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Farmall M Hydraulic Pump out put shaft seal


 
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Peter Hendrickson
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PostPosted: Sun Oct 07, 2012 4:12 pm    Post subject: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

anyone tell me how to get the coupler off that hooks to the hydraulic pump in the belly of the M so that I can get the seal out of the housing that is leaking? tried a small gear puller and the thing wont budge.
Thanks in Advance
 
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jim warehime
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PostPosted: Sun Oct 07, 2012 4:21 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

The drive hub is threaded on not pressed, try using a peice of 1/2 inch square stock or something that size and backing it off. Has worked for me might not hurt to put some heat on it first. Don't worry my first time trying to get one off I used a puller too lol. Jim.
 
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Peter Hendrickson
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PostPosted: Sun Oct 07, 2012 4:35 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

Is the one that threads on the one that comes out of the transmission with the slot in it?
Thanks

I am a moline guy, putting a clutch in for my kids

Thanks
 
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jim warehime
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PostPosted: Sun Oct 07, 2012 4:41 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

Yes both the drive coupler at the transmission housing (counter shaft) and the coupler on the belly pump are both threaded on. The main shaft which is on top is easy to swap out that seal. Jim
 
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Peter Hendrickson
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PostPosted: Sun Oct 07, 2012 4:44 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

do you remember if it is left handed thread?
 
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David G
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PostPosted: Sun Oct 07, 2012 4:51 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

Both ends are right hand thread. I put the tractor in gear when taking the transmission end off. The pump requires you to take pump apart.
 
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truckerlary
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PostPosted: Sun Oct 07, 2012 5:46 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

You don't have to take the pump apart. Just stick a rod of somekind down the oil fill hole to keep the pump from turning while you remove the coupling.
 
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iowa steve
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PostPosted: Sun Oct 07, 2012 6:46 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

i just changed mine,used a pipe wrench on transmision side and a chunk of steel and a hammer on pump side,put the punch(steel)on the slot and use the hammer till it gets lose, they were very tight but once it broke free it came right off.
 
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pete 23
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PostPosted: Sun Oct 07, 2012 8:09 pm    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

Sticking a rod down the fill will only get you a rod sticking in the reservoir. You have to take the pump out of the reservoir and put a rod in the inlet of the pump. But, why not just give that coupling a few good raps with a hammer and a brass drift. That will most of the time get them loose.
 
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charlieu
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Location: Southern MN

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PostPosted: Mon Oct 08, 2012 4:18 am    Post subject: Re: Farmall M Hydraulic Pump out put shaft seal Reply to specific post Reply with quote

Here is a picture of a tool made for removing the drive nut. With the tractor in high gear and the brakes set you can unscrew the drive nut from the tramission counter shaft. With the square key of the tool in the slot of the nut, as you put a little pull on the tool take a hammer and tap on the nut.

I also have a tool made for removing the nut from the pump, but I can't find the picture. I took an old inpact socket that I welded a piece of key stock to that fits the nut and with the air impact wrench I have been able to remove the nut from the pump without any disassembly of the pump assembly.

Hope this helps, charlie


 
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