Iver Johnson crankarm removal


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John D. Williams

Look Ma, No Hands!
Dec 5, 2010
68
27
#1
This nut is frozen, even after penetrating oil soak. I guess it is normal thread not reversed? I've tried tapping it with hammer and screwdriver so far. Any suggestions? It's a pre-1910 Iver Johnson.
P3310315.JPG
 

Aussie

Finally riding a big boys bike
Apr 19, 2017
190
322
50
So Cal
#3
If you have a torch I would suggest heating it up


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redline1968

Riding a '38 Autocycle Deluxe
Oct 16, 2008
4,787
3,165
Seattle, United States
#4
I made a slotted tool. That’s the only way to get it off both by notches turning at the same time. Pounding on one is not enough. A Large handle for torque makes smooth work out of it, Yes It’s reversed threaded.
 

carlitos60

Cruisin' on my Bluebird
Jan 1, 2013
2,402
1,024
Kissimmee, FL United States
#6
sorry, have to correct to avoid damage. When the nut is on the drive side, it is regular right hand threads, not left handed. Unscrew it counter clock wise.
Sorry,,,IF You Tap It,,,,Do It on Both Sides; 1 and 1 Towards the Left Both!!!
Good Luck!
 

Duchess

Finally riding a big boys bike
Feb 14, 2014
476
821
Beverly, MA
#10
I made a tool out of a heavy duty paint scraper with the right thickness to the blade. I ground the chisel end flat and a notch out of the center of the blade to clear the crank bolt. Though the handle was a nice one, for leverage, I used a pair of vise grips on the blade close to the nut.

If you can find it, the best penetrating oil I've found is Zep 45 or Zep PLS. The latter also works MUCH better than WD40 as a protectant. Not cheap, but they're big cans and every last drop comes out of them, so they last a long time. I used it in in a previous life as a marine mechanic and if soaking a couple of applications didn't free it, you were going to need a torch or angle grinder. However, that's more a general knowledge thing as that doesn't look too corroded to me.
 

John D. Williams

Look Ma, No Hands!
Dec 5, 2010
68
27
#11
Well, thank you for all the replies! As I mentioned, I am getting this bike back on the road for a friend. Since I am not experienced, nor have the needed equipment, for making a tool for this, or for torching it, would anyone be willing to let me "rent" theirs, i.e. I pay postage from and back to you, and a user fee? You would have my address so you would "know where to find me" haha. It's the only solution I can think of for this. I guess PM me if interested.
 

John D. Williams

Look Ma, No Hands!
Dec 5, 2010
68
27
#12
Well, thank you for all the replies! As I mentioned, I am getting this bike back on the road for a friend. Since I am not experienced, nor have the needed equipment, for making a tool for this, or for torching it, would anyone be willing to let me "rent" theirs, i.e. I pay postage from and back to you, and a user fee? You would have my address so you would "know where to find me" haha. It's the only solution I can think of for this. I guess PM me if interested.
As it turns out, I am able to loosen the other side to get some motor or crankcase oil into the BB, and this should be enough to get the bike going, to loosen up the existing grease. The crankarm was turning well anyway.
 

DanielKj

On Training Wheels
Apr 13, 2018
4
7
48
Santa Rosa
#13
Once you get the outside nut off, mine is not on the driver side, what do you do next? I cant seem to get the crank arm off.
 

DanielKj

On Training Wheels
Apr 13, 2018
4
7
48
Santa Rosa
#14
Once you get the outside nut off, mine is not on the driver side, what do you do next? I cant seem to get the crank arm off.
does any one have a video?
 

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