Schmatic for a 340 international utility thompson hydraulic pump

[jimoclark]

Greetings All, Is there a schematic for the thompson hydraulic pump on my International 340? I feel as if I am missing some internal parts and have no idea what is gone. A blue print for this would be great and I have search everywhere. The pump is a Thompson 368633r91 the one is hard to read.
Thanks for your help greatly appreciated, Jim

 

[used red MN]

Hello Jim, welcome to YT! Here is a link to the manufacturers online parts catalog for a “Gas” IH 340, diesels are fairly rare.
CNHI IH 340 gas online parts catalog
The Hydraulics section has the diagrams. Basically no hard parts are available for these pumps. If the pressure and flow has dropped off these pumps were not designed as rebuildable, but rather considered “throw away”