electric clutch

[upstate yank 219]

well guys ;i am in need of some information as to how to take the electric clutch off from this older tractor ;again it is a Tecumseh model 1100 numbers @12K-802311378 i was told it is a 1976 model ;i am trying to salvage some parts ;the rest will end up at the scrap yard ;it does have some good news parts but rusted from being in the elements ;but anyways i would like to save the clutch and i have tried everything ;but it will not budge ;even with a bolt  and a tap ;the clutch is rusted on the shaft which doesn't help it has been soaking in oil for a few days but it still will not move ;i really do not want to use heat as the bearings and seals ;so any help would be greatly appreciated ;

[richmondred01 2,239]

Remove the mounting bolt from the crankshaft 

the inside of the clutch is threaded. I can’t recall if it’s 5/8 or 3/4.

thread a bolt into the clutch that should pull the clutch. 

[pfrederi 17,894]

Over the years they changed the size of the bolt needed to pull the clutch off the shaft  5/8-11 or 1"-8

 

[richmondred01 2,239]

Yes. I couldn’t remember.

I bought a 1”-8 at Fastenal. 

[oliver2-44 9,875]

It would be great if you would offer that tractor carcass to someone here free after you've gotten what you want. 

Keep it out of the scrap yard, and help others save a horse! 

[daveoman1966 3,762]

It need s a 5/8 bolt to pull off.  Here is the same pto:  

[ztnoo 2,298]

The bolt actually pushes the clutch off the end on the crankshaft.

[daveoman1966 3,762]

Don't ever us a 3-jaw or any type of puller on these electric PTO cluthces.   You WILL ruin it.  The ONLY acceptable and safe way to remove the E-PTO clutch is with the 5.8 bolt as showin in pic.  Thread the bolt into the bore of the E-PTO and the bolt bottoms out on the enging crankshaft....forcing the E-PTO off the end.    

[upstate yank 219]

5 hours ago, oliver2-44 said:

It would be great if you would offer that tractor carcass to someone here free after you've gotten what you want. 

Keep it out of the scrap yard, and help others save a horse! 

i did offer it to another member but he declined  as the items he wanted were rusted ,now sitting in the elements during years now wouldn't most parts get rusted but a little elbow grease can change that as the parts i have taken off i have cleaned up and they work great even the hitch assembly that fits on the rear axle where you can add a plow or even a tiller ;really being an older tractor one can not expect brand new  ;the thing is i will keep it as you mentioned why go to the junk yard and get screwed as they tip the scales ;i was just hoping once i posted this older tractor others might jump in and need items as there are so many left which are good other than being some what rusted but heck we all know that can be cleaned ; i checked the starter today and it works great plus the hood is decent plus the complete lift assembly ;the steering shaft plus the gears are good the only thing is the steering wheel is twisted 'i have a B-80 so if in the future if  i need any items i have them ;but my main concern is trying to get the clutch off ;as with all of the members here we always try our hardest to save a horse and i am one of them as i grew up on this fine old things and at this time i have 7 in the garage ;no worries there it will be saved ;thanks for your thoughts '

[upstate yank 219]

5 hours ago, daveoman1966 said:

It need s a 5/8 bolt to pull off.  Here is the same pto:  

 

 

[upstate yank 219]

thanks for the information as far as the bolt size but odd that it is i did get a 5/8 inch bolt and it would not fit inside of the threads ;i really don't know why less someone has messed with the clutch but i did try a 7/16 and it screwed in but only a little ways ;though the hardware stores here do not have the complete threaded bolt as in your picture  ;as most only have about a 2 inch bolt that is threaded 

[upstate yank 219]

1 hour ago, daveoman1966 said:

Don't ever us a 3-jaw or any type of puller on these electric PTO cluthces.   You WILL ruin it.  The ONLY acceptable and safe way to remove the E-PTO clutch is with the 5.8 bolt as shown in the  pic.  Thread the bolt into the bore of the E-PTO and the bolt bottoms out on the enging crankshaft....forcing the E-PTO off the end.    

thanks for the reply and yes i understand to never use a 3-jaw as it just twist and bend the pulleys;darn i have tried the 5/8 bolt that most say is needed but it will not fit as it is to large so i tried a 7/16 and it went in ;i felt it hit the crank shaft and i continued  to turn the ratchet till it got hard to turn so i stopped thinking the bolt would busted inside so i removed it;really i am not sure what the previous owner has done ;again thank you 

[richmondred01 2,239]

Use a grade 8 bolt. Pb blaster, heat and an impact gun. 

 

[daveoman1966 3,762]

Presuming you have the outer RETAINING bolt completele out, you should be able to see the threads of the inner bore of the E-PTO as in my pic above.  It is likely they are rusty, but you should still be able to see them.  If rusty, twist a round spiral wire brush in the hole to clear some of the rust, at least.   

[pfrederi 17,894]

Can you take a picture looking into the center of the PTO so we can try to figure a way to get this done?

[upstate yank 219]

22 hours ago, richmondred01 said:

Remove the mounting bolt from the crankshaft 

the inside of the clutch is threaded. I can’t recall if it’s 5/8 or 3/4.

thread a bolt into the clutch that should pull the clutch. 

thanks for the information but i did try the 5/8 bolt but it was to large for the hole so i used a 7/16 it went though alright but once it bottom out ;the clutch didn't move as i sprayed it a few days ago with oil thinking that would help so now it seems a little heat might work but not to ruin the bearings or seals ;in time i will get it ;i know it works as i used a set of jumpers on the starter and it spun over plus the clutch turn 'again thanks '

[upstate yank 219]

10 hours ago, daveoman1966 said:

Presuming you have the outer RETAINING bolt completele out, you should be able to see the threads of the inner bore of the E-PTO as in my pic above.  It is likely they are rusty, but you should still be able to see them.  If rusty, twist a round spiral wire brush in the hole to clear some of the rust, at least.   

 

10 hours ago, daveoman1966 said:

Presuming you have the outer RETAINING bolt completele out, you should be able to see the threads of the inner bore of the E-PTO as in my pic above.  It is likely they are rusty, but you should still be able to see them.  If rusty, twist a round spiral wire brush in the hole to clear some of the rust, at least.   

 

2 hours ago, pfrederi said:

Can you take a picture looking into the center of the PTO so we can try to figure a way to get this done?

sure i can try to get a picture but as always here rain and more rain ;the thing is the bolt i am using isn't threaded all of the way as the one in the picture 'the hardware stores don't have any bolts like that ;the one i ended up using was a 7/16 but only threaded maybe 2-3 inches long 'so that might be the issue here as the threaded bolt isn't long enough but i can feel it hit the crank and i am concerned if i crank the bolt to tight it might snap off inside ;but again i will try the wire brush and rust buster ;i will keep everyone up to date as how it goes ;

[upstate yank 219]

14 hours ago, richmondred01 said:

Use a grade 8 bolt. Pb blaster, heat and an impact gun. 

 

thanks i will get that a try ; 

[pfrederi 17,894]

7/16 sounds like the tread size for the hole in the end of the crank shaft.  That is not what you are looking for. When you removed bolt holding it to the crank did the thick washer behind it come off??

[upstate yank 219]

2 minutes ago, pfrederi said:

7/16 sounds like the tread size for the hole in the end of the crank shaft.  That is not what you are looking for. When you removed bolt holding it to the crank did the thick washer behind it come off??

yes the thick washer came off as well 'it seems i screwed up by using the 7/16 .so now i will try the 5/8 thought it could be that the guy in the hardware store sold me the wrong bolt as it might not be the standard type ;if i could find the correct bolt as pictured that might help but each store i went to didn't have a bolt like that threaded all of the way ;so now i guess back to square one; thanks again 

[pfrederi 17,894]

The 7/16 NF bolt is going into the end of the crankshaft and is not going to move anything.  You do not heed a fully treaded 5/8 NC.  partial thread will get it moving.  Pic 2 is a 5/8 NC 3-1/2 inch and it gets them off.  Nothing special about the bolt.

[ztnoo 2,298]

Buy a longer 5/8 x 11 bolt.

It will have more threading than the shorter one you are using now.

 

Additional option:

If you have a set of taps, see if you can carefully by hand begin for a 5/8 x 11 tap to bite in the threading to begin to clean up the threads enough for bolt to bite and go in farther to touch the end of the crank.

I had trouble with mine initially and had to partially chase the threads to gain purchase on the internal threading.

If you are finally able to get the clutch off, chase the threads from the opposite side as well to really clean things up.

Edited June 23, 2019 by ztnoo

[upstate yank 219]

23 minutes ago, ztnoo said:

Buy a longer 5/8 x 11 bolt.

It will have more threading than the shorter one you are using now.

 

Additional option:

If you have a set of taps, see if you can carefully by hand begin for a 5/8 x 11 tap to bite in the threading to begin to clean up the threads enough for bolt to bite and go in farther to touch the end of the crank.

I had trouble with mine initially and had to partially chase the threads to gain purchase on the internal threading.

If you are finally able to get the clutch off, chase the threads from the opposite side as well to really clean things up.

thanks so much for the advise as i did try a tap but again i used the wrong one as it was the 7/16 but now reading your reply and bolt size i should beable to get it off and yes using a 5/8 tap to get it started 

[upstate yank 219]

45 minutes ago, pfrederi said:

The 7/16 NF bolt is going into the end of the crankshaft and is not going to move anything.  You do not heed a fully treaded 5/8 NC.  partial thread will get it moving.  Pic 2 is a 5/8 NC 3-1/2 inch and it gets them off.  Nothing special about the bolt.

 

46 minutes ago, pfrederi said:

The 7/16 NF bolt is going into the end of the crankshaft and is not going to move anything.  You do not heed a fully treaded 5/8 NC.  partial thread will get it moving.  Pic 2 is a 5/8 NC 3-1/2 inch and it gets them off.  Nothing special about the bolt.

thanks again and now i understand how to get the clutch off ;now if it would only stop raining ;i sure will let everyone know how it turns out 'again thanks to everyone for there help