KevinCase444

Hello all!

I am hoping to get some diag/repair advice. My 1974 Case 444 has weak drive. Engine just rebuilt by a real pro and no change to driveline power. How do I diagnose weak pump or bad hydraulic motor attached to rear differential?

The system is filled with fresh oil (not hydraulic fluid).

Serial number is 9710630. I understand that many different pumps have been used on the Case garden tractors over the years.

Any advice will be greatly appreciated. Thanks very much.

Kevin in Michigan.