B6100HST run w/o trans cooler question.

[dem45133]

Hi all again... this is the same B6100HST I asked about in the earlier B6100 HST problems post.

But this time I have a specific question. This tractor came to me with the trans cooler removed and a simple hydra hose in its place. It is unknown how long it was operated this way. I fully expect the HST was run hot. It appears its primary duty was mowing with a 48" deck. 1200 hrs (supposedly).

Question is... what exact damage would this have likely done? Trying to figure out what probabilities to look for.

Thanks, Dave

 

[dem45133]

Thanks Vic.

Already did the generic cooler... but I was glad to hear "OK w/o it", but you know it would have run hotter.... maybe just mowing didn't hurt it then. Doesn't appear it ever had a FEL. It will eventually...

Were just having troubles figuring out why its acting the way it is without opening it up. May not have a choice. Will see what the pressure tests say. I may write you back with those results.

Dave

 

[kuboman]

Normal operating like mowing is not going to overheat the tranny but not knowing the history of the tractor is a problem.
It is correct that heat is a killer of hydro trannies but it does take some serious pulling to really get them hot. I beleive the critical temp is somewhere in the 180-200*F range. Basically if it is too hot for your hand then it is too hot for your tranny. High grade oil helps in those conditions.