Travel motor weak e35 newholland excavator

[tylertown]

My mini excavator has seemed to have lost power when I try to reverse with the machine it's only weak on the left side with both high and low speeds.

The machine runs fine going forward and has plenty of power with the right side track in reverse.

What could cause this?
Could track tension have much to do with it? My left side seems to be very much the same distance between track and center lower roller to the track when I measured.

Also my tracks are in decent shape but are a little worn. I also have a very loud metal on metal rotating noise when I travel with the machine, it favors towards the weaker left track but it's hard to pin point.

Not a big fan of dealerships so I will be making the repairs myself

Feel free to comment or ask more questions.
Thanks in advance.

(No visible hydraulic leaks and fluid level reads fine) no other problems other than my left track being weak in reverse....

 

[RickB]

You need to do extensive pressure & flow testing while isolating components to determine what is going on. Track issues can play a part. The factory service manual will be a must.

 

[tylertown]

Thanks, I'm starting my tear down today.

 

[RickB]

You tear it down without tests, I guarantee you spend money on parts without knowing what's wrong. Good luck guessing.