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early 8n

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ppm

05-06-2008 11:57:16

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At the end of last season, I rebuilt the steering box on my 8n. I aligned front end the best I could using directions from the F0-4 manual. I am still having steering difficultly. It is hard than I believe it should be. ( I have another that steers much easier) Today I took it out of the shed and when I took it up the drive. The front wheels are shaking me off the tractor until I slow down. Is it poor alignment, drag link ends, spindles? Input would be really appreciated. Thanks in advance.

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lonestarjeff

05-06-2008 18:40:57

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Re: early 8n in reply to ppm, 05-06-2008 11:57:16

ppm....have you tried rotating the right-side sector housing ccw one or two "notches"?

My right wheel was a bit loosey goosey, but I adjusted it a little too far cw on the right housing which made it bind some.....backed it off one notch ccw & it's fine now.

If you can't find a happy medium between binding & too loose, the sectors may need replacing.

Jeff

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Paul in MN

05-06-2008 15:58:49

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Re: early 8n in reply to ppm, 05-06-2008 11:57:16

One of the most overlooked problems with hard steering is the thrust bearing at the bottom of the spindle housing. This bearing is like 2 flat washers with about 2 dozen balls riding between these hardened grooved washers. Often the balls are missing or have been ground flat so that they can't roll. The easy diagnosis for thrust bearing destruction is when you see more than 1/8" of space between the short steering arm and the top of the spindle housing. The arm is usually fitted gently tight to the top of the spindle housing when the thrust bearing is good. If you have excess space here, it means you should remove the short steering arm and drop the spindle out the bottom of spindle housing. Sometimes the bearing is so "mashed" that it looks to be part of the housing. You might have to remove that side of the front axle and put it in a vise up-side-down and chisel the old bearing out. They can be pretty tough.

I have found this problem to be the most common cause of hard steering.

Paul in MN

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John Smith8N

05-06-2008 20:03:25

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Re: early 8n in reply to Paul in MN, 05-06-2008 15:58:49

Bingo. You are 100% correct. Good advice.

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soundguy

05-06-2008 12:44:07

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Re: early 8n in reply to ppm, 05-06-2008 11:57:16

Could be lots of things. What did or didn't you address? I personally wouldn't go to the time or expense of rebuilding a steering box, and not lay my hands on the other important steering members.. like checking the tie rod and drag link ends, checking the spindle bushings, the kingpin, the wheel bearings.. etc.

Could be as simple as toe-in.. could be worn spindle bushings.. bad wheel bearings.. as for steering hard.. are your tires splayed out? did you replace the thrust bearings in the box and reset preload ont he wormshaft correctly using shims.. did you take the sector backlash slack out, but not too far using the side covers?

Soundguy

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Roger in Iowa

05-06-2008 12:42:34

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Re: early 8n in reply to ppm, 05-06-2008 11:57:16

What version of the steering box do you have? Does it have the adjusting screws? (one version doesn't)

Could be put together wrong, adjusted wrong, worn parts,??

The shimmying of the front wheels is usually due to looseness, from wear or poor adjustment. Is there much free play when turning the steering wheel until the front wheels actually start to turn?

What tires do you have on the front?

Roger in Iowa

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