D series sundstrand hydro pump NOS

[1maidenfan 202]

Found this surfing around on ...

" 106459 Toro Wheel Horse Hydrostatic Sundstrand 90-1173 Transmission Assembly Piston to Piston Complete. Brand new in Box in Perfect Condition. "

Item number: 170757789526

At $899 it's not cheap but the add says it is NEW. :dunno:

[Trouty56 567]

Interesting....... expensive too!!!

[AMC RULES 37,134]

WOW!...and going south on 69, that's driving distance for you too. :popcorn:

[1maidenfan 202]

I dont really need one, all my D tractors drive great. Just wanted to let every one here know about it since there are people that might need this and from what a couple of you have found out, it is very costly to have one repaired

[JamesBe1 82]

I dont really need one, all my D tractors drive great. Just wanted to let every one here know about it since there are people that might need this and from what a couple of you have found out, it is very costly to have one repaired

Yeah, it sounds cheaper than having one repaired. But I wonder what kinda of condition it is in after sitting around for 20 or 30 years in a box. Still, it is intriguing.

[JamesBe1 82]

I did a search on ebay for Sunstrand. I came across lots of pistons and cylinder blocks for several different series pumps.

Can any tell he what series pump is used on the D-Series? Would the series possible be "90" as per the part number prefix?

[wheeledhorseman 574]

I've been thinking about that James and it's an assumption I have tended to make but I don't think it can be the case as Series 90 stuff from Sauer-Danfoss (formerly Sundstrand) appears to be pretty much current and all the spares would still be available for our pumps and motors if that were the case. It's possible / probable then that the 90- prefix was a WH generated code. I'm sure Paul will know the answer.

What I did read somewhere was that WH beat IH and JD to introducing garden tractors with hydros by a few months but whereas IH and JD opted for Sunstrand hydrostatic systems WH used the hydrogear system, subsequently switching to the more reliable hydrostatic. The system IH and JD were using was the 15 Series. This led me to a Series 15 manual which, although the hardware looked different to our WHs, the manual has many of the same diagrams used in the WH / Sundstrand manuals. The manual also contains a way better description / explanation of how our systems work than I've come across in the WH manuals.

Hydro experts please feel free to shoot me out of the water on this one by my guess is that our hydrostatic systems are 15 Series derivatives or there abouts and certainly 'obsolete' as far as the manufacturer is concerned.

Andy

[can whlvr 993]

some parts were available when i tore my sundstrand open,i needed the slipper ring for one,it was avaiable,but there were a few parts the shop had made at a machine shop,i paid cash so didnt get a bill to know what parts he had made,but it surprised me that some parts were avaiable

[1maidenfan 202]

WOW!...and going south on 69, that's driving distance for you too.

Your geography is right on :handgestures-thumbup:

[1maidenfan 202]

I've been thinking about that James and it's an assumption I have tended to make but I don't think it can be the case as Series 90 stuff from Sauer-Danfoss (formerly Sundstrand) appears to be pretty much current and all the spares would still be available for our pumps and motors if that were the case. It's possible / probable then that the 90- prefix was a WH generated code. I'm sure Paul will know the answer.

What I did read somewhere was that WH beat IH and JD to introducing garden tractors with hydros by a few months but whereas IH and JD opted for Sunstrand hydrostatic systems WH used the hydrogear system, subsequently switching to the more reliable hydrostatic. The system IH and JD were using was the 15 Series. This led me to a Series 15 manual which, although the hardware looked different to our WHs, the manual has many of the same diagrams used in the WH / Sundstrand manuals. The manual also contains a way better description / explanation of how our systems work than I've come across in the WH manuals.

Hydro experts please feel free to shoot me out of the water on this one by my guess is that our hydrostatic systems are 15 Series derivatives or there abouts and certainly 'obsolete' as far as the manufacturer is concerned.

Andy

Thanks for the instructions on becoming a "Dysfunctional 'D' family member" Hope no one disapproves. :happy-jumpeveryone: