IoTA_Logo(2).png

Institute of Transport Administration

Educating Transport Management since 1944

News

Driver sounding horn at Police may lose licence

1st Jun 2026

New mass transit taskforce to reshape the future of transport in towns and cities

28th May 2026

Autonomous rigid prototype truck

27th May 2026

Pressured to use two tachograph cards by operator

27th May 2026

Operators warned AI is moving fast

27th May 2026

View all news »

How to maintain automatic slack adjusters

23 Sep 2021

All HGVs, PSVs and trailers over 3.5 tonnes must be fitted with fully functioning automatic slack adjusters.

Any fitting, maintenance, or assessment should be carried out only by suitably trained and competent technicians. If in any doubt you should refer to the component manufacturer for more information. It’s particularly important to follow manufacturer’s instructions during the installation process.

This guide tells you how to maintain automatic slack adjusters and how to assess their condition.

Further information:

https://www.gov.uk/government/publications/automatic-slack-adjusters-maintenance-guide/how-to-maintain-automatic-slack-adjusters