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Originally Posted by machmeter62 When you opened the HST and said things were "within limits:" meaning to me; it was warn, but would "maybe" need rebuilding in the distant future too? |
The manual has wear limit ranges for the pistons and bores of the pump
and motor, as well as thickness of the brass slippers, and the brass end
plates. All were on the good side of their limits....maybe I should have said
"well within limits", rather than within limits. I should also state that one
needs a micrometer that measures in 10,000ths to see any meaningful
measurement variation. Also, I should note that the swash plates
themselves are a shiny hard steel alloy that I am sure is quite a bit harder
than the slippers....thickness variation form side to center was maybe
1/10,000".
I saw a post maybe 4-5 mo ago on
TBN where the owner of an
HST tractor
ran out of oil. He posted pix of the
HST swash plate and it was spalled
badly. Basicly, if your
HST never runs out of CLEAN oil, I do not know what
its failure mode would be.
Following is a photo of Kubota's new and sophisticated
HST+. This is a
different beast entirely. I would like to see what's inside that.