4200 Hydrostat Problem: John Deere Review  -- John Deere Tractors Discussion Forum and Review 4200 Hydrostat Problem: John Deere Review -- John Deere Tractors Discussion Forum

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 05-04-2004, 10:03 Post: 85165
lockwoodfe
2004-05-04 10:03:05
Post: 85165
 4200 Hydrostat Problem

I am having issues with my hydrostat transmission when going downhill. The hydrostat periodically no longer holds the tractor back and it begins to free wheel down the hill. After a few moments of coasting, the hydrostat will re-engage abruptly. Does anybody know the cause of this?






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 05-04-2004, 10:08 Post: 85167
Chief



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 4200 Hydrostat Problem

Are you positive that it is the hydrostatic transmission that is slipping or are the rear tires loosing traciton and sliding down the hill? My 4410 will do this if I attempt going down a steep hill in 2WD. In 4WD I have no problems at all. Have you tried engaging 4WD and attempting the same hill?






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 05-04-2004, 10:09 Post: 85168
Billy

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 4200 Hydrostat Problem

How long has it been since you changed hydro filter and cleaned the suction the screen?

They could be almost stopped up and starving the hydro of fluid.
Low fluid level could cause this problem also.






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 05-04-2004, 11:20 Post: 85171
Murf

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 4200 Hydrostat Problem

I think Billy nailed it.

Our big commercial mowers will do the same thing if the hydro. oil level gets low, going down a steep hill can starve the intake line to the pump.

Best of luck.






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 05-04-2004, 11:39 Post: 85172
lockwoodfe



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 4200 Hydrostat Problem

Thanks for the info. I will check the filter and screen.
I am sure the fluid is not low. I just checked it the other day.






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 05-04-2004, 21:03 Post: 85222
lockwoodfe



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 4200 Hydrostat Problem

Well, I changed the filter and cleaned the screen and a quick round trip up and down the driveway (in the dark) seems to indicate it is working much better now. I will test it some more tommorrow. I do have a couple of concerns though. First of all the replacement filter from the dealer was not identical to the one I had. It fit OK but it was about an 1-1/2" longer. Of more concern is that the suction screen was heavily clogged with metal shavings. I would guess I cleaned off about a teaspoons worth. Most of it was very fine, but there were also several bigger pieces about the size of a drill chip. Is this normal??? My tractor has 350 hours on it. According to my operator's manual, I only need to check this stuff every 500 hours.






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 05-04-2004, 21:19 Post: 85226
jdgreen



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 4200 Hydrostat Problem

Is this the first time you cleaned the screen? The first hydro oil change, filter change and screen cleaning is scheduled for 50 hours. Then every 500 hours thereafter. The initial time, it is not unusual to have a teaspoon of metal on the screen. If you see that much the next time, I would be concerned. As far as the filter difference I think deere changed to a longer filter for more dirt capacity to prevent clogging at the normal intervals. I hope the fluid and filter change cured your problems.






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 05-04-2004, 21:22 Post: 85228
kwschumm



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 4200 Hydrostat Problem

This is pretty normal for the first change since sometimes there is debris left over from manufacture. Is this the first change? I know the newer JD machines all seem to require a change at 50 hours and each subsequent 200 hours IIRC.






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 05-04-2004, 21:26 Post: 85229
Billy

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 4200 Hydrostat Problem

A couple of years or so ago, John Deere changed to a bigger filter and shortened the maintenance schedule on the 4000 series tractors.

The new hydro filters are bigger and the metal filings are normal (on the first screen cleaning).

The new schedule is to change hydraualic oil, filter and clean suction screen after the first 50 hours. Change filter and clean suction screen every 200 hours. Change hydraulic oil, filter and clean screen every 400 hours.






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 05-04-2004, 21:29 Post: 85231
Chief



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 4200 Hydrostat Problem

Perhaps the 4200 is different but the 4210, 4310, and 4410 call for replacement of the hydro filters and cleaning of the suction screen every 200 hours after the 1st 50 hr. break-in service.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

Thread 85165 Filter by Poster:
Billy 2 | Chief 2 | DRankin 1 | husky125 2 | jdgreen 1 | kwschumm 5 | lockwoodfe 7 | lucerne 2 | Murf 1 |




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