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Found 10 results

  1. I know in the past someone posted up the sizes/numbers for the o-rings that fit between the hydro pump and the steel lines' manifold blocks on the D-series - I'd imagine the ones at the pump end and rear axle are the same ....? Will be changing my pump soon due to the hydro to engine coupler blew out it's splines and took out the shaft along with it . Evidently a trailer weighing around 2.5 tons was too much.... I'll try to write up a post on how to build a new coupler from a later model C series pump pulley's center ring and a worn D coupler as well - trying to finish up the Ross steering box right now . Sarge
  2. I am currently towards the end of a 1276 restoration project, I just got everything back together and sent power to the transmission for the first time. Without the pump on and the gear in neutral, I can spin the axels by hand, one goes one way, the other, the other way, giving me indication that I don't have a differential problem. When I put power to it, everything appears to work as advertised, except when in gear I can stop the Axel from spinning with my hand, little to no resistance. I do have a bit of a rigging problem from worn linkage, but I can move the cam by hand to get it fully in gear. The tow gear in completely closed. Just flushed and filled with fluid. I have not changed the filter. Any idea on why there seems to be no power in the axels??
  3. Tow valve?

    I know it is not best practice to push a hydro around. I've searched owners manual I printed from this site, as well as tranny manual....it seems it's on the left side but actual location is vague to me. I have a 73 16h hydro. The no name year I believe. any help would be appreciated thanks
  4. 1976 C-120 Automatic

    1976 C-120 Automatic with 12HP Kohler engine, Sundstrand hydrostatic transmission and 42 inch, side-discharge mower deck. Also comes with a Wheel Horse dump cart (which is in rough shape); otherwise, no other attachments or implements. Owned since new by same family; currently third generation. Gently used every year for residential grass cutting only (<1 acre). I’ve had it for 9 years and kept it inside; minimal surface rust (mostly paint oxidation). Starts in less than one second, runs well and has been very reliable. Currently will need carburetor work. In addition, the lights, seat weight sensor and mower deck lift function have not been operable for some time. In the last 9 years, new parts include: PTO plate, left and right front wheel spindles, sparkplug, ignition coil, battery, starter solenoid and PTO drive belt. It weighs about 700 pounds and purchaser will be responsible for transportation.
  5. I'm looking for the dimensional specs on a drive belt for a Sundstrand hydro on my GT 14. The original WH part # is 8334. Any info anyone can provide would be much appreciated. Also any info on recommended after market belt manufacturers of the dimensional size of the OEM 8334 belt would be helpful. Regards, Steve
  6. I have developed a kit that allows a Wheel Horse / Toro hydrostatic tractor to be operated by a pedal on the right side of the tractor. The original forward/reverse lever can be retained or removed. The kit includes everything needed to install the pedal kit and installation is simple with the help of a downloadable installation manual. Additionally, only one (1) 1/4" hole will need to be drilled which can be done by a hand drill. No other drilling or cutting will be necessary. Any tractor with this kit can be converted back to stock without any visible evidence that kit was installed. However, you'll never want to do that The kit operates very simply and similar to modern tractors. When the pedal is pushed forwards the tractor will move forwards. When the reverse pedal is pressed downwards, the tractor will moved in reverse. If the operator takes his foot of the pedal at any time, the pedal will automatically center itself and the hydrostatic transmission will return to neutral (stop). This enables the operator to use both hands on the steering wheel or one hand on the wheel and the other operating an attachment like a snow blower, plow, etc. The foot pedal is custom cast in Aluminum, uses brass bushings to minimize wear, and it closely matches the OEM Wheel Horse BRAKE pedal commonly found on 8-speed manual transmission tractors. Modifications were done to the pedal to add the reverse pedal and adapt the pedal to the rest of the kit. For the most part, the pedal looks like it was designed and manufactured by Wheel Horse / Toro. Additionally, a grease fitting has been adapted to the pedal to further minimize wear and tear and if the brass bushings ever wear out they are fully replaceable without having to buy a whole new pedal. The pedal kit fits the following series tractors with Eaton hydrostatic transmissions: C-1X5, 300, 400, 500. My kit can be adapted to older hydrostatic tractors with the Sundstrand transmission, however, you will need to find an updated hydro cam commonly found on ebay. Message me for more information. Here is a link where you can download the installation manual: https://www.dropbox.com/s/zp8ty4oxctzvt8a/Wheel Horse Hydro Foot Pedal Instructions V3.pdf?dl=0 I am selling these kits for $250 shipped to anywhere in the United States. I offer multi order discounts as well. I will also sell to other countries for additional shipping charges to be determined. If anyone has any questions please feel free to PM me or post your question here and I will be glad to help. Or you can email me at mattdarling02@hotmail.com. Thanks! Below are pictures of the complete kit and the pedal installed on the tractor. Some modifications have been made since these pictures were taken. For example, the reverse pedal is now cast in aluminum instead of the steel pedal shown below.
  7. I hooked up an implement lift valve and now the sunstrand 90-4620 hydrostatic does not have enough power to load tractor on to a trailer. If I unhook the valve the hydrostatic has all kinds of power. Is there something that Im missing or do I have the hose hooked into the wrong ports? Does anyone have a diagram on how the hose hook to the hydrostatic and what ports.
  8. My 1979 C-161 has the Sundstrand pump 90-1173 transaxle. The transaxle needs work. the Sundstrand pump works but I wonder what shape its really in as the tractor appears to have had a lot of use. since the Eaton 1100 is the better hydro, what would be required to do a complete pump & transaxle swap from a Sundstrand to a Eaton 1100. Has anyone actually done a Sundstrand to Eaton swap?
  9. Sundstrand Challenge(s)

    Working three horses with Sundstrand hydros and knowing that the day would surely one day come when I’d need to fix one of them I acquired a ‘for spares or repairs’ C-121 auto early this year Described as having an engine that was reluctant to start but will move forwards and backwards I found that whilst it was strong in both directions the hydro takes a while to jump into action once you’ve finally managed to get the engine going. It’s a fault that’s appeared on the forum before and had clearly existed on this tractor for many years judging by the way the keyways on the hubs and axles had been totally destroyed by the jolting action, so much so in fact that a bolt through the axle and hub had been added on one side to transfer drive and keep the hub on! For the price I paid, it would provide an ideal opportunity to have a go at the disassembly and re-assembly of a hydro pump and motor without putting any of my fleet at risk. A nice little ‘no pressure’ learning exercise for the winter was in the offing. Seemed like a good scheme until only a few weeks later the hydro on my D-200 died, it had been working hard with no warning signs or sounds when it failed. Guessing that the symptoms i.e. no motion and no implement lift function could mean the splines on the pump drive had stripped (though I’ve learnt by now not to try second guessing Sundstrand faults) there was no option but to move the three point and ram etc across to my other D-200 for the season and the winter project now needed a bit of re-thinking. If I could cure the fault on the C-121 transmission and it was in otherwise good order I could perhaps use the motor from it for the D but there would be a problem with the pump in that the motion control shaft is on the opposite side for a D series resulting in needing to use some parts from the original D series pump to put together a suitable arrangement. What I really needed was a good pump with motion control shaft available on the correct side but here in the UK D series tractors rarely come up for sale, good hydros from one being parted out, never to my knowledge! Lady Luck smiled on me in September when a complete C-161 transaxle with believed to be good hydro appeared on a well known site and I managed to grab it for the starting bid price . In terms of the hydro, it’s a Sundstrand 90-1173, same as used on the later D series, and has a ‘universal’ motion control shaft which protrudes from either side of the pump casing – The tractor had been parted as the engine was beyond repair so there was a good chance the hydro was indeed good but that would need testing. To do this has meant putting the transmission onto the C-121, getting the engine to start and testing it out thoroughly. It went well in both directions then the real test of confronting an immoveable object with it. Even with weight on the seat, the rear tyres continued to excavate the surface of the drive so I guess the hydro can be considered to be good to use. It appears then that I have enough bits to stand a reasonable chance of getting the D-200 going again using the pump and motor from this transmission. It also means that I’ll be left with a good transaxle which I could use with the pump and motor unit from the C-121 and maybe that tractor is worth saving after all rather than being parted. If I can manage all of this then finally I get my chance with the old D pump and motor to have a go at disassembly and inspection etc. Trying to put all of this into a logical order, I’m going to take the head off the engine to hopefull find out what's up with it while the C-121 still has a good tranny attached and, while the 'jolting' tranny is off, I'll check out the acceleration valves as a first step. I don’t have the time to be working on the project every day at the moment but I’ll keep you posted on progress and I’ll more than likely be needing to pick the brains of those of you with knowledge and experience. Hints, tips and advice always welcome.
  10. My 75 C-160 with a sundstrand 90-1140 hydro was getting weak, so I put in a sundstrand 90-2046 from my 72 charger 12 parts tractor. Everything fit up and it works fine. My question is can the hydraulic lift cyl be used on the 90-2046, and if so ,where do the two lines connect on the 2046 ?? Thanks for any help. Ed
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