Hi
There is nothing to suggest that one problem in isolation would suggest "future problems with the tractor". Perhaps you think that way because of the timeframe (1.2 Hours), but that may be the only problem the tractor ever has.
In my opinion, timing has little bearing, however, frequency is a different story. If there were many of these issues in a short period of time, that would cause concern.
In 1988, I purchased a new Volvo and right from the dealer, I took it to see a friend. It spewed PS fluid all over his new driveway. The steering rack was replaced at 10 miles. The new steering rack went 300,000 miles for me and I am sure that it is still going for it's present owner.
One can never tell.
Good luck
Richard