Freightliner FL70 Service manual

First post, but I have been taking advantage of the great information from this forum for a while now, so thanks for that!

I have an old FL70 with a Cummins 8.3L ISC.
I am mainly looking for the fuel system diagram, I did call the local Freightliner dealer and they acted like it would be easier / way cheaper to find the service manual online.

All I can find online is a huge amount of website that appear to be Chinese scam sites.
Does anyone have a good source for service manuals or can hook me up with a copy of the fuel system diagram?
Thanks!

 

Thanks, I am in Quickserve, but I did not know that they provide that much information for free!
I really wanted to see the routing of the fuel lines between tank/engine/filters. I’m sure I can figure it out by just getting under the rig and scout it out.