Tractor Parts - Clutch Troubleshooting

Clutch Troubleshooting

Help identify the common causes of clutch failure with this troubleshooting guide from Anglo Agriparts.

Cover Assembly 

Overstroked diaphragms are common causes of cover assembly malfunction. It's possible to damage the diaphragm fingers by the gearbox input shaft during installation. Clutch adjustment should always be checked and set according to manufacturers specification.

Clutch Plate 

Clutch driven plates can become distorted during installation by 'hanging' of the gearbox on the driveshaft. The risk of distortion can be minimised by the use of an alignment tool and ensuring that the gearbox is installed without hanging on the clutch units.

Release Bearing 

Although it is not possible to fully check the operation of the release bearing when it is removed, it is false economy to re-use the old bearing as this often results in premature clutch failure. Therefore we recommend that it is always replaced. Refitment of the old component can also give excessive bearing noise and abnormal diaphragm finger/release lever wear. The bearing carrier should slide freely on the bearing quill - apply a recommended high temperature grease sparingly.

Clutch Cables 

It is recommended that clutch cables are replaced when clutch components are renewed. Cables often stretch beyond adjust limits resulting in non-clearance. Ensure that the correct cable is fitted and adjusted in accordance with the manufacturers specification.


The flywheel is often ignored during clutch replacement but should always be checked before refitting new clutch components. Uneven facing wear on the flywheel side of the drive plate can indicate severe flywheel wear, usually observed as a badly grooved mating surface. Hot spots and thermal cracks indicate the clutch has been running at high temperatures. Any marking or grooves on the mating surface should be removed or if excessive the flywheel should be replaced. If the flywheel is to be machined, the original overall dimensions must be maintained. The cover assembly mounting flange must be machined down by the same amount as the contact surface of the flywheel. The opportunity should be taken to check the flywheel ring gear.


The spigot bearing can cause severe damage if worn as it may allow the gearbox to 'float'. This can result in excessive noise and misalignment leading to damage of the clutch components. A worn spigot bearing can also cause unbalance resulting in vibration. It is good practice to replace the spigot bearing/bush during clutch replacement.

Engine/Gearbox Oil Seals 

Leaking oils seals are a major cause of clutch failure, allowing contamination of the clutch components. A small amount of contamination will affect the efficient operation of the clutch. Always check for traces of oil and replace any suspect oil seals.

Engine & Gearbox Mountings 

Worn or damaged parts can cause vibration and judder, and are often mistaken for clutch malfunction. Components showing any signs of wear or damage should be replaced.

Engine & Gearbox Mountings 

Worn or damaged parts can cause vibration and judder, and are often mistaken for clutch malfunction. Components showing any signs of wear or damage should be replaced.

Sign Up Here

Licence Terms

You are free to: Share, copy & redistribute the material in original format for any purpose as long as you follow the license terms below:

  • Attribution – you must give appropriate credit and provide a link to the original article in a reasonable and visible manner
  • You may not in any way suggest that the licensor endorses you or your use.
  • No Derivatives – The material must be distributed in full, including disclaimer, you may not distribute or share modified material.
  • No additional restrictions – You may not apply legal terms that legally restrict others from doing anything the licence permits.
  • No warranties are given. The license may not give you all of the permissions necessary for you intended use. For example other rights such as publicity, privacy, or moral rights may limit how you use the material.


    Anglo Agriparts nor any such reviewers or contributors of content provides any warranty or guarantee as to the accuracy of any information on this website and cannot accept liability for any errors or omissions. The information in this article are for general information purposes only. It does not constitute legal, technical and/or commercial advice and should not be relied upon as such. Specific advice should always be sought separately. Despite the authors best efforts the information provided in this article may not be accurate, up to date or applicable to the circumstances of any particular case. Anglo Agriparts nor the author of this article make no representations or warranties of any kind regarding the completeness or accuracy of the information contained herein and accepts no liability for loss or damage whatsoever and howsoever arising from reliance on it, regardless of whether such information originates from Anglo Agriparts, or our contributors. Anglo Agriparts has no control over the content on any other website accessed through this website and accepts no liability for any loss or damage whatsoever and howsoever arising from reliance upon the content of such websites. Neither Anglo Agriparts nor any reviewer or contributor of content on the website shall be liable to any person for any loss or damage which may arise from the use of the information contained in this article or on this website. These exclusions of liability will not apply to damages arising from death or personal injury caused by the negligence of Anglo Agriparts or any of its employees or agents or of a reviewer or contributor of content.


More text, called 'top text', blahblah

* E-Mail:

First Name:

Last Name:




Post Code:


Region / State:

The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.