Calling all tractor experts
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Fleet Mechanic
Joined: Sep 2002
Posts: 1,769
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From: Gretna ,LA.
Calling all tractor experts
We have a John Deere backhoe/front loader, I think its a 450,but everything works fine except moving the tractor, it barely moves and a little hill will stop it.Sometimes when i raise the front bucket it acts like it wants to take off, but still does not go right.Fluid is full,any suggestions?
Senior User
Joined: Jan 2004
Posts: 427
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From: clyde,ny
have you changed the trans filters etc.if the anwser is yes you may have a bad torque convertor.not sure about the JD brand,do work on CASE stuff,they cant be that different.does all your linkage move free?valves all working properly?maybe more info would help.
Posting Guru
Joined: Oct 2002
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From: Raleigh, NC
What kind of drive is it, hydrostatic or gear? If its hydrostatic, make sure the "freewheel" selector is disengaged. Trying to move a hydro tractor in freewheel mode is not good on the hydro pump.
If its sync-shifted or geared then your converter might be on the fritz.
If its sync-shifted or geared then your converter might be on the fritz.
Senior User
Joined: May 2001
Posts: 475
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From: Southern IL
First of all I would change filters. Then I would have your hydraulic pump checked out. It may be getting worn out or have problems. It should be mounted on the front side of your engine, driven by the crank as most Deere tractors are. If I remember right, it should put out 2200 psi. There should also be an adjustment screw somewhere on the pump to adjust the pressure. If you can gain access to a service manual and guages you could check the pressure yourself. Are you sure its not a 410 and not 450, the only 450 I can think of is a bulldozer. Goodluck, and hope that maybe I was of a little help.
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Fleet Mechanic
Joined: Sep 2002
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From: Gretna ,LA.
Yeah not quite sure on the model #, but it is hydro drive.So the pump on the side drives it too?I hope it's something besides having to split the tractor.
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Fleet Mechanic
Joined: Sep 2002
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From: Gretna ,LA.
How can you tell if its hydro or gear driven? I assume its hydro because you can stop+go without the clutch being depressed.
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Joined: Dec 2003
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From: The County
When you change your filter,check for small particals in the filter housing.We had a problem similar to yours.and the bands were getting worn.Somehow,the particals got into the system,and we ended up changing it twice to get it all out.I think part of the problem was we didn't change it often enough.But with our problem,it acted up a bit before we ended up changing to oil and filter.I hope it helps changing the oil and filter.John Deere parts are a little pricey,espically tranny overhauls.Good luck with your problem.
Posting Guru
Joined: Oct 2002
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From: Raleigh, NC
If it is hydrostatic, there are pedals you press to move the tractor with the only clutching being on startup and to lock the parking brakes.
But you might also have a sync-shift as you only use the clutch to select a range and you can shift within that range without using the clutch.
But you might also have a sync-shift as you only use the clutch to select a range and you can shift within that range without using the clutch.
Elder User
Joined: Feb 2002
Posts: 910
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From: Maryland
I have split a few 310s no newer than about 1985 but not sure about a 410. But I had a few do that and found a few different problems. If you have the system I think you have the very first thing I would do is check the charge pressure. It should be about 130 psi or so. Before we go any farther does your tractor have a clutch pedel and reverser handle? And does it have the 2 hyd canster filters under the rh side one pointing down and one pointing twards the front? And only one dip stick to check to check the hyd oil in front of the seat?
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Fleet Mechanic
Joined: Sep 2002
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From: Gretna ,LA.
I use the clutch to change gears, but to move the shift lever on the steering column f-n-r, no clutch is needed.I can put the column shift in nuetral and come to a complete stop, and resume again by putting it in forward with the column shift with out ever using the clutch.It moves like a tree sloth very slow.
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Fleet Mechanic
Joined: Sep 2002
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From: Gretna ,LA.
Originally posted by 57_ford
I have split a few 310s no newer than about 1985 but not sure about a 410. But I had a few do that and found a few different problems. If you have the system I think you have the very first thing I would do is check the charge pressure. It should be about 130 psi or so. Before we go any farther does your tractor have a clutch pedel and reverser handle? And does it have the 2 hyd canster filters under the rh side one pointing down and one pointing twards the front? And only one dip stick to check to check the hyd oil in front of the seat?
I have split a few 310s no newer than about 1985 but not sure about a 410. But I had a few do that and found a few different problems. If you have the system I think you have the very first thing I would do is check the charge pressure. It should be about 130 psi or so. Before we go any farther does your tractor have a clutch pedel and reverser handle? And does it have the 2 hyd canster filters under the rh side one pointing down and one pointing twards the front? And only one dip stick to check to check the hyd oil in front of the seat?
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Joined: Dec 2003
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From: The County
I may be wrong ,but with the John Deere I have used,I thought the hyd.and tranny were 2 different systems.I'm not sure about a backhoe though.We just use the frontend loaders.If they are 2 different systems,that is strange.
Elder User
Joined: Feb 2002
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From: Maryland
Ok I think we are talking about the same system. Their are several things it can be. It has a dry clutch that realy isn't used but still can cause this problem i have only seen this once with a tractor with over 10000 hrs on it. Their is also a charge pump releaf valve that can get stuck open. But the boom will shudder at first when you try to use it. I would test the charge pressure first. Their is a reverser valve under the tractor that has a port in the bottom of it. For testing the pressure you will need a special JD fitting to do this I made one out of a 5/16 bolt.
I think some is wrong with the transmission charge pump. If it was the transmission you should still have reverse.
I think some is wrong with the transmission charge pump. If it was the transmission you should still have reverse.