Massy Ferguson 12 hydra speed

Asantiago0985 · Apr 27, 2019

Hi everyone this is my first time posting to a fourm. So I picked up a massy Ferguson 12 last weekend and when I got it home i cleaned the carburetor and it fired up. The problem is the hydrostatic drive doesnt work properly. With the wheels up the wheels move great but as soon as you put the wheels on the ground it stops moving. I checked the freewheel screw and it seems to be in the right position. I noticed that it will freewheel even if it it is in the drive position. Has anybody had this problem or found a rebuild kit for this transmission. Btw the transmission is a 90-2068 sundstrand. Thanks all.

504 · Apr 27, 2019

First guess is check for a sheared key in the rear hubs. If you can push it look to see if the axles
are turning.And make sure the coast valves are up,they are know to stick down.

BIG RUH · Apr 28, 2019

Check under the seat for the hydraulic tank resevoir and make sure its full of oil

Asantiago0985 · Apr 29, 2019

(quoted from post at 18:54:28 04/28/19) Check under the seat for the hydraulic tank resevoir and make sure its full of oil

so I already checked that had fluid in it but had a ton of gunk in it. So I drained all the fluid and pulled the pan and I want to replace the filter but I cant find a replacement filter. Also the engine was running high even with adjusting the carb so it was getting air somewhere so I did a leak down test and low and behold no gasket in the head or crankcase and piston and head are shot. Cylinder is fine block is fine. So I'm going to rebuild it. I'll post updates as I go thanks for the information.

Asantiago0985 · Apr 29, 2019

(quoted from post at 18:54:28 04/28/19) Check under the seat for the hydraulic tank resevoir and make sure its full of oil

so I already checked that had fluid in it but had a ton of gunk in it. So I drained all the fluid and pulled the pan and I want to replace the filter but I cant find a replacement filter. Also the engine was running high even with adjusting the carb so it was getting air somewhere so I did a leak down test and low and behold no gasket in the head or crankcase and piston and head are shot. Cylinder is fine block is fine. So I'm going to rebuild it. I'll post updates as I go thanks for the information.

Asantiago0985 · May 23, 2019

So just an up date motor has been rebuilt but having problems with the carb. Any replacements or rebuild kits available. The flute seems to keep gitting stuck. Plus one pin hole I just cant get to open. Thanks again.

Massy Ferguson 12 hydra speed

Asantiago0985

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504

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