IoTA_Logo(2).png

Institute of Transport Administration

Educating Transport Management since 1944

News

Driver Wellbeing - A Traffic Commissioners’ View

5th Nov 2026

HGV people smuggling network dismantled by NCA as final members convicted

5th Nov 2026

Commercial fleets given stronger voice to help shape road pricing

4th Nov 2026

Women's Association of Trucking Announces Launch

3rd Nov 2026

Police promise crackdown on HGV thieves hunting ‘rich pickings’

2nd Nov 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