Clutch repair and replacement

Every time you press and release the pedal, a friction disc is squeezed against the engine's flywheel. That small act, repeated hundreds of thousands of times, is why clutches wear out. The shop lists clutches among its services alongside automatic and standard transmissions and transfer cases.

The parts that make up a clutch

A typical manual clutch is a set. The clutch disc has friction material on both faces and rides on the gearbox input shaft. The pressure plate clamps the disc against the flywheel with a spring. A release bearing pushes on the pressure plate's fingers when you press the pedal. The pedal reaches the bearing through either a cable or a hydraulic line with a master and slave cylinder. Any of these can be the weak point, which is why the repair is more than a disc.

In most vehicles the gearbox has to come out to reach the clutch, so related parts such as the flywheel surface and the rear main seal on the engine are looked at while everything is apart.

Signs a clutch needs attention

The full run-through is on the clutch slipping, grabbing or hard to press page. Difficulty selecting gears is covered under won't go into gear.

• The engine revs but the vehicle does not speed up in step, especially in higher gears or uphill
• The pedal engages very high, very low or feels soft or spongy
• The clutch grabs suddenly or shudders when pulling away
• A smell like burning paper after a hard start
• Trouble getting into gear with the engine running

Why clutches wear faster for some drivers

Towing, hauling, steep grades, stop-and-go traffic and riding the pedal all add heat and wear. Northern Nevada has plenty of each: trailers behind pickups, climbs toward Lake Tahoe and the Sierra passes, and 4x4s that see low-range driving. A clutch that has worked hard is not a sign you did anything wrong; it is wear doing its job.

What the shop does first

The shop follows its stated approach: "We will diagnose the situation to determine the kind of service you need." For a clutch that means driving the vehicle, checking pedal feel and the hydraulic or cable system, and ruling out a gearbox or engine issue that mimics a bad clutch. Then it tells you whether the clutch needs replacing and what goes with it. For the gearbox side, see standard transmission repair.

Vehicles, cost and timing

Clutch work is done on cars, trucks, SUVs, RVs and 4x4s with a standard transmission, foreign and domestic. Cost and timing depend on the vehicle and how much is worn, so the shop tells you once it has looked. Ask about warranty coverage when you call. The cost factors guide explains what moves the number.