IoTA_Logo(2).png

Institute of Transport Administration

Educating Transport Management since 1944

News

BRAKE TESTING COURSE FOR OPERATORS

12th Nov 2025

DVSA Chief Executive Loveday Ryder steps down

12th Nov 2025

Government considers national rollout of HGV safety technology similar to London’s DVS

12th Nov 2025

Road Safety Week 2025 November 16 - 22

10th Nov 2025

Operators Urged to address fire and insurance risks with rising eHGV/PSV use

10th Nov 2025

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