Slack adjusters

Be easier to just go to Meritors website. They usually have tech info downloadable.

For the most part, if you can tighten, but not back off, release the pawl and back off, your good.

That doesn't necessarily mean it's doing it's job though. Other factors can influence it's operation

 

Literature on Demand - Product, Technical & Training Information | Meritor


Clevis pins should not be frozen or have excessive play. Slack adjuster greased at regular intervals. S cam bushings and brakes should be in good condition. Literature on Demand is free.

 

I would recommend you look online Volvo repair manuals.
My friend managed to solve his problems, there was the necessary information.

 

The ones with the button type pawl can be bad. The adjuster strips out, or dried grease makes them not function properly. The whole adjuster can be taken out, cleaned, replaced if needed.