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#4595811 - 12/06/17 08:55 AM Removing blade adaptor hub.
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
I wanted to put a new belt on my old 21" exmark mower and to do this you have to remove the blade, slide the hub off and then remove the crankshaft protector. Takes all of three minutes to do. I don't know if the key sheared or if it's just rusted on, but I used a 2 jaw puller and all that did was bend the the adaptor hub. Opinions? I was just trying to put a new belt on it so I could sell it. This mower is old and dirty, but still works good.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4595818 - 12/06/17 09:03 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
Any ideas on how to remove it? I don't know if that's something you want to apply heat to.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4595832 - 12/06/17 09:18 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
wag123 Online   content


Registered: 06/14/11
Posts: 885
Loc: Texas
If you have access to an air compressor, an air chisel will get it off. You don't cut the blade adapter, you use a blunt chisel attachment using some force from the side and down/away from the engine, and just "vibrate" it off. Fast and easy.


Edited by wag123 (12/06/17 09:21 AM)

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#4595841 - 12/06/17 09:30 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
jeepman3071 Offline


Registered: 04/15/10
Posts: 4220
Loc: Storrs, Connecticut
Sounds like you need some heat. I'd heat up the outside of it (part that goes around the crankshaft) and also spray it with some penetrating oil like Kroil, PB Blaster, or a 50/50 mix of acetone and ATF. Then try the puller.
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#4595918 - 12/06/17 10:29 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
I think I'm going to cut off the flat flange so I can get the crankshaft protector off and get more access.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596016 - 12/06/17 11:36 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
JTK Offline


Registered: 08/14/03
Posts: 10587
Loc: Buffalo, NY
Yep, I'd try some good penetrating oil, heat or I like the air chisel idea too.

Worst case you can slit it with a cutoff wheel and pop it off.
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#4596050 - 12/06/17 12:02 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I bang on them with a hammer; of course that's not good for the crankshaft or the bearings.

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#4596222 - 12/06/17 02:59 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
I have an air chisel, the problem is that crankshaft protector only allowed me to chisel the very end where the blade attaches. So if I cut that flimsy flat part off I can get more access to hit it with the chisel. Or maybe then I can hook the puller to the shaft instead which is more solid.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596233 - 12/06/17 03:16 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: JTK

Worst case you can slit it with a cutoff wheel and pop it off.


Yep.

As I get older, I hate fighting with stuff.

Cut a slit, pop old junk one off, replace with new adapter hub.
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"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4596328 - 12/06/17 05:26 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
AZjeff Online   content


Registered: 01/14/11
Posts: 2644
Loc: PV Az
time + belt + new adapter = more than mower is worth??
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#4596352 - 12/06/17 06:02 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
Maybe. It was $1100.00 When new. I'm hoping to get $150 for it with a new belt. $75 as is.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596403 - 12/06/17 07:00 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
eljefino Offline


Registered: 06/15/03
Posts: 32640
Loc: ME
Maybe you could get one of those link-belts that you assemble in place?

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#4596525 - 12/06/17 08:31 PM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
wag123 Online   content


Registered: 06/14/11
Posts: 885
Loc: Texas
Originally Posted By: motor_oil_madman
I have an air chisel, the problem is that crankshaft protector only allowed me to chisel the very end where the blade attaches. So if I cut that flimsy flat part off I can get more access to hit it with the chisel. Or maybe then I can hook the puller to the shaft instead which is more solid.

I have done a thousand of these! Just hit the side of it with the air chisel. No heat. Don't cut the flange off, it will make the removal more difficult. I promise you that it will come off.


Edited by wag123 (12/06/17 08:32 PM)

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#4596856 - 12/07/17 08:11 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
The only part I can access is the flange and I'd rather not put the air hammer on that part.i need to take the crankshaft protector off to hit it closer to the sump. I'm afraid I'll bend it if I just hammer at the other side.


Edited by motor_oil_madman (12/07/17 08:12 AM)
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4596944 - 12/07/17 09:18 AM Re: Removing blade adaptor hub. [Re: motor_oil_madman]
wag123 Online   content


Registered: 06/14/11
Posts: 885
Loc: Texas
Originally Posted By: motor_oil_madman
The only part I can access is the flange and I'd rather not put the air hammer on that part.i need to take the crankshaft protector off to hit it closer to the sump. I'm afraid I'll bend it if I just hammer at the other side.

I know it is difficult to get to it with a crankshaft protector, but as long as you use a blunt fork-type bit in the air hammer you wont damage the blade mounting flange. You can also use a ball joint separator in the air hammer. Either way, the vibration of the air hammer will get it off of the shaft. I have done this a thousand times, trust me, it will work. Give it a try.


Edited by wag123 (12/07/17 09:21 AM)

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