1725 Hydraulic Lift Position Control - HELP!

Brault · Jan 21, 2005

I'm a first-time tractor owner, 2nd day with a 1998 NH 1725, 610 hours, with FEL and blade for snow removal. The position control does NOT work like in the manual, which says when the "lever is moved to a higher or lower setting in the quadrant, the system repositions the equipment to a higher or lower position and maintains the selected position". Further, it says "there is a definite relationship between the position of the control lever and the position of the equipment". I took this to mean I could move the blade up or down to a new position simply by moving the lever. However, moving the lever simply starts the lift moving, and it keeps moving until I nudge it back, ending up jerking up and down missing the level that I want it to stop. The dealer says this is normal operation -- is it?? To make matters worse, the lever is very stiff, so moving it small distances requires tapping and shoving. Is this normal?
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Help!

RodgerF · Jan 22, 2005

Not sure I can help but... I have a TC30 with position control the the 3ph and it works like your manual describes. I will say that it doesn't take much lever movement to move the implement for small adjustments. I don't know much about your tractor but are you sure you have true position control?

I have a small Kubota B6100D. It doesn't have position control. It's either up or down. There is a mechanical stop that can be adjusted for the lowering limit but its easier to just feather the control to get the implement where you want it.

As for the lever, mine is smooth on both tractors. The Kubota acted as you described until I sprayed the linkage down with PB Blaster. You may need to go over yours with some type of lubricant to smooth it up. For routine maintenance I use "Chain Wax". I get it at the Honda dealer for my bike but it works just as well for linkages and such.

Good luck

Rodger

Brault · Jan 23, 2005

Thanks RodgerF - I think the real problem is the stiffness - I'll take your advice and try lubricant on the linkages.

Your picture looks like you have a canopy on your TC30 - was this a NH accessory? Does it work well? It doesn't look like it provides safety protection - is it more for weather?

RodgerF · Jan 23, 2005

The canopy was put on at the dealer's. It's more substantial than it looks. There is a steel perimeter frame attached to the ROPS and the canopy attaches to that. The canopy itself is a thick, molded fiberglass.

It works well. A couple of times I raised the bucket too high and had brush, dirt and small stones bounce right off of it. It does a good job of keeping the sun off of you too. It wont help in a rollover situation but for smaller debris and brush it works well.

Rodger

jinman · Jan 23, 2005

</font><font color="blue" class="small">( To make matters worse, the lever is very stiff, so moving it small distances requires tapping and shoving. Is this normal?
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This seems to be a problem on NH tractors. Your problem may be that the linkage is so stiff you are overcompensating for the amount of change you need. You definitely should not have to shove or tap the control to move it.

Follow your linkage until it goes into the transmission casing. Near where it enters the casing, you should see a castle nut or some type of jam nut that adjusts the tightness of the control linkage. I don't have info on your specific model tractor, but the nut should have a cotter key in it. If you remove the cotter key and loosen the nut, your 3PH control should also become easier to move. If you cannot find this nut or get to it, try lubing the linkage, but I think you will find your tractor is adjustable like most of our other Boomers.

djradz · Jan 24, 2005

Follow JInman's advice. The lever should be relatively easy to move. You should be able to move it slowly, such that the 3pt keeps up, and simply stop at the level you desire. ... or quickly move it to what you think will be the right spot, and see the 3pt move to something close. Tapping, nudging, should not be required. Many, many of us have had to loosen the nut Jim is referring to. I actually took mine off, applied a little grease (or maybe I just shot WD-40 in there - can't remember /forums/images/graemlins/confused.gif) and then put the nut back on, but looser.

Soundguy · Jan 25, 2005

I agree with the others. My EX- NH 1920 had a lever that was a tad stiff. And there is a deffinate point where it 'starts to lift' and you just have to get used to adjusting it where you want it.

Unless you have soem other problem.. like damaged controlls, or a draft sensing lift.. I'd say you need to get it limbered up, and practice with it.

Soundguy

droy · Feb 2, 2005

Nowhere near an expert, but if you're talking about the 3ph, my 1715 had similiar symptoms- it was a small all thread adjusting type link about 3" long, under the seat that local dealer forgot to reconnect after replacing my clutch. Standing at rear of tractor, it is near seat brace on rt. side, & mine was covered by the never used seat belt.