JD4400HST power loss: John Deere Review  -- John Deere Tractors Discussion Forum and Review JD4400HST power loss: John Deere Review -- John Deere Tractors Discussion Forum

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 09-24-2000, 21:30 Post: 20046
max



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 JD4400HST power loss

I have a JD4400HST (currently with about 30 hours). Periodically, when driving down the road, without warning and for no apparent reason, the RPMs will suddenly drop causing a loss of power. Has anyone else had a similar experience with their JD4400 or have any idea what may be causing this to happen?






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 09-24-2000, 22:58 Post: 20049
Mike S.



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 JD4400HST power loss

Max--I have had this same issue (along with lots of others) with my 4400HST. In my situation, it seemed to be worse after tractor had been working for a while and while driving it in road gear, would have to shift into 2nd axle on a level road. The dealer, along with JD DTAC, diagnosed it as brake drag--one of the brakes was set too tight at the factory. My tractor is 19 months old and I would have though that JD would have caught all of these at the factory by now. Eventually my brakes locked up and had to be replaced. One way to check to see IF the brakes are, indeed, dragging because they are adjusted too tight is to look beneath the tractor for the brake rods that go from the brake pedals back to the brakes and see if they can be wiggled or rattled at all. IF they are dragging, you could not rattle the brake rods at all. With this said (from my dealer), I must admit that my tractor has experienced this same RPM drop while in road gear twice after the front end, brakes, PTO and transmission were replaced at 70 hours and it has 140 hours now. It has not had the problem once I found out from my dealer how to check the brake rods to see if the brakes were set too tight and were dragging. (With my luck with this tractor, I figure it will wait until the warranty has expired to act up again, so I will be following any other responses to this thread with interest). Mike S.






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