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#1
03-26-2019, 02:52 PM
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Small pin removal frustrations
well tractor is almost totally apart, but those dam small pins (spiral and roll) just wont move. I have a (cheap) pin punch set and PB Blaster penetrant. Also, have not used my ox-acetylene torch yet but that's coming!
Trying to pull the driveshaft coupler at the transmission, the clutch-brake pedal cross over shaft pin, and the front axle pin. suggestions welcome but it looks like may be time for some real heat... if I heat the end of that driveshaft the coupler is loose so I dont think it will overheat into the transmission input shaft, and that needs a new seal anyway... if heating doesnt work and the pins get mangled then what? they are too hard to drill out supposedly. 
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Model 100 Dec 2020 - Running condition, has snow plow! Model 123 Nov 2020 Hydro needs much work, or resto, building front end loader for this one Model 100 Feb 2019 apart for total frame-off / sandblast etc resto Model 70 Sep 2020 needs total resto and an engine, or for parts Model 70/100 Mar 2021 buried in rust, frozen engine, got free for parts. two spare hydro rears "in for a penny, in for a pound!" 
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#2
03-26-2019, 02:59 PM
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The pins look flush to the surface. Support and a 3LB hammer
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  '76 1200 Dad bought '75 1200 "Twinsie" per my daughter
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#3
03-26-2019, 03:09 PM
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how do I support it? wood? and does torch heat ever help?
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Model 100 Dec 2020 - Running condition, has snow plow! Model 123 Nov 2020 Hydro needs much work, or resto, building front end loader for this one Model 100 Feb 2019 apart for total frame-off / sandblast etc resto Model 70 Sep 2020 needs total resto and an engine, or for parts Model 70/100 Mar 2021 buried in rust, frozen engine, got free for parts. two spare hydro rears "in for a penny, in for a pound!"
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#5
03-26-2019, 04:22 PM
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Cut a wood block for support? As to the air hammer, I HAD one but IIRC it was a cheapo HF one and I may have tossed it for being weak. may look on ebay for a used snap-on or IR one and do it right.
As to HF, I was an HF snob but the pic of my engine hanging over the cub includes, a HF chainfall, HF alum jack, HF impact gun (which I am VERY impressed with that one!), and who knows what else... I guess no more chit-talkin HF for me!
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Model 100 Dec 2020 - Running condition, has snow plow! Model 123 Nov 2020 Hydro needs much work, or resto, building front end loader for this one Model 100 Feb 2019 apart for total frame-off / sandblast etc resto Model 70 Sep 2020 needs total resto and an engine, or for parts Model 70/100 Mar 2021 buried in rust, frozen engine, got free for parts. two spare hydro rears "in for a penny, in for a pound!"
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#6
03-26-2019, 05:08 PM
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Do not use heat on the coupling/shaft!!
You will ruin the heat treatment. Support it with a jack or piece of metal on concrete and whack the pin punch with a B.F.hammer, sometimes a person can hold the pin punch with a pair of vice grips if they are afraid of hitting their hand/fingers.  If the coiled pin is mushroomed, hit it from the other end or grind it flush. You will not get it out if it has a mushroomed head. As mentioned an air hammer works well, but still solidly support the shaft, as it makes the pin come out easier.
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#7
03-26-2019, 06:47 PM
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A couple years ago I had a hell of a time getting the pin out of the drive shaft of one of the 102s. Ended up using one of those punches with the ball end (no clue what they are called) with a cheap Harbor Freight are chisel. Used a coupling nut that the punch would fit into and a bolt with the head cut off as kind of a holder to keep the punch and chisel in contact. Still took a hell of a time to get it out.
Once it was out I figured out why it was such a bear to remove, this may not be a very good picture but you should be able to see the ridge it was hanging on...
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