Case 1840 skid steer drive

The speed of the left drive on my 2000 Case 1840 skid steer drive suddenly dropped off while in use. I now have about half speed on the left drive while in the forward direction, but still have equal and full speed when in reverse. The chain drives and the drive gear look fine an no spline damage. I put a load on each drive mechanism by pushing on a tree and I wasn't able to tell any difference in torque from one side to the other. Meaning the left side still had plenty of torque to...

Case 1840 skid steer drive

Case 1840 skid steer drive