While we are on the subject. Does anyone know makes that dual hydro pump? It is the first time I have one in use. Most ZTRs I have work on that uses wheel motors have separate independent pumps.
Okay guys this appear to be a Tuff Torq DUP10E unit. It may have a broken internal gear between the L and R cylinder blocks. It appears that Tuff Torq don't provide parts directly for these units and even JD don't offer the gears.
Here is a place that has complete units at a reasonable but please verify that you have the DUP10E pump before ordering.