I have a Toro 255 Z mower. During use, the right side wheel lost power. Obvious oil leaking from pump. Disassembled pump and it was destroyed inside. Installed new pump; changing fluid and priming pump as required. 20w-50 oil used. New pump did good for a couple of yards and then started chattering and eventually lost power. Took pump apart. inspected. no obvious damage noted. Reinstalled. Now feels like no resistance or oil moving through pump. Checked all the obvious, (air in line, by pass valve). Could it be the wheel motor now? What does one of those act like? The new pump cost $500 and the company will not warranty it because a certified hydro tech from their company did not install it. Please help.
Hydraulic Problem
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