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#1
04-23-2020, 08:43 PM
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Odd 149 Sundstrand part...?
I've been trying for hours now to figure this one out...
I'm working on trying to cure a charge pump leak on my 149. The rear end serial tag codes it correctly as a 149 rear (2050047u417133) so I've got at least that going for me. My leak is coming from the gerotor charge pump housing so I ordered up a new O-ring, needle bearing, and lip seal and dove in. I got everything torn apart and discovered that my rotor housing is actually 2 pieces. There's the part at the front that is shown in the exploded diagram where the o-ring lives but there is a second plate behind it that seals to the transmission itself with what I can only describe as a plastic gasket/shim. This arrangement isn't shown on any exploded diagram I've found (Simplicity, Deere, Wheel Horse, other Cub Models, the Cub service manuals, the Danfoss 15U service manuals, etc, etc). I even watched a few videos of guys rebuilding 15Us and never saw a housing like mine. Naturally, since I can't find any trace of it's existence on Earth, the weirdo plastic gasket in mine has a tear in it...  In the attached picture you'll see from left to right, the "extra" plate, the plastic shim/gasket, and then the regular rotor housing that looks like everybody else's. So... Anyone have any clues they can loan me here? I'd hate to just RTV that thing on, especially since that plastic part has a weird passage in it that none of the other parts do and I have no idea what job it is serving. I'd much rather just buy a new one. 
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#2
04-24-2020, 08:11 AM
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I also, have no clue to what that extra Plate & Gasket are. This image is what I have come to know.
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#3
04-24-2020, 08:23 AM
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Not sure on the history of your machine... Do you know if anyone ever used it as a "puller"? Those could be aftermarket or spacer plates.
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Cooperino 100, 104,125, 126, 2x129's, 804, 1211, 1641
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#4
04-24-2020, 09:20 AM
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Don't use silly cone, I would try to make a thin paper gasket to duplicate what you have.
you could try Yamabond or honda bond as they sometimes hold up to higher pressures. You appear have a non stock or modified sunstrand hydro that someone in the past installed would be my guess. All the ones I've seen did not have the plate, but I'm by far, not an expert. Sundstrand built for a lot of mobile vehicles besides garden tractors.
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#5
04-24-2020, 09:27 AM
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Well... I think I'm going to give Sun Source a call today and see what, if anything, they can tell me.
edit: Sun Source has been pretty unhelpful and bluntly refused to even attempt to look up parts for power equipment... Probably try Danfoss next. edit 2: Heard back from Danfoss... They want to sell me an entire housing, gear, and input shaft as they discontinued the old parts long ago. I don't believe I'll be doing that. This is what I'll be doing instead: https://www.mcmaster.com/1076N11
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#6
04-24-2020, 02:08 PM
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Mr coffee...
The part number for that gasket is 398570-r2 and you can find it here. https://www.ihccw.com/transmissions....roduct_id=1270
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Up to 533 and counting... I give up updating my profile!
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#7
04-24-2020, 02:59 PM
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Quote:
Funny you mention that as I've been in a conversation with Marlin about exactly that part already and his take on it is that I will also have to replace the entire pump. I just asked him if he'd be willing to cut me a break on his $10 flat rate shipping (I'm in the same state and a repeat customer) and let me give it a whirl. I'm thinking that the visual differences are just slight changes in design revisions over the years as it looks like it would likely fit up to my transmission OK. FWIW, I'm 90% done drawing it up for McMaster to cut them for me and 398570 is NLA (other than IHCCW's inventory). If he's unable to help me out a little on price, I'm going to go ahead and just pay double to have McMaster cut me about 10 of them instead of just buying one... then the world will have more inventory of them at least. If it comes to that, I'll share the DXF here if I can.
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#8
06-11-2020, 01:24 PM
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So... I got it fixed. I did end up designing my own gasket and having it custom manufactured. If anyone wants the DXF just PM me and I'd be happy to share it. For that matter, I now have a surplus quantity of those gaskets if anyone needs one. Mine are considerably thicker than the stock version, but everything seems to be fine. I have 10-15 hours on the repair now without issue and I imagine if the added thickness was going to hurt something it would have happened pretty much immediately. Nothing ventured, nothing gained.
Should anyone be interested in the entire process of what I did to get there, you can check out my YouTube channel for the video I made on the subject. ...and when I say entire process, I mean it. There was a lot of research and tinkering to get there, plus I never shut up.  https://youtu.be/IqKuUFsmSzs
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