clutches
A clutch works like a control switch between your engine and your wheels.
Inside your vehicle, there are two key components working together. One is connected to the engine and is always spinning when the car is running. The other is connected to the gearbox and wheels. When these two parts press together, power flows from the engine to the wheels, allowing your car to move. When they separate, the engine continues running, but no power is sent to the wheels.
An easy way to understand this is to imagine rubbing your hands together. When your hands press against each other, they move as one- just like power transferring through the clutch. When you pull them apart, they move independently- just like when the clutch is disengaged.
The clutch plays an essential role in how your vehicle operates. It allows you to change gears smoothly, come to a stop without switching off the engine, and move off without jerking or stalling.
In simple terms, a clutch connects and disconnects the engine from the gearbox, giving you full control over how power is delivered to your wheels.
FAQ’s
What does a clutch actually do?
A clutch connects and disconnects the engine from the gearbox, allowing power to be transferred to the wheels when needed.
Why is a clutch important in my car?
The clutch allows you to change gears smoothly, stop your car without switching off the engine and start moving without jerking.
What happens when I press the clutch pedal?
When you press the clutch, it separates the engine from the gearbox, meaning the engine can keep running while the wheels stop receiving power.
Why does my car need a clutch to move?
Without a clutch, you wouldn’t be able to control how power is delivered to the wheels, making it impossible to change gears or drive smoothly.
Clutch Types Explained
At Pinetown Diff & Gearbox (PDG), we specialise in clutch diagnostics, repairs, replacements, and gearbox-related services for a wide range of vehicles. Understanding the different types of clutches can help you identify problems early and better understand how your vehicle transfers power to the wheels.
A clutch connects and disconnects the engine from the gearbox, allowing smooth gear changes and controlled power delivery while driving.
What Is a Dry Clutch?
A dry clutch is the most common clutch type found in manual vehicles. The friction plate operates without oil between the flywheel and pressure plate.
How It Works
When the clutch pedal is pressed, the clutch disengages and temporarily disconnects the engine from the gearbox. Releasing the pedal allows the friction plate to grip the flywheel, transferring power to the wheels.
Benefits of a Dry Clutch
- Simple and cost-effective design
- Easy to repair and maintain
- Efficient power transfer with minimal drag
Common Problems
- Faster wear under heavy use
- Can overheat in stop-start traffic
- Clutch slipping over time
Common Vehicles Using Dry Clutches
- Toyota Hilux
- Volkswagen Polo
- Ford Ranger
- Hyundai i20
Most manual cars and bakkies on South African roads use dry clutch systems.
What Is a Wet Clutch?
A wet clutch operates inside transmission oil or ATF fluid, which helps cool and lubricate the clutch plates.
How It Works
Multiple clutch plates run in oil, allowing smoother engagement and better heat management.
Benefits of a Wet Clutch
- Better cooling under heavy load
- Smoother gear engagement
- Longer lifespan in demanding conditions
Common Problems
- More complex system
- Slight power loss due to oil resistance
- Higher repair costs
Common Vehicles Using Wet Clutches
- Volkswagen Golf GTI (DSG)
- Audi A4 S-Tronic
- Nissan GT-R
Wet clutch systems are commonly found in automatic and dual-clutch transmissions.
What Is a Push-Type Clutch?
A push-type clutch uses a release bearing that pushes against the pressure plate fingers to disengage the clutch.
Benefits
- Simple and reliable design
- Easier servicing and replacement
- Most commonly used clutch actuation system
Common Vehicles
- Toyota Corolla
- Nissan NP200
- Chevrolet Utility
Push-type clutches are widely used in everyday passenger vehicles.
What Is a Pull-Type Clutch?
A pull-type clutch works differently by pulling the pressure plate away instead of pushing it.
Benefits
- Stronger clamping force
- Better suited for high-performance applications
- Improved torque handling
Common Problems
- More difficult to remove and install
- Incorrect installation can cause damage
Common Vehicles
- Subaru Impreza
- Mitsubishi Lancer Evolution
- Toyota Supra
Pull-type clutches are commonly found in Japanese performance vehicles.
What Is a Dual-Clutch Transmission?
A dual-clutch transmission uses two separate clutches:
- One clutch handles odd-numbered gears
- The other handles even-numbered gears
This allows lightning-fast gear changes without interrupting power delivery.
Benefits
- Extremely fast gear shifts
- Improved performance
- Better fuel economy
Common Problems
- Expensive repair costs
- Mechatronic failures
- Clutch wear in stop-start traffic
Common Vehicles
- Volkswagen Golf DSG
- Ford Fiesta PowerShift
- BMW DCT models
At PDG, we diagnose and repair common DSG and DCT transmission issues.
What Is a Multi-Plate Clutch?
A multi-plate clutch uses several friction plates instead of one, increasing torque capacity and durability.
Common Uses
- Performance vehicles
- Racing applications
- Heavy-duty towing vehicles
Common Vehicles
- Nissan Patrol heavy-duty applications
- Modified performance vehicles
Multi-plate clutches are ideal for vehicles producing high torque.
Common Clutch Problems
Clutch Slipping
Usually caused by:
- Worn friction plate
- Oil contamination
- Pressure plate wear
Signs include:
- Engine revving without acceleration
- Burning smell
- Loss of power
Hard Clutch Pedal
Often linked to:
- Pressure plate issues
- Hydraulic problems
- Clutch cable faults
Clutch Not Disengaging Properly
Possible causes:
- Faulty release bearing
- Master or slave cylinder failure
- Hydraulic leaks
Noise When Pressing the Clutch
This commonly indicates:
- Worn release bearing
- Pressure plate issues
Book Your Free Diagnostics Today!
At Pinetown Diff & Gearbox, we specialise in:
Clutch diagnostics
Clutch repairs
Clutch replacements
Gearbox repairs
Differential repairs
Transmission servicing
We are RMI approved and affiliated with major extended warranty companies, giving our customers added confidence and peace of mind.If your vehicle is struggling to change gears, slipping, vibrating, or making unusual noises, contact PDG today for professional diagnostics and repairs.