742B Drive Issue

[Sethmp6]

Hello everyone, I'm new to the forum but have used it a ton to figure things out. I just finished engine rebuild on a 742B. Has 4400 hrs on it. Had been working great until I used it to move some very deep heavy spring snow. Heaviest load I have put on it. Now I'm having an issue with the right side drive. In forward gently pushing on the stick nothing happens, can hear pump working but no movement. If I push the stick forward all the way forward it moves, more jerks to the left. No issues moving in reverse. The left side drive works great nice and smooth. Its not a huge deal but when trying to make small moves with forks it just slams all over the place. I've already replaced all the hoses, checked the relief/replenishing valves and there are no leaks. Just wondering what to work on next, hydrostatic pump or motor.

 

[Tazza]

I'd check your linkages first, if they are loose, they will give erratic control.
If that fails, if you swap motors from side to side, you can see if it's a drive motor issue or not.