Parramatta Car Brake & Clutch Repairs 4WD & Light Commercial Truck
Free Vehicle Clutch Checks
In case you are in any doubt that your clutch is actually faulty we will complete a free clutch check while you wait. Through our expert diagnosis we will be able to tell if your clutch is faulty before we start any work on your vehicle. If you think that you are having problems with your clutch just bring your vehicle along to 3D Automotive and one of our skilled technicians will check out the problem with no obligation. Contact Simon To Enquire
How The Clutch Works
The clutch connects and disconnects the engine from the gearbox (transmission) allowing smooth gearchange and control of the engine power.
A clutch plate (driven plate) is coated on both sides with a hard wearing high friction material. This is situated between the engine flywheel and a spring loaded pressure plate. The spring/pressure can be released by depressing the clutch pedal.
While driving, the whole clutch assembly can be turning at very high speeds. To allow a non rotating clutch pedal to control the rotating clutch assembly a clutch release bearing uses a fork acting on a thrust face.
Clutch - Controlling Engine Torque
The clutch has to transmit the engine power to the wheels allowing the vehicle to move. The torque of the engine is transferred by the clutch system relying entirely on the contact friction between 2 faces. A slipping clutch occurs when the friction is too low (often due to clutch wear) or engine torque is too high (during rapid acceleration)
Controlling Power Transmission via The Clutch - Clutch Slip
The torque capacity (how much power can be transmitted without slipping) depends upon:
- The Coefficient of Friction of the engaging Clutch Faces
- Diameter of the Clutch Plate
- The Pressure or Spring Loading
In order to use greater engine torque in high performance vehicles a multi-face clutch may be used compared to the single plate clutch system adopted on most cars.
How a Car Clutch Works with Normal Manual Driving
A car clutch is engaged or disengaged using the left most "clutch" pedal.
The clutch pedal is depressed to disengage the engine from the gearbox and drive train while changing gears. Once the gear is selected, the clutch pedal is released and the engine is once-again linked via the drive train
The clutch operation can be actuated by:
- A Mechanical Linkage
The clutch pedal is connected directly to the clutch assembly via a mechanical linkage such as cable or chain.
- A Hydraulic Clutch
Depressing the clutch pedal increases pressure in a hydraulic piston coupled to the clutch pedal. The increased pressure is transferred to a secondary piston that operates a lever to engage-disengage the clutch plates
- An electronic clutch - Clutch by Wire
Sensors detect the position of the clutch pedal electronically and interpret the position using an Electronic Control Unit (ECU) that computes the best way to operate the clutch based upon information relayed from other sensors indicating driving speed, engine speed and so on. The ECU relays information to a servo unit to actuate clutch operation.
Clutch Servicing, Kit Fitting & Repairs
Clutch service in parramatta area
Dual Mass Flywheel Clutch Assembly
Dual-Mass Flywheels are fitted in many light commercial vehicles covering very high mileages requiring regular clutch replacement.
- dual mass flywheels
- concentric slave cylinders
- Self-adjusting cover assembly
New clutches fitted to most makes of cars using the recommended clutch kits
Clutch Master Cylinder
Pumping the clutch pedal to disengage the clutch is a classic symptom of loss of hydraulic fluid from the hydraulic clutch system and may be indicative of a leak or ruptured seal in the clutch master cylinder or clutch slave cylinder
Clutch Slave Cylinder
The clutch fittings that link the clutch slave cylinder to the master cylinder can leak but it's also worth checking the piston seals on the clutch slave cylinder.
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