Quadrant adjustment and position control level questions

timsch · Oct 6, 2017

Hello all,

I'm attempting to adjust the quadrant on my '49 8N. I'm doing so because I don't get any lift until the position control level is at least 2/3 of the way through the travel.

I'm following the procedure in the FO-4 manual, and while simple enough looking, I still have a couple of questions.

1st, I'm supposed to put the position control lever into the horizontal position. I push it toward horizontal, but before I get there, the lever hits a mounting bolt below the seat. I get close to horizontal, but not quite. I was wondering whether the lever had been removed and put back on wrong. The lever has a bend to it, and it bends in toward the tractor. I'd think that it should bend out, but looking at FIG FO135, the lever in that picture looks to bend in as well. So, is mine right, and is close to horizontal good enough?

2nd, looking at FIG FO136, the rocker lever shown is not visible to me on the tractor. It's full of oil - is it down in the oil? I think I've felt it down in there. Looking into the opening, There is a rod going vertically down into the oil. Is the rocker lever on the end of the rod?

Tim PloughNman Daley RIP · Oct 7, 2017

The Position/Draft Control Lever shouldn't hit anything when moved to the horizontal DRAFT control position. Are you sure it is 'hitting' something? It will feel a little stiff until it clicks in.

TPD

timsch · Oct 7, 2017

I do hear the click, which seems to happen about halfway through the travel. Is the click what really matters? The lever stops about 25 degrees before horizontal, after starting at full vertical. Is that good enough? I may just being too literal.

I don't know what the difference is this morning, but the lever is not hitting anything now. The only difference is that the cover is on the opening, whereas last night I had it off.

Caryc · Oct 7, 2017

(quoted from post at 06:26:30 10/07/17) I do hear the click, which seems to happen about halfway through the travel. Is the click what really matters? The lever stops about 25 degrees before horizontal, after starting at full vertical. Is that good enough? I may just being too literal.

I don't know what the difference is this morning, but the lever is not hitting anything now. The only difference is that the cover is on the opening, whereas last night I had it off.

I don't have to worry about that little position / draft control lever since my 8N does not have one on it and yes, I do have position control. :wink:

timsch · Oct 9, 2017

I'm hoping to make this adjustment this evening, and am still unsure about the following (pasted from above):

2nd, looking at FIG FO136, the rocker lever shown is not visible to me on the tractor. It's full of oil - is it down in the oil? I think I've felt it down in there. Looking into the opening, There is a rod going vertically down into the oil. Is the rocker lever on the end of the rod?

Thanks.

JMOR · Oct 9, 2017

(quoted from post at 15:28:26 10/09/17) I'm hoping to make this adjustment this evening, and am still unsure about the following (pasted from above):

2nd, looking at FIG FO136, the rocker lever shown is not visible to me on the tractor. It's full of oil - is it down in the oil? I think I've felt it down in there. Looking into the opening, There is a rod going vertically down into the oil. Is the rocker lever on the end of the rod?

Thanks.

elow the oil. Begin lift at about 2/3 travel of lift control lever is normal for Draft control , but not for position control.

timsch · Oct 9, 2017

How far through the travel before before lift starts is normal for position control?

HFJ · Oct 9, 2017

(quoted from post at 16:35:21 10/09/17)
Begin lift at about 2/3 travel of lift control lever is normal for Draft control

does this apply to 9/2Ns as well?

timsch · Oct 10, 2017

I was trying to adjust the quadrant yesterday and found a tack weld that prevented me from doing so.

This is not a factory weld, right? If it is, then I don't understand how to make the adjustment.

JMOR · Oct 10, 2017

(quoted from post at 11:21:21 10/10/17) I was trying to adjust the quadrant yesterday and found a tack weld that prevented me from doing so.

This is not a factory weld, right? If it is, then I don't understand how to make the adjustment.

oosen those 4 bolts. They are in slotted holes. Assy slides fore & aft.

timsch · Oct 10, 2017

Well, I didn't state it, but I had loosened the 4 bolts. I thought that the tightened bolts held the plate against the quadrant and that the quadrant would rotate when the bolts were loosened.

Is that not the case? Is it a for-aft adjustment?

JMOR · Oct 10, 2017

(quoted from post at 11:45:09 10/10/17)
Well, I didn't state it, but I had loosened the 4 bolts. I thought that the tightened bolts held the plate against the quadrant and that the quadrant would rotate when the bolts were loosened.

Is that not the case? Is it a for-aft adjustment?

t is not for & does not rotate & is for fore/aft.

timsch · Oct 10, 2017

Alright, I'll try that when I get home.

Now, If anyone can help me understand what this adjustment is actually doing internally, I'd appreciate it. I'm a bit baffled.

Thanks for the help.

JMOR · Oct 10, 2017

(quoted from post at 11:54:47 10/10/17)
Alright, I'll try that when I get home.

Now, If anyone can help me understand what this adjustment is actually doing internally, I'd appreciate it. I'm a bit baffled.

Thanks for the help.

hen you operate the touch control lever it rotates the attached shaft which has an eccentric on its inside end. This eccentric moves the top end of the control arm fore/aft as you move lever up or down. Sliding the quadrant alters the center point of the eccentric & thus the end points of the top end of the control arm travel.

Caryc · Oct 10, 2017

(quoted from post at 08:54:47 10/10/17)
Alright, I'll try that when I get home.

Now, If anyone can help me understand what this adjustment is actually doing internally, I'd appreciate it. I'm a bit baffled.

Thanks for the help.

JMOR has it correct.

When I replaced my dowel pin and bent control rod with a straight one, it would only lift to a certain height which was not enough for me.

I loosened those four bolts and slid the casting probably one eight to three sixteenths of an inch to the rear. Then the lift raised up to where I wanted it.

Mark the position of the casting to the top cover so you'll know where it was before you started moving it. You can see JMOR's mark in his picture.

Caryc · Oct 10, 2017

(quoted from post at 08:54:47 10/10/17)
Alright, I'll try that when I get home.

Now, If anyone can help me understand what this adjustment is actually doing internally, I'd appreciate it. I'm a bit baffled.

Thanks for the help.

Sorry, I should have said your picture. I see that yours is already marked.

timsch · Oct 10, 2017

Thanks so much for the guidance, gents. It is most appreciated.

Hobo,NC · Oct 11, 2017

"I'm attempting to adjust the quadrant on my '49 8N. I'm doing so because I don't get any lift until the position control level is at least 2/3 of the way through the travel."

BTDT If it lifts all the way and controllable quit fudging with it.

Caryc · Oct 11, 2017

(quoted from post at 15:56:36 10/11/17)
"I'm attempting to adjust the quadrant on my '49 8N. I'm doing so because I don't get any lift until the position control level is at least 2/3 of the way through the travel."

BTDT If it lifts all the way and controllable quit fudging with it.

Mine works about the same way. But I can stop the lift at any position so I don't see any problem. As Hobo says if it works why try to fix it? You may wind up with a problem you don't have now.

timsch · Oct 12, 2017

All true, sage advice. Nonetheless, I fudged with it, and it seems no worse for the wear. The adjustment seemed pretty far out based on the FO-4 manual, so I'm glad I did it. That being said, I didn't see much of a change with the lift when using it last night.

Quadrant adjustment and position control level questions

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