JD4310 - Losing Hydraulic Power: John Deere Review  -- John Deere Tractors Discussion Forum and Review JD4310 - Losing Hydraulic Power: John Deere Review -- John Deere Tractors Discussion Forum

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 05-07-2006, 17:04 Post: 129037
MacDaddy



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 JD4310 - Losing Hydraulic Power

I have a JD 4310 that is about a year old (100hrs). I was using the FEL today to move some dirt and noticed that it was really struggling with the weight, and lifting very slowly. I had it fully serviced at about 60hrs. The hydraulic fluid level is also good. Any ideas as to what might be wrong?

Andy






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 05-07-2006, 17:27 Post: 129040
Art White



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 JD4310 - Losing Hydraulic Power

Start with a new filter.






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 05-07-2006, 21:10 Post: 129054
earthwrks

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 JD4310 - Losing Hydraulic Power

Is the loader operation jerky or erratic, or is it smooth but slow? After you run it for awhile and run the loader up and down under load, take a look at the hydraulic fluid and see if it is clear or has small air bubbles in it. Then report back with your findings.






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 05-07-2006, 21:13 Post: 129055
Chief



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 JD4310 - Losing Hydraulic Power

I have heard of some dealers skipping over pulling, inspecting, and cleaning the hyd. suction screen. If clogged, it could cause similar problems to a clogged hyd. suction filter. Be sure none of the SCV's are sticking in the open position. This should be very unlikely as you would here the squealing of the bypassing hyd. fluid all the time and the hyd. oil would get hot.






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 05-08-2006, 03:29 Post: 129062
harvey



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 JD4310 - Losing Hydraulic Power

What kind of weight? Heavy wet soil? Front tires squat any more than normal? Rear end light?






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 05-08-2006, 06:03 Post: 129064
MacDaddy



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 JD4310 - Losing Hydraulic Power

The load was normal. About a half-bucket of very dry soil. Its not jerky... just smooth and slow. I will check the suction screen/filter. How would I inspect for bubbles in the hyd-fluid?






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 05-08-2006, 06:54 Post: 129065
earthwrks

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 JD4310 - Losing Hydraulic Power

There's different ways to check for bubbles: pull the dip stick and inspect the oil on the stick; remove the hyd. filler cap and using a flashlight peer into the tank/reservoir if possible; or with loader full down so you don't get hurt, crack-open one or both lift cylinders and look for aerated oil.

What's the chance you were low on fluid to begin with and operated the loader at a steep angle? If yes, then I feel you starved the pump and permanently damaged it. But this should be easy to check by performimg a pressure test. I wouldn't necessarily take the word from a technician who said he checked it.






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

Thread 129037 Filter by Poster:
Art White 1 | Chief 1 | earthwrks 2 | harvey 1 | MacDaddy 2 |




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