Sunstand 90/92 vs. K71 and up

3188 Views 4 Replies 3 Participants Last post by TUDOR, Aug 5, 2013

Lue

Discussion Starter · Aug 4, 2013

How does the Sunstrand 90/92 Hydro unit compare to the TuffTorq 71 and up? Reliable?
Tuff torq seems to still support their hydros with parts and service, is the same true for the Sunstrand hydro's?

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TUDOR

· #3 · Aug 4, 2013

Lue said:
How does the Sunstrand 90/92 Hydro unit compare to the TuffTorq 71 and up? Reliable?
Tuff torq seems to still support their hydros with parts and service, is the same true for the Sunstrand hydro's?

If you are referring to the Sundstrand Series 15 hydros used in several JD, as well as other brands of GTs, you have to go upscale from the TT K71 to find the equivalent. Mine has only given me one minor problem in 2500 hours that wasn't my own doing from tinkering with it on the bench.

Used replacements can often be found on ebay, and Sauer-Danfoss (the parent company) still supports them.

Sundstrand Series 90 hydros are used in 100+ hp farm tractors.

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TUDOR

· #5 · Aug 5, 2013 (Edited)

Check the specs. There is a difference between the Series number and the model number. If you go looking for a "90" manual for fixing your GT hydro, it won't help you very much. The tractors in your list all use a Series 15 'U'. The JD 400 uses a Series 15 Inline.

Sundstrand Series 15/70 Technical Information

Note: Series 70 = BDU Series

http://www.sauer-danfoss.com/stellen.../bln-10006.pdf

Sundstrand Series 90 Service Manual

http://www.sauer-danfoss.com/stellent/groups/publications/documents/product_literature/520l0818.pdf

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