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1600 transmission

The Oliver Gang Message and Discussion Board » All Things Oliver Archives Jan 1, 2008 - » 1600 transmission « Previous Next »

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mark endres
Posted From: 64.33.250.136
Posted on Sunday, June 8, 2008 - 10:19 am:   

I am having trouble with my 1600 diesals transmission. It feels like it pops out of gear when your driving it then when you push in the clutch and sit there for a second you can feel it grag again then it will go. It does it in high or low. Any info to help would be great. Also the fluids are full. Thanks
 

John Schwiebert
Posted From: 209.143.51.215
Posted on Sunday, June 8, 2008 - 2:09 pm:   

By high and low range do you mean high and low in the transmission or high and low range of the hydrapower. Is this a rowcrop tractor or some other model(utility, wheatland industrial, etc?)
 

mark endres
Posted From: 64.33.250.136
Posted on Sunday, June 8, 2008 - 10:19 pm:   

The hydra power,row crop.And I meant grab not grag.Thanks
 

Chris Losey (Admin)
Posted From: 72.171.0.144
Posted on Monday, June 9, 2008 - 10:14 am:   

Does the chain coupler on the rear of the hydra-power keep turning even when the tractor stops? The 1600s had that area covered up fairly well, so be careful looking at it. You might be able to see the chain between the base of the dash pedestal and the front of the transmission.
 

mark endres
Posted From: 64.33.250.136
Posted on Monday, June 9, 2008 - 11:02 pm:   

It does not turn when it happens.
 

Chris Losey (Admin)
Posted From: 67.142.130.19
Posted on Tuesday, June 10, 2008 - 8:32 am:   

If the chain stops turning, then it is not in the main transmission. It has to be in either the hydra-power or the main clutch.

I've got 2 scenarios. First, something is wrong with main clutch.

Second, and this is the one I am going to put my money on. The nut on the output shaft of the hydra-power has come loose. This is allowing the output sprocket to slide back on it, as well as letting the shaft move forward in the unit. The sprocket comes off the splines, making it feel like it popped out of gear, and the tractor stops moving. Taking the load off by pushing in the clutch and the vibration of the engine let it slide back on the splines a little, restoring your drive for a little bit again.

With the engine shut off, reach in there and grab the chain coupler and move it around. The rear sprocket may wiggle slightly, but the one on the hydra-power shouldn't wiggle at all when everything is the way it should be. If it slides in and out of of the hydra-power, that means the nut on the end of the shaft is loose. You might be able to take the chain off and get the nut back on and tight, but it would be very hard to see what you are doing, let alone getting tools in there to do it. Most likely, the engine is going to have to come out so it can be fixed right.
 

John Schwiebert
Posted From: 209.143.51.146
Posted on Tuesday, June 10, 2008 - 9:54 pm:   

Well I have a third scenario. The problem is as Chris mentioned. Without seeing the cover on your unit a lot of changes were made in the production of the 50 series. Direct drive is controlled by hydraulic pressure from a self contained pump. In the 1600 these seals were O-rings. They can fail resulting in low clutch pressure for direct drive. Another problem was in the cover itself. I would need to dig through my old serice bulletins but I have seen some problems inside there causing low clutch pressure as well. Also in low range the way you describe it your one way (sprag) clutch will need replacing. Yes the engine will need to come out to repair the problem.
 

mark endres
Posted From: 66.231.23.183
Posted on Tuesday, June 10, 2008 - 10:21 pm:   

I will check the coupler in the morning. When you push in the clutch and it grabs hold again it is kind of a soft grab so the third scenario is kind of what it feels like but i will check the coupler.We never have done anything to the tractor but put in a clutch a few years ago. After that it would doit every once and a while but never enough to trace it to anything.Now it has gotten terrible. My dad is retired and uses it to mow and push snow is all now.To good of a tractor to let go of.Thanks for your help guys.
 

mark endres
Posted From: 64.33.250.136
Posted on Sunday, June 15, 2008 - 1:31 pm:   

Well i checked the coupler and it seems fine then a couple days later i took it to my place and when i took off down the road every thing worked fine but as i got about 3 miles down the road i stopped at a corner and when i took off it only started in low range and later on it would not go unless you put the clutch in and let it grabhold then you would go. It seems like it worse going down hill. Sometimes when you throttle up it seems like a hydrostatic tractor. So is the hydro pump going out and how hard is it to fix? I am somewhat mechanically inclined so could i do it with some help of other or not? Also can we redo the pump or do i need a different pump? And thanks a bunch for your help.
 

Chris Losey (Admin)
Posted From: 67.142.130.14
Posted on Sunday, June 15, 2008 - 11:56 pm:   

After getting more details, it sounds like a few things are going on in there. It really seemed odd to me that it acted the same way in either high or low.

The pump only provides lube oil in low range, it is all mechanical engagement. The high speed (direct) needs pressure to work. It could be the pump, or just very leaky seals, but both require a tear-down to fix. I don't think they are hard to fix, but you will need a press to compress the return spring on the direct drive piston. An Oliver shop manual goes through the procedure in very good detail. With one of those and the right tools, you should be able to do it.
 

mark endres
Posted From: 64.33.250.136
Posted on Wednesday, June 18, 2008 - 11:21 pm:   

Well i found a mechanic that has done a few and he said the parts to rebuild it would cost about $1500 and labor $500. But we found a used one with a year warrenty for $750. So since we dont use it hard or very often were going that route. Thanks for all your help guy and wish us luck we have owned this tractor since the early 70s and it has been a great tractor and we hope to keep it running for years to come.

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