Author Topic: Revcon slantnose suspension - cracked lower control arm  (Read 305 times)

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Offline sploke

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Revcon slantnose suspension - cracked lower control arm
« on: August 12, 2022, 11:55 PM »
Ran into a major issue today on the Revcon.  I was installing the new torsion bar adjusters.  Got them set and the ride height adjusted.  Pulled out of the driveway and *BANG* the front right side dropped about 4".  After some investigation, the hex socket in the lower control arm where the torsion bar sits, has a crack in it and it's allowing the torsion bar to spin when it gets enough weight on it.  Pulling the control arm off tomorrow to get a better look at what's going on and consider options....never seen anything like this before.

Offline Oz

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #1 on: August 14, 2022, 02:57 AM »
Damn. Definitely not your every day type of problem.

Offline Elandan2

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #2 on: August 14, 2022, 07:03 AM »
Maybe you could try Cinnabar Engineering. I believe the GMC motorhome had the same torsion bar setup.
https://www.thegmcmotorhomepeople.com/
Rick and Tracy Ellerbeck

Offline Elandan2

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #3 on: August 14, 2022, 03:39 PM »
Rick and Tracy Ellerbeck

Offline sploke

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #4 on: August 14, 2022, 11:33 PM »
No, I had already replaced the torsion keys at the back of the bars.  My problem is at the front end, where the bars socket into the lower control arms.

Offline Elandan2

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #5 on: August 15, 2022, 07:01 AM »
You could go with these. Expensive but it would cure the problem.
https://www.gmcrvparts.com/product-p/gm1-1.010.21.htm
Rick and Tracy Ellerbeck

Offline sploke

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #6 on: August 15, 2022, 09:07 AM »
You could go with these. Expensive but it would cure the problem.
https://www.gmcrvparts.com/product-p/gm1-1.010.21.htm

The later year Revcon arms are totally different from the GMC ones, they were custom Revcon items.

Offline sploke

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #7 on: August 15, 2022, 09:10 AM »
We opened up an access hole on the bottom of the arm to get at the broken part and repair it.














Offline Eyez Open

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #8 on: August 15, 2022, 12:47 PM »
Now that is going deep into recon. When that suspension fell was there secondary damages? Watching your work has put my efforts back into perspective, meaning I really don't have big issues other than a black money hole.

Offline sploke

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Re: Revcon slantnose suspension - cracked lower control arm
« Reply #9 on: August 15, 2022, 07:55 PM »

No, luckily I was only going about 5mph in reverse out of the driveway, so it snapped and fell, but wasn't going fast enough to do any other damage.