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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: 1450b transmission

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Author  [Modern View]

07-22-2014 02:27:43

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Rotten luck that after buying it,can the previous owner shed any light on the problem,it sounds as the transmission charge system is losing pressure and regaining it again,in case the transmission breather/s is blocked try it with the dipstick loose,as I recall there was a suction filter on the line between the transmission housing and the pump,that filter will need looking at to be sure it's clean,I think it was washable,also the suction line itself for damage or loose connections where it could draw air,there is a relief valve under a plug to the left of the charge pump that could be sticking,thing like that would remain stuck,could be the pump is worn and loses its prime as the oil warms up,does this machine have a spin on cannister transmission filter or an element?.


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todd hill

09-03-2014 20:17:14

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 Re: 1450b transmission in reply to AJ., 07-22-2014 02:27:43  
Replaced charger pump, and all the filters including suction and one in belly, it was pretty clean, replaced all fluids,, still doing the same thing. Charger pump was used because they do not make a replacement anymore? any other ideas? Works like a champ cold, twenty minutes it hesistates between directional shifts, 45 minutes wont" push in high range, 1 hour, wont push in any range. trans pressure is good cold, but flucauates with rpm increase. then drops to zero on directional shifts hot, then comes back,, after an hour it is pegged at zero and won"t come back.

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