IoTA_Logo(2).png

Institute of Transport Administration

Educating Transport Management since 1944

News

Regulatory decisions made about the conduct of professional drivers

13th Aug 2026

HGV parking and driver welfare match funding grant scheme evaluation

12th Aug 2026

Creating a carbon management plan for a transport project

10th Aug 2026

Next-gen eCall warning issued by DfT

7th Aug 2026

Great Britain's commercial road transport and the European Union's Entry/Exit System

6th Aug 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