Clutch repair is part of the daily schedule in any workshop. Many problems may occur with this wear part, whose causes are not always immediately clear. That is why ZF Aftermarket has put together workshop tips on clutches and clutch repair. Learn, for instance, how you can test a clutch to tell whether noises when moving off really do point to a defect, or what problems the release system can cause. You will also receive instructions on how you can replace a clutch quickly and cost-effectively, for instance.

Overview of all workshop tips on clutches and repair tips for clutch systems:

Further details on the workshop tips

Identifying defective release bearing systems

Many clutch deficiencies in commercial vehicles can be traced to the influence of faulty release systems.

Go to the workshop tip: "Identifying defective release bearing systems."
Clutch disc release system

Grabbing clutch

If the clutch grabs, the problem may not necessarily lie with the clutch itself. Worn engine mounts or poor engine adjustment can also prevent smooth clutch engagement.

Go to the workshop tip: "Grabbing clutch"
Clutch grabs contaminated

Clutch slipping

Clutch slip may have various causes. Besides the clutch pressure plate and the clutch disk, the problem is often found in the release system.

Go to the workshop tip: "Clutch slipping"
Clutch slips

Clutch doesn't disengage

If the clutch does not separate, the problem is not necessarily the clutch. Frequent causes include faults in the release system.

Go to the workshop tip: "Clutch doesn't disengage"
Clutch does not disengage

Clutch noise

Clutch noise such as whistling or clunking is not always an indication of a defective clutch.

Go to the workshop tip "Clutch noise"
Clutch noise

Clutch replacement

If you observe only a few decisive details during clutch replacement, you can mostly save a lot of time, reduce costs and avoid unhappy customers.

Go to the workshop tip: "Clutch replacement"
Clutch installation

Greasing the hub spline of clutch disks

Only an optimally greased hub spline on the clutch disk ensures faultless functioning of the clutch.

Go to the workshop tip: "Greasing the hub spline of clutch disks"
Greasing hub spline

Checking clutch disks

Workshops may receive damaged new clutch disks due to a lack of care during transportation.

Go to the workshop tip: "Checking clutch disks"
Clutch disk lateral run-out test

Checking the DMF

If defects are suspected in the dual-mass flywheel (DMF), the cause study begins.

Go to the workshop tip: "Checking the DMF"
Dual-Mass Flywheel

Defective torsional dampers for CV

In commercial vehicles, multi-stage torsional dampers minimize vibrations and noises in the PTO.

Go to the workshop tip: "Defective torsional dampers"
Torsional damper

Replacing the slave cylinder

Correct assembly is particularly important for the concentric slave cylinder to prevent damage.

Go to the workshop tip: "Replacing the slave cylinder"
Compression destroys release bearing

Bleeding the hydraulic clutch actuation system

Hydraulic clutch actuation systems need to be free from trapped air. Learn how to bleed it correctly.

Go to the workshop tip: "Bleeding hydraulic clutch actuations"
Bleeding the hydraulic clutch actuation system

Calibrating ConAct

After installation the ConAct clutch actuation system needs to be calibrated.

Go to the useful tip: "Calibrating ConAct"
Calibrating ConAct

Faster, simpler repair of defects on the clutch

Our useful tips on clutches provide step-by-step instructions. These should help you identify and rectify various defects in no time at all. All of which makes your job in the workshop easier and saves costs in the process. Moreover, the more efficiently you do the job, the more sure you can be that your customers will go away satisfied.

With the aid of photos and descriptions, ZF Aftermarket provides you with easily understandable repair tips so that you can repair clutch systems professionally in line with the manufacturer's specifications. The various instructions show you, on the one hand, where and how you can identify a potential defect. On the other, they clearly show the necessary repair steps.