First, renting makes no sense as if I remove it once, he'll just replace it so I'd be repeatedly renting tractor which would be coming from quite a ways so require me to pay for a lengthy rental each time.
Second, there is no "his side" and "my side." The bump is on a single lane road with steep hill on one side, steep drop-off the other.
Third, no one is responsible for maintaining the road. A few of us have legal access but no one is responsible for maintenance, period. No one.
My sons and I own and operate a working cattle ranch in Texas' hill country.
It has been on our family since the 1880s.
Currently we're running about 8,000 head on our 10,000 acre spread, with access to open range of more than 50,000 acres.
We have access to such a road, used by 6 additional ranchers.
My great granddad foresaw a potential problem during the 1920s.
He built his own road, and we avoid using the shared access road.
We allow no one to use our road, because he built it across our (as in my) land today.
If there is anyway you can do that, it'll serve you better in the future.
Otherwise, you might wish to arrange a meeting of all the road users to see if a mutually acceptable, long-term solution can be hammered out.
I kick in about $5,000 every other year to the mutual aid association we created years ago to maintain the shared, private road.
I do that to maintain good relations with the other ranchers.
If you don't try, things won't get better.
Good luck.