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9N/2N axel king pin bushing support wear damage

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Author 
Rob

05-02-2003 06:29:35




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Indications of the problem are that when underway the steering wheel can suddenly jerk violently (hard on thumbs) and a clunking noise and ‘feel’ is noticed in the steering. Inspection of the axel assembly and support assembly will reveal that the bushing does not stay in place. Disassemble and you will see that the bushing will be worn paper thin or completely away on one end while the other end is pristine. The axel/king pin has been gouged and the axel is wallowed out. The axel may have cracks in the web near the center. The support assembly may have spread and also cracked at several locations down inside of the assembly. The pin and support assembly are damaged because the end of pin is not properly supported (the pin appears too short). The radius rods and entire steering assembly will have been banged around some.
It appears these problems will be found in the earlier models and can be corrected using spacers found in the later models. This conclusion is based on the information in the “Ford Tractor Assembly Manual and Service Parts Catalog, Models 9N-2N-8N, 1939-1952” and the “Ford Tractor Master Parts Catalog, Models 9N, 2N, 8N, and NAA, 1939 thru 1953”.
The “Service Parts Catalog” show the same axel and support assembly used on 1939/52 models. The “Master Parts Catalog” shows that the axel assembly on the 39-47 (without attaching holes for radius rods) and the 48-52 N tractors has been replaced by the axel assembly used on the 39-53 models. It shows spacers used on the 48-53 models so if you have an axel assembly with radius rod attaching holes you have an axel assembly used with spacers in the 48-53 models. The “Master Parts Catalog” does not give a number for a 39-42 support assembly. The catalog does show a support assembly for 2N, 2NAN 43-44 and another for 2N, 2NAN after 167, 488, 8N, 8NAN 43-53 models so if you have the later 43-53 support assembly you have a support assembly used with spacers in the 48-53 models.
It seems clear that a tractor that has an axel assembly with attaching holes for radius rods and a support assembly used from 2N, 2NAN after 167, 488 then it can be fitted with the spacers like those found in the 48-53 models. The spacers are not available from Ford but I found properly sized machinery bushings at the spring and axel shop. Immediate benefits are that the tractor is neither clunky nor does the steering wheel try to rip off your thumbs. Additionally you don’t have that stuff banging away up there every other time you hit a bump.
If you have an N with an axel assembly without attaching holes for the radius rods or a 43-44 model then you might wonder if you can use spacers. It might depend on whether you have a Pin (front axel)-use with 2N 3029-A-with 2 piece welded flange or a Pin (front axel)-use only with 2N 3029-B – with integral cast flange but I kind of doubt it.

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Radiator doesn't fit. Axel hits outlet.

05-05-2003 13:20:20




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 Re: 9N/2N axel king pin bushing support wear damage in reply to Rob, 05-02-2003 06:29:35  
I'd forgoten the leaking radiator caused me to begin looking at this problem in the first place. The new radiator didn't fit. I discovered the radiator support bracket that is attached across the front of the support assy had a big bow in it that moved the radiator support points on the end of the bracket to the rear of the tractor. That put the radiator back enough that the axel interfered with the discharge. Also, the new radiator, like the old radiator, wasn't sitting up high enough to fit the hood properly.
I figure that the axel banging against the radiator outlet had messed up the original radiator so badly that I had to replace it. Damn shame, it was the original too. Someone wants an original bad enough to recore it it's available. It ruined the radiator by knocking all the tubes loose there near the discharge.
Say it again: Free-floating axel is a bad idea....

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