Air dryer service

Bendix recommends every 3 years for typical linehaul trucks.... cheaper models should probably be done annually, or, at most, every 2 years... that's just me being paranoid, though.

 

1 am into change when water is 1st seen at wet tank BUT NOW is good before cold hits

 

It's just a dessicant filter, not expensive.

 

Yeah... the one for my truck is about $35 from Freightliner ... not too bad... about $12 per year of service...

 

smaller european cartridge must be changed every year, but, on version-2 electronic dryes were used and with electronic air processor change it when message on dashboard appeares (and compressor cycles too oftern, every minute), but you need VCADS ore PTT to reset it.

really the first step to do is to identify air driyer. Wabco, Haldex, Knorr Bremse and Bendix are used on Volvos. But really "big" cartrige is 3 year, small - 1 year

 

If it's going on 7 years old and never been done you could even go the exchange route and just replace. It's not expensive either. Then you have a year's warranty as well.

 

Well if you go exchange then everything's done. Filter,purge valve and heater element.