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Discussion Forum

Removal of blade carrier from gearbox

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T-Boy

07-25-2000 19:14:40




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How do I keep gear box from turning when trying to remove locknut from blade carrier under gearbox. Nut is torqued to 450 pounds. I am using a breaker bar with a 6 foot cheater. I've try to attache a pipe wrench to input shaft but wrench keeps slipping off. Please someone help.




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Mudcat49

07-25-2000 19:22:34




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 Re: removal of blade carrier from gearbox in reply to T-Boy, 07-25-2000 19:14:40  
I stick a bar through the u-joint on the drive shaft, let it turn til it comes against the mower deck. Also I have used a 1" inpact wrench on it to break the nut loose. If the input shaft has a slip clutch on it you might have to tighten up the bolts so the clutch doesn't slip, if it is a shear pin type then put a hardened bolt in place of the shear pin.



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T-Boy

07-26-2000 09:23:42




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 Re: Re: removal of blade carrier from gearbox in reply to Mudcat49, 07-25-2000 19:22:34  
Thanks Mudcat49. Took your advice stuck a crow-bar through u-joint to lock against bushog got locknut off in 10 minuits. Getting blade carrier off is another problem. I banged on carrier bar, using small maul and 10-Lb maul rotating carrier and hitting on opposite ends (won't budge). I will try with a two way puller and also hitting with maul. If that doesn't work then what.



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ltf in nc

07-26-2000 18:56:09




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 Re: Re: Re: removal of blade carrier from gearbox in reply to T-Boy, 07-26-2000 09:23:42  
weld a couple of BIG nuts to the carrier equal distance on each side of the shaft and get a Big bar and make a puller. Drill holes to match the spacing on the welded nuts and straddle the shaft with the bar. Install a couple of big nuts on matching bolts and then install the bolts with nuts through the bar and snug the bolts in the welded nuts. Now tighten the blazes out of the nuts above the bar and get the big hammer and hit the carrier. It will jump off! Leave the welded nuts as they won't hurt anything and you may need to use them again.

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Mudcat49

07-26-2000 18:50:55




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 Re: Re: Re: removal of blade carrier from gearbox in reply to T-Boy, 07-26-2000 09:23:42  
I stick a pipe or bar through the hole in the deck that you take the blade bolts off with, then I hit it like He_ _ with a sledge turning it so I hit both sides pops right off,



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Jay

07-27-2000 14:11:17




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 Re: Re: Re: Re: removal of blade carrier from gearbox in reply to Mudcat49, 07-26-2000 18:50:55  
A real funny thing hit me while reading your last post..... How do you hit something while turning the hammer? Just a dumb joke, I know what you were trying to say.



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T-Boy

07-27-2000 20:12:49




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 Re: Re: Re: Re: Re: removal of blade carrier from gearbox in reply to Jay, 07-27-2000 14:11:17  
"Success" Thanks again for everyones input and help. I used some FreeAll (penetration oil) let it sit for 12 hours, installed a small 3/8" wheel puller (two pullers on wheel puller) put some tention on puller hit top of blade carrier and it came right off. Took gearbox off, checked gearbox out still is in great shape. Now will get a 3/8" thick plate and try to repair top of carriage that gearbox sits on so I can reinstall gearbox and carrier and be in bussiness again, even though I went out and bought another bush-hog. Will use old one for spare and try to watch where I am going and not cut any more stumps with bush-hog. Thanks again to everyone for the help.

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Bayou Dave

07-26-2000 10:01:59




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 Re: Re: Re: removal of blade carrier from gearbox in reply to T-Boy, 07-26-2000 09:23:42  
Can you get any heat on it? Be careful and watch for spattering oil and grease.



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T-Boy

07-26-2000 11:59:48




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 Re: Re: Re: Re: removal of blade carrier from gearbox in reply to Bayou Dave, 07-26-2000 10:01:59  
Thanks Bayou Dave! Can't get tourch close enough to heat hub because there is a dish pan welded to blade carrier. I'm trying to salvage gearbox and other assembly so i can weld a 3/8" plate on top of gearbox original steel frame. Old steel frame is cracked and split.



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Bayou Dave

07-26-2000 18:57:12




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 Re: Re: Re: Re: Re: removal of blade carrier from gearbox in reply to T-Boy, 07-26-2000 11:59:48  
3/8 plate is good. I try to find a piece of 8 or 10in channel, and lay it in there, really gives something to weld the rest of the frame to. Good luck, Dave



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george

07-26-2000 14:39:32




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 Re: Re: Re: Re: Re: removal of blade carrier from gearbox in reply to T-Boy, 07-26-2000 11:59:48  
If your salvaging only the gear box, why not burn it out of the deck and work on splitting it on the bench?



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Bayou Dave

07-26-2000 16:00:06




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 Re: Re: Re: Re: Re: Re: removal of blade carrier from gearbox in reply to george, 07-26-2000 14:39:32  
I got one off once by turning it over and hooking a chain to the stump jumper, and hoisting the whole thing in the air about a foot, then hit the blade assembly with a sledge hammer. Jumped right off, but it goes without saying not to get under it, etc. Like George says it would be easier to work it on the bench. Good Luck



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