D series sundstrand pump model number?

[coldone 35]

Has anybody got the number off the sundstrand tag on the pump?

I have a great hydraulic remanufacturer up the road, they said they would be glad to see if they could get parts for the hydros. I have the motor tag number and will see what they can do with that.

[wheeledhorseman 574]

Any idea where it's located on the pump?

Andy

[coldone 35]

My motor had an aluminum tag that fit under one of the housing bolts. i havent looked at my pump cause I havent had to strip it down that far yet.

[Tap53 57]

Here's the numbers I had written down when I ordered part for D-200.

All the numbers they need should be here.

90-1137 IH

310235602

04-SK 16847

Tim

[JamesBe1 82]

I'll check mine in the morning. Hopefully it is the same as the rest. I may have one or two old ones collecting dust (actually rust) somewhere. I'll add that info too. Can't hurt to see if we have mostly the same model(s).

I wonder if we can get a group discount on rebuilds if we all get together. I might consider two of mine if the price isn't off the charts.

[pfrederi 17,881]

90-1137

3102464-03

03-pr 28480

[coldone 35]

Thanks. I wil add my motor numbers

90-1137

3102464-03

03-PD Z322

last 4 could be 2322

[JamesBe1 82]

I looked at my two D's and my spare (junk) motor. I can't find the tag on any of them. I could have sworn that I had in the past seen at least one tag. Maybe tonite I'll pull the wheel off and take a closer look.

[Kevin Bowley 130]

I believe it is a Sunstrand 930 transmission, mine is the same as the others, 90-1137 IH

[Hodge71 664]

90-1137

[JackC 617]

From my 1977 D-160.

The tag on the trans-axle indicated the following:

Sundstrand 90-1137 LH

3102464-04

04-TB 1458

Does anyone know how to decode the numbers?

[wheeledhorseman 574]

Here’s my best shot on the numbers based on a bit of research

90-1137 is a sundstrand reference to specific transmission, in this case one they built built for Wheel Horse.

Taking 1974/75 as an example auto trannies were as follows:

Sundstrand 90-1136: B-100, C120,

Sundstrand 90-1137: D-160, D-180, D-200

Sundstrand 90-1140: C-160

I haven’t checked mine yet but I’d expect 90-1137 to appear on both the pump and motor units as they are separated in a D transmission. I'll try and look tomorrow.

3102356 and 3102464 are the Sundstrand reference / part number for the specific pump unit (we know there are two different casings with different motion controls fixed externally to them).

Not sure about the -02 and -03 but these could be revisions perhaps?

The last sequence of nn xx nnnnn – I’ve really no idea, production numbers / date code / serial perhaps.

I’m almost certain that the 90-1137 does not indicate Sundstrand Series 90 technology. If there is a similarity between these transmissions and a specific Sundstrand ‘Series’ then the closest I’ve found is to ‘Series 15’ and I suspect that the transmission built for WH was one of the variants based on date, similarities between manuals, and, it has to be said, the Sundstrand part numbers for components specific to the 15 series which appear to be 310 followed by a further four digits.

These can be rebuilt because generic parts like replacement plates, piston and cylinder block units appear to be available but I suspect these are aftermarket products rather than OEM. I also suspect we’re talking expensive! I also picked up from a conversation with a specialist in the US that in the case of springs, ball bearings, O-rings and the like, they simply use standard parts.

If any of you find a helpful chatty local company then I’d dearly love to know if the WH tranny is a variant of the Series 15 or if not then which series it belongs too. Sorry about another ramble but I know some of you appreciate.

Must try and remember to look for the numbers on my D tomorrow.

Andy

[coldone 35]

Here’s my best shot on the numbers based on a bit of research

90-1137 is a sundstrand reference to specific transmission, in this case one they built built for Wheel Horse.

Taking 1974/75 as an example auto trannies were as follows:

Sundstrand 90-1136: B-100, C120,

Sundstrand 90-1137: D-160, D-180, D-200

Sundstrand 90-1140: C-160

I am suspecting that the 90-11xx number is Sundstrands unique ID code for a pump and motor that the WH engineers spec'ed out. In the states this is refered to as an propriatary part. A company (WH) contracts another manufacturer (Sundstrand) to make a part to a specific set of parameters set by the company (WH). It could be something as simple as bolt spacing, mounting option, tolerances etc.. In my expeirence with these types of propriatary assemblies the manufacturer (sundstrand) will use mostly off the shelf parts for the assembly to meet the customers demand. Most companies (WH) do not want the expense assaciated with a fully custom assembly, think retooling an entire assembly line. The advantage to us (the end user) is that alot of parts will interchange with other standard assemblies and that rebuilding tolerances and techniques are not unique to the propiatary assembly.

My hopes are that there will be parts that are interchangeable with current production units, valve plates, gaskets, and cylinder assemblies. My guess is that the motor shaft will be unique and that the relief valve settings will be unique.

If it does turn out to be 100% propriatary the we can contact toro to see if we can get a letter of release for the info from sundstrand.

[wheeledhorseman 574]

Another jigsaw puzzle piece.....( and another reason for suspecting that these were based on 15 series components)

Model / product numbers for Sundstrand 15 series hydrostatic pumps and motors designed to operate as separate entities began with the digits '15' but the model / product numbers for 15 series transmissions, where the two are designed to be physically attached to each other, began with the digits '90'.

This was true for both inline and 'U' configurations (where the pump sits on top of the motor).

Although the WH 'D' series tractors have a separated pump and motor, the pump and motor are actually designed to go together as a single unit hence the '90' classification. The manifold that connects them was a specifically WH thing.

Andy

[coldone 35]

Finally have gotten some info. Very long story shorttened,

LJ Fluid power

10118 S M 43 HWY

DELTON, MI 49046-9602

(269) 623-5136

Has the parts we need, valve plates, gaskets, cylinder assy etc. Most of the pump parts are interchangable with the 15 series sundstrand pumps, valve plates and such. The unique stuff is in the motor, thats pretty much non interchangable with anything. He said to just give him the wheelhorse part numbers from the manual.

His prices for parts are comparable to what I am seeing on ebay for the sundstrand 15 series parts.

The man to ask for is LJ himself.

For our brothers across the pond, I am sure we can get you the parts you need.

[wheeledhorseman 574]

:banana-wrench: Great news and a valuable addition to the hydrostatic knowledgebase!

Always suspected that the WH/Sundstrands were based on 15 series so it's also great to have that confirmed also.

It may well come to needing to take you up on that offer sometime in the future but I'll see what I can find out re availability of 15 series parts over here when I get a chance.

Andy

[JamesBe1 82]

That's great to know. Now we aren't stuck in limbo whenever we have pump problems.