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Allis Chalmers Discussion Forum

AC B steering gearbox

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09-18-2003 18:53:41

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I had been trying to get the steering wheel off of this tractor for quite a while to replace the bushing in the jacket tube. I finally got the wheel off only to find that the steering shaft seemed to not sit centered in the jacket tube. I pulled the gearbox off and found that it had not been properly shimmed from the torque tube. My prblem is is that due to this the upper race in the box now readily walks up and out of position, causing the shaft to become very loose, and allow the bearing to just float around. Anyone have any ideas/ exepiances with this type of problem? thanks for your time.

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09-21-2003 06:00:57

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 Re: AC B steering gearbox in reply to Ferguson65, 09-18-2003 18:53:41  
I found when I rebuilt the steering system on my '40 B, the steering tube didn't have an upper bushing. The bushing was the steering wheel itself. I rebuilt the entire Gemmer box after dicovering someone had really messed up the way parts go together. I installed all new bearings and made a new upper bearing cup for the box. The cup is obsolete and the local bearing supplier wanted $711 for a replacement. I added newer lip seals and it's better than new.

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Dick L

09-19-2003 07:34:01

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 Re: AC B steering gearbox in reply to Ferguson65, 09-18-2003 18:53:41  
There should be a groove that holds a snap ring in the shaft like the one at the bottom that holds the bearing assembly in place. I have attached a drawing to show the assembly. I do not like the way they show the bearing and snap ring up by the stearing wheel but that is the way it is.

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09-19-2003 14:54:59

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 Re: Re: AC B steering gearbox in reply to Dick L, 09-19-2003 07:34:01  
Dick L, I looked at the housing and there is no provision For a snap ring. Should I try a new bearing and race to start with? Thanks.

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Dick L

09-20-2003 16:35:00

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 Re: Re: Re: AC B steering gearbox in reply to Ferguson65, 09-19-2003 14:54:59  
I guess maybe we are not on the same page. I attached a picture of the stearing box bolted to the torque tube. Back up one for a picture from the other side. No shims where it bolts to the torque tube. You have shims where the shaft comes out of the stearing box and runs up to the stearing wheel. When the three bolts are tight if the bearings bind you would add shims. If you can pull up on the shaft and you have play you would remove shims. In the drawing I placed on before, this coller with three bolts is shown up by the stearing wheel.

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09-20-2003 16:51:54

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 Re: Re: Re: Re: AC B steering gearbox in reply to Dick L, 09-20-2003 16:35:00  
Dick L
I figured out our misunderstanding thaks to your pictures. Your pictures show the ross steering box. My B has the gemmer gearbox, which uses a four bolt collar and no snap rings. Any ideas now that we have this situation figured out? Thanks

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Dick L

09-21-2003 10:30:09

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 Re: Re: Re: Re: Re: AC B steering gearbox in reply to Ferguson65, 09-20-2003 16:51:54  
I have two Gemmers out in my shed. One is apart and the other is ready to bolt on a torque tube. If I get a chanch in a few days I will take a look and maybe take a coupla pictures.

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Dick L Nuther Parts Pict

09-21-2003 16:37:06

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 Re: Re: Re: Re: Re: Re: AC B steering gearbox in reply to Dick L, 09-21-2003 10:30:09  
Same drill as the other ones. This one has taper roller bearing at both ends. Still add or remove shims to get the correct load on the bearings. I still can not figgure out your problem. You must be missing some parts.

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09-22-2003 18:56:34

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 Re: Re: Re: Re: Re: Re: Re: AC B steering gearbox in reply to Dick L Nuther Parts Pict, 09-21-2003 16:37:06  
Dick L
Thanks for the pic. It looks like I have all the parts, so I will try tinkering around with it again this weekend. Thanks for your help and i'll let you know how I make out with it.

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