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Gemmer gear on B

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Spud

01-18-2004 16:12:48




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Iím on the second rebuild in maybe 5 years of a Gemmer steering gear on a 1950 B.
(Is this part of the problem, should it have a Ross?)
During reassemble, the column does not align with the support pipe behind battery box. Pipe seems about 3/4 inch too high. Requires lots of force to put column on top of pipe. Surely means a lot of lateral force on bearings in gearbox.

Questions: 1) What is source of misalignment when column seems straight? 2) What is appropriate fix?

Options seem to be: 1) Shorten support pipe by 3/4 inch. 2) Drill out 1/2 inch mounting holes in gear housing so the gear can be tilted to fit pipe height. Variations of drill out would include eccentric shank studs or eccentric hole inserts (are they available) to support gear box in proper position.

Thoughts?

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steve

01-19-2004 18:44:02




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 Re: Gemmer gear on B in reply to Spud, 01-18-2004 16:12:48  
Spud, i have the same thing. when i bought my B and disassembled it the steering was sloppy and the steering column fit good onto the vertical pipe. after i disassembled the gear box, cleaned reassembled and adjusted the ecentric and cover to eliminate the slop, i put unit back on tractor. now the column sets 1 inch above the pipe stand. i think the gears inside the box and worn and after adjustment it "raises" the gear box angle. i egg shaped the two holes that the 1/2 inch mounting bolts go thru about 1/8 inch in the right direction to "lower" the angle of the box. let it rest east on the pipe and then the clamp will hold it down to the pipe. dont worry about the holes not fitting the bolts tight. put lockwshers on the bolts, and clamp the column at the top and all is fine. my 1942 is the Geemer and my 52 is Ross.

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Dick L

01-18-2004 16:25:40




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 Re: Gemmer gear on B in reply to Spud, 01-18-2004 16:12:48  
It sounds to me like someone has shortened the stand pipe that the throttle lever is attached to lower the stearing wheel, without thinking what it would do to the stearing box, being in a bind that is. If you like the lower stearing wheel I would drill out the mounting holes so that it is not in a bind.

I might do that to the B I mow yard with. I was going to raise the seat because after an hour I get tired having my hands so high.

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chalmersbob

01-18-2004 19:04:45




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 Re: Re: Gemmer gear on B in reply to Dick L, 01-18-2004 16:25:40  
MY PARTS BOOK STATES THE MODEL B SERIAL # 46120 AND UP USE A ROSS GEAR. YOUR 50 B SHOULD HAVE A SERIAL # BETWEEN 102392 AND 114526. HOPE THIS HELPS. LOL BOB



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Spud

01-19-2004 07:59:12




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 Re: Re: Re: Gemmer gear on B in reply to chalmersbob, 01-18-2004 19:04:45  

# wise you're right. It's a B 110xxx somthing.
I'm not a bit surprised the original gear box was replaced once or more. It came with spare skeleton of another Gemmer box. So are Ross and Gemmer slightly different?



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Dick L

01-19-2004 11:25:24




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 Re: Re: Re: Re: Gemmer gear on B in reply to Spud, 01-19-2004 07:59:12  
Shouldn't matter wheather the stearing box came off a newer B or an older B the tractors are the same where they bolt in place. You can take a 1938 torque tube off a crank start and put on a 1950 torque tube for electric start and every thing bolts right up.

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ed

01-23-2004 17:48:48




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 Re: Re: Re: Re: Re: Gemmer gear on B in reply to Dick L, 01-19-2004 11:25:24  
Torque tubes do the same thing but an old 38 and a new are different. As the tractor was changed implements that mount to it had to have there own bolt holes to mount to. I have a 42 and a 48 and in thoes six years I have gained 4 new cast in bolt holes. Go figue maybe there could be a different sterring box and or a change that would cause trouble.



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ed

01-23-2004 17:47:05




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 Re: Re: Re: Re: Re: Gemmer gear on B in reply to Dick L, 01-19-2004 11:25:24  
Torque tubes do the same thing but an old 38 and a new are different in that as the tractor was changed implements that mount to it had to have there own bolt holes to mount to. I have a 42 and a 48 and in thoes six years I have gained 4 new castinf bolt holes. Go figue maybe there could be a different sterring box and or a change that would cause trouble.



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Spud

01-19-2004 13:14:57




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 Re: Re: Re: Re: Re: Gemmer gear on B in reply to Dick L, 01-19-2004 11:25:24  
Pic looks real familiar. Thanks. The gear box fits to the torque tube fine. The splines on the steering arm may be different and probably need to go with the box. I'm in the process of making a new column and thottle support pipe. May be unique to this collection of parts that's making up my B.



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