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 | neumon
Join Date: Posts: 1 
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2003-04-24 53691
I have a 4100 with the hydrastat transmission. I have a 60" finish pull behind mower. When I attempt to let the mower down from the completely raised position, it tends to bounce or jerk when it goes down. It doesn't go down smoothly. I have attempted to adjust the knob for this but haven't found the position where it will stop this. Any advice?
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 | DRankin
Join Date: Jan 2000 Posts: 5116 Northern Nevada 
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2003-04-24 53694
I have a 4100 Gear. I found the best way to "set" the rate of drop with a heavy load on the back is to close the valve completely and then push the three point lever all the way down. Then I crack the valve very slowly until I get the rate of drop I want.
If you are still experiencing problems after that then I would look at some hydraulic system maintenance, new fluid/filter, clean the intake screen, etc. ....
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 | Chief
Join Date: Jul 2003 Posts: 4297 Southwest MiddleTennessee
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2003-04-24 53700
I agree! What Mark said! ;-)
Randy ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2003-04-25 53748
When I first got my used tractor the loader used to jerk a lot when I tried to lower heavy loads slowly. Turned out that it was a lubrication problem. The problem disappeared after I replaced 90-degree fittings with 45-degree ones so I could get a standard gun on them and greased them a few times. It still bounces if I lower heavy loads too fast but I believe that's normal.
There really aren't any grease fittings on my 3ph that might cause a similar problem. However, bent or poorly lubricated linkage arms or ball ends might bind the load. Binding also might be possible if the lower link arm mounts on an implement were very wide or very narrow for the tractor. I wonder if the same problem happens with a different implement that weighs about the same as the mower.
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