No Pilot Pressure on Tigercat Loader

[Swamplogger843]

Hey guys my dad is a retired swamp logger now heavy equipment mechanic. He has ran into a problem on a 2009 Tiger Cat Loader. It has no pilot pressure. He said it will run but has no functions. He has changed out the pump to a good used one, changed filters. He has been scratching his head on what could be the issue. Any help would be greatly appreciated.

[rusticretreater]

There is a Service Manual: Tigercat T250B Track Loader 2009 at https://www.scribd.com/document/331093473/29320A

Section 5 covers the pilot valve and its electronics.

I also sent you the relevant instructions from the manual via PM.  You have to view the manual to see the pictures and diagrams.