I rebuilt my a340h. The inside was very sludged up, and I was having issues with not building pressure when in gear before the rebuild (I assumed from the sludge).
I cleaned everything and replaced all the clutchs and steels and gaskets. Rebuilt the valve body and installed it back in the truck. It shifted fine for a little bit but started to have the same issue when put into gear a few times it will stop trying to build pressure.
I removed the pan and found the filter is clogged again, so I ordered another. I'm planning on installing it this week. It seemed weird that it would build pressure at the start but not all the time. I was wondering if there is anything else it could possibly be or anything I should do along with the filter. Any help is greatly appreciated.