2014 Mahindra max 28xl slow front dump

[KLo7]

I recently purchased a 2014 Mahindra max 28xl with 150 hours. New to owning a tractor. The front in loader is really slow to dump all other functions work fine. I purchased a gauge and check the pressure. All is at specs 2100. Now here is the strange thing I disconnected the dump hydraulics and it still dumped at the slow rate with the line disconnected. All other functions as they are suppose to. I was quite surprised when the bucket started dumping with no hydraulics to that function. Looking for any advise, I have wrenched on cars for over 50 years but hydraulics are new to me.