Clutch Inspections and Repairs

The purpose of a clutch is to transfer engine torque through to the rest of the driveline. This can be easily done in a variety of ways, but the special function of a clutch is to allow controlled amounts of ‘slip’, that is, controlled and varied torque transfer ranging from fully locked, to totally disconnected.

In a manual car, when you press your clutch pedal, the rest of the driveline is mechanically disconnected from the motor, this takes pressure off the gearbox and allows you to smoothly change gears.

Some automatic cars also use clutch packs, but these are internally built into the gearboxes and are sometimes sealed units.

Clutches are similar to tyres, brake pads and wiper blades in that they are consumable items that wear out over time. Most clutches typically last between 40,000 and 100,000 kilometres depending on driving habits and whether you use the vehicle for towing.

Symptoms of a failing clutch

Typically, you will begin to experience issues with a clutch before it finally fails. The most common signs of a failing clutch are:

• Difficulty changing between gears including grinding
• Jumping and jerking around while taking off from a standstill
• Engine revs increasing with the associated speed increase
• Strong smells from the clutch slipping
• Unusual clutch pedal behaviour such as being stuck in a certain position
• The clutch pedal falls to the floor and stays there.

A clutch inspection and diagnostic check isn’t a very complicated process, but the process of removing and replacement often requires either the engine or the gearbox to be removed from the vehicle.

Clutch Replacements and Upgrades

Typically the reason why clutches fail early is from either accidental abuse such as riding the clutch unnecessarily or from frequently towing very heavy loads.

For vehicles that are modified to make more power than standard, an upgrade to a heavy-duty clutch kit might be necessary in order to get a longer lifespan, especially if your vehicle is driven hard.

If you suspect your clutch needs attention, book in to your local Tyrepower for a driveline inspection.