I have the 2008 American Tradition 42F. I have done a bunch of work on mine. I don't know if you have the same pump/valve I do. But the one I have is pretty easy to work on.
I haven't tried this yet but I believe this is the motor mine uses: https://www.amazon.com/dp/B009OOOE32...v_ov_lig_dp_it
There is a solenoid that powers the motor and then it uses Hydac Valves in the Valve Body.
I've already replaced my Dump Valve and one of the Leg Valves. I have 2 or 3 brand new Dump Valves sitting at home I picked up because they were a really low price in a pack.
If you need one I have extra. Just PM me.
You can identify the Valve by the stamping on the part of the stem that is the hex where you use a wrench to remove it.
The Hydac coils I believe are the 40mm ones (12VDC) with custom connectors. You can splice these or try to find the replacement connectors. This will save you a ton of $$. If you buy the ones using the part numbers from Power Gear or Valid they charge handsomely for them.
Here is a Quick Reference Guide for PowerGear/Valid Part numbers that was helpful: https://gravert.me/TEMP/POWER-GEAR-Q...IDE-5-4-05.pdf
Here are some pictures of mine: