Volvo DPF / SCR problems

So here is something not a lot of people know about the diesel doser specially on volvo with EPA 13 should be 2013 and up, the highest failures of dosers actually comes from the control valve or control block which is located on driver side right in the middle of the engine, that being said that control block has a feed of constant air pressure to boost up injection pressure if you go down the line right by the air dryer there is a check valve that needs to be replaced as well with it, and all the failures mainly come from the one and only air dryer cartridge not being serviced at proper intervals or being replaced with something from older truck with out the coalescing abilities and it is letting a bit of oil in the air system making a bunch of problems down the line. most people just replace the actual valve not a huge deal about 350 at volvo no one sees the system as a whole and they have repeated failures within a year.

 

ROOOOOFL
just for you ...
we write the Year Anno 2003 Merzedes Main Factory Plant Wuehrt send 3 Actros MPx later called MP3 on the Road with test Registration... Trucks was the first on longrun test with AdBlue, distance Radar, Adoptive cruse control, line assisted, EMC Brake Assisted, Disk Brakes .......
I was one of the 4 Drivers who get the right to drive them.
so don't tell me i have limited or no knowlege on that.
Probably you don't know WHY the DEF tank lid is blue!

Sorry Val77 but you got 36 Postings and show up and you like to tell us now that you are now our holy saver..
lol

 

Funny thing is that at least 60% of people working on this #### have no idea what is going on with def at least 60% if not more.

 

Do you mean replace the air dryer and cartridge or just replace the cartridge every year?

 

If you live in a humid climate i would replace it 2 times a year.
Once before winter/rainy season,once after.
Specially if the compressor is getting on in years.