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TO 20 Rear axle gasket

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Jim NY

06-01-2003 17:03:53




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I have just had new rear axle seals put on my TO20 but have a question about what to use for the gasket between the end of the axle housing and the brake backing plate. The dealer I bought the shims from said to use them for the gasket but they are so thin I am not sure this is correct. I am also hoping to find metal shims which is what was on there when I took the axles out. I have only been able to find paper style.
Any help would be appreciated
Thanks Jim H Cooperstown, New York

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Jim NY

06-04-2003 19:33:49




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 Re: TO 20 Rear axle gasket in reply to Jim NY, 06-01-2003 17:03:53  
Thanks for all the information. I do have several metal shims that came off and were not broken. Several were broken however and those are the ones I will have to replace with paper. Just thought if I could get metal I would but since not the paper will do.
Thanks again Jim



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john(UK)

06-02-2003 12:55:19




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 Re: TO 20 Rear axle gasket in reply to Jim NY, 06-01-2003 17:03:53  
Normally there are paper gaskets either side of the brake drum back plate with steel shims on the inside between the plate and the axle housing. As they are shims they will vary from one tractor to the next , they are used to take out the end float in the half-shafts, if as you say you can only find paper gaskets, it could just be that no shims are needed on your tractor, a bit unusual but not impossible, the only other explanation is that in the inside end of the half-shaft is a round plug that butts up against the opposite half-shaft, this is were the shims come in, they adjust how much the clearance is between the two half-shaft end plugs, now if one of these plugs has been left out, that could be the reason why there are no shims in, but its so unusual for one to be left out and most people dont even know they come out anyway.

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David

06-03-2003 11:10:24




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 Re: Re: TO 20 Rear axle gasket in reply to john(UK), 06-02-2003 12:55:19  
I wondered about the shims when I have had my tractors apart. I know what the shims are for but didn't see the point of a gasket when (a) oil leakage from the axle is supposed to be stopped by the seal in the end of the axle housing and (b) anything that is there can seep between the shims anyway.

Just wondered and never quite figured out if I was missing something or not.



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john(UK)

06-03-2003 11:33:11




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 Re: Re: Re: TO 20 Rear axle gasket in reply to David, 06-03-2003 11:10:24  
Providing the shims were undamaged, there wasnt any leakage. and in a production tractor there wasnt an oil seal in the end of the axle housing, that has been added later by someone. The only seal was on the half shaft, alongside the bearing, so that gaskets stopped any oil leaking into the brake drums and onto the brake shoes, but in service the nuts securing the half shaft into the axle housing rarely got checked and once there was some movement there, wear took place in the shims causing more movement and the gasket soon wore away and caused an oil leak. Years later someone came along and made up a kit for fitting an oil seal in the end of the axle housing which stops any transmission oil getting to the brakes, the original idea was to allow some oil to lube the half-shaft bearing, later tractors had a grease nipple fitted to do this job.

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David UK

06-04-2003 02:52:03




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 Re: Re: Re: Re: TO 20 Rear axle gasket in reply to john(UK), 06-03-2003 11:33:11  
That's an interesting history. I know about the grease nipple and reckoned with my TE20 and 35 (which both have seals in axle and in bearing housing) you'd have to strip it to repack the bearing perodically with grease and that really it should have had a grease nipple there. I didn't know that there was originally no inner seal fitted. I posted a question about clutch judder on TE20 a week or two ago and most folk said it just needed the disc bedded in by slipping the clutch. Any thoughts on that as someone had told me it was a common problem on TE20 and I figured that it maybe needed a pressure plate adjustment to release evenly?

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