On Wed, 30 Sep 2015 20:18:22 -0500, Ignoramus14408
wrote:

Eric, things like pumps can be rebuilt. Ask around for a reputable
hydraulics shop. This is bread and butter for them.

i
The D41390 pump is a very common Case part - used on a lot of their
equipment, and is very widely available in both OEM and aftermarket
for prices in the $400 US range. Hardly worth taking the risk on an
unknown rebuild for $300.