How to take wheel apart C with eccentric clamps.

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 1948 C 8" rim with the eccentric clamps (9.5 x 24 tires). The wheel is rotten thru at the valve stem. I can see the tube. A local guy fixes rims all the time. Bring it over he said.
OK, but I wanted to take the center disk out, can't weld on it assembled.

I need help. I assumed this would be relativly easy. 
I thought I just had loosen the nuts on back side (that went ok) rotate the eccentric bolts (2) 180 degrees to take  the pressure off. They are really stuck, will not rotate.
I oxy torched heated the bolts, clamp and local area of wheel disk. Didn't want to melt the rubber,so maybe I didn't get it as hot as I normally would.
I am using a 18" breaker, and I am not a lightweight. Also tried a 500ft-lbs inpact gun.
So then I attack from the other side, hammering on the end of the backed off nuts.
None of them budge, the simple bolts or the eccentric bolts. 2lb hammer!
I had been putting penetrating oil on these since last fall.
I see that new clamps and bolts (including the eccentric) are available,
so I am ok if I break something (as long as it is not the wheel disk!).

These rims are originals. The rolled (convex) bead that the clamps nestle on are
full cirmumference of the rim, except the valve stem area is flat locally.
Are the replacement rims like this?  The pictures on the net "lack contrast".
Like white on rice, I can't see.  But I suspect the bead may only be raised locally at each quadrant for the clamps. 

I have limited time, doing this for the family, then have to fly away.

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BrianC Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 16 Jun 2011 Location: New York Points: 1619	Post Options Post Reply Quote BrianC Report Post Thanks(0) Quote Reply Topic: How to take wheel apart C with eccentric clamps. Posted: 28 Jun 2012 at 8:15pm
	1948 C 8" rim with the eccentric clamps (9.5 x 24 tires). The wheel is rotten thru at the valve stem. I can see the tube. A local guy fixes rims all the time. Bring it over he said. OK, but I wanted to take the center disk out, can't weld on it assembled. I need help. I assumed this would be relativly easy. I thought I just had loosen the nuts on back side (that went ok) rotate the eccentric bolts (2) 180 degrees to take the pressure off. They are really stuck, will not rotate. I oxy torched heated the bolts, clamp and local area of wheel disk. Didn't want to melt the rubber,so maybe I didn't get it as hot as I normally would. I am using a 18" breaker, and I am not a lightweight. Also tried a 500ft-lbs inpact gun. So then I attack from the other side, hammering on the end of the backed off nuts. None of them budge, the simple bolts or the eccentric bolts. 2lb hammer! I had been putting penetrating oil on these since last fall. I see that new clamps and bolts (including the eccentric) are available, so I am ok if I break something (as long as it is not the wheel disk!). These rims are originals. The rolled (convex) bead that the clamps nestle on are full cirmumference of the rim, except the valve stem area is flat locally. Are the replacement rims like this? The pictures on the net "lack contrast". Like white on rice, I can't see. But I suspect the bead may only be raised locally at each quadrant for the clamps. I have limited time, doing this for the family, then have to fly away.

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Chalmersbob Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Pennsylvania Points: 2122	Post Options Post Reply Quote Chalmersbob Report Post Thanks(0) Quote Reply Posted: 28 Jun 2012 at 9:38pm
	I have taken many of these apart and never had a problem. Usually you remove the nut and turn the ecentric. The new replacement rims that I have seen have 4 bumps, not the continous bead as you have. The early rims were 4 bumps and later the were full circumference type like youe have. Did you loosen the nuts on all for bolts? I guess just do more of what you are doing, heat, Blaster and working the bolts. Bob

BrianC Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 16 Jun 2011 Location: New York Points: 1619	Post Options Post Reply Quote BrianC Report Post Thanks(0) Quote Reply Posted: 29 Jun 2012 at 5:23am
	Thanks. I will get a bigger wrench. I bet the later full circumference rims are stiffer than the 4 bumps types.