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7245 hydraulics

oliver

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oliver
This might sound like a dumb question, but I don't have access to an operator's manual . Can someone explain the function of the controls for the 3 point lift? I know which lever makes it raise and lower, but what does the shorter lever on it's left do? Also, there are remmnants of a control on top of the lift housing, but no linkage hooked to it. The workshop manual shows a small lever hooked to it by rods and balljoints. What is it's function?
The problem the owner is having is keeping the lift arms in position while running a rotary cutter (bush hog). He says the arms will drop randomly and have to be corrected, but sometimes they raise unexpectedly. This tractor has been used and abused, but is in generally good condition. I hope there is some adjustment for sensitivity in the hitch. I believe the lift cylinder is in pretty good shape, as the hitch will stay up for a while after the engine is stopped, and will only fall slowly (probably stay up for an hour or more).
I guess what I'm hoping is that there is a control such as Deere has that will allow the operator to select either draft or position control, or a compromise in between. Any help will be appreciated.
 
I think you are referring to the lever which adjusts the draft.
The 'random lifting and dropping' does sound like it's set in draft mode.
For topping you should be in 'position' (lever right up/back) or 'mixed' (in the middle).

This lever does tend to get stiff due to lack of use - it does not sound good if you are seeing something apparently disconnected.
 
Thank you for the answer. I'll be back at this farm later this week, and I'll check it further. I think I know what I have to do now. Oliver
 
If you can set it in the mixed position, perhaps 'bypassing' the lever if need be, it will do 90% of jobs OK.
Draft is mainly for heavy 'in ground' work such as ploughing.
The top link is sensing changes in the load pattern on the linkage and trying to make automatic adjustments to keep the implement level.

It can be quite dangerous having it in Draft all the time as there's a risk of sudden lifting or droppping while you're trying to attach an implement for example.
 

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