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post #1 of 10 (permalink) Old 11-17-2010, 05:31 PM Thread Starter
 
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Lower A-arm balljoint

The ball actually came through the bearing. This happened at around 40 mph. Luckly the arm hit the ground and slid instead of digging in. The ball ground it's way through the cup, leaving the side walls smooth. I've been lubricating the joints with the Comet spray after every ride.
The hole that is worn out the most is where the lower A-arm attaches. I had permanant Locktite, plus a pinch style lock nut on the bolt and had to use a cheater pipe to remove the nut. I know it was tight because I had gone through the pre race look over, the night before. It must have been loose, I just couldn't tell. I checked the other holes and found most were out of round. I've had my car for almost 2 years and have put it through some rough riding. I'm going to have the holes machined and bushed with stronger material to hopefully prevent this from happening again.
I believe the ball joint was just ready to retire.

Last edited by sc revolt; 11-28-2010 at 03:13 PM.
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post #2 of 10 (permalink) Old 11-17-2010, 05:38 PM Thread Starter
 
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Re: Lower A-arm balljoint

100_1830.jpg

100_1831.jpg

100_1832.jpg
Sorry, forgot to post pics.
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post #3 of 10 (permalink) Old 11-17-2010, 10:07 PM
 
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Re: Lower A-arm balljoint

wow.... that looks rough...
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post #4 of 10 (permalink) Old 11-28-2010, 03:23 PM Thread Starter
 
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Re: Lower A-arm balljoint

New info. I didn't realize until I got into the repair that the lower joint is a uni-ball type set up. I thought it was one piece and un repairable. Mike at RRP will have some in stock soon. IMO!!, every one should jack up the car and check for play in this joint. To replace the ball is fairly easy and less costly than replacing the A-arm and other parts after it comes out while hauling butt.
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post #5 of 10 (permalink) Old 11-28-2010, 10:12 PM
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Re: Lower A-arm balljoint

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Originally Posted by sc revolt View Post
New info. I didn't realize until I got into the repair that the lower joint is a uni-ball type set up. I thought it was one piece and un repairable. Mike at RRP will have some in stock soon. IMO!!, every one should jack up the car and check for play in this joint. To replace the ball is fairly easy and less costly than replacing the A-arm and other parts after it comes out while hauling butt.
Chuck is right about your front end inspections. Always check your lower control arm spherical ball joint (uni-ball) along with the uppers. The lower ball is the load carrying joint which carries the weight of the front of the machine. It gets a real workout. The ones that I will have on the shelf are the FK brand. I already have the FK upper control arm and outer tie rod ends as well as the radius rod ends.

Mike

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post #6 of 10 (permalink) Old 11-29-2010, 08:18 PM
 
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Re: Lower A-arm balljoint

I don't have my XL yet so I have no way of checking.

But...Is that an Allen bolt in that first picture?

If it is, I would ditch that & put in a grade 8, or grade 12 if metric, regular bolt & a thick, large diameter retainer plate.
A a spacer on the high miss alignment might be necessary if travel is limited by the washer.
That way if it does pull through, the washer will keep the arm connected to the upright.
It will rattle like hell, but the front end will stay together.

Inspections are also quick in the pits, if the washer is hitting the arm, you've got problems.

Just a thought...
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post #7 of 10 (permalink) Old 12-06-2011, 02:31 PM
 
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Re: Lower A-arm balljoint

New FK spherical bearings, misalignment spacers & circlips from RRP . Thanks Mike & Linda for the super fast service, delivered from USA to Australia in 3 days ! This means I get to go riding again this weekend. Bring it on !!!
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post #8 of 10 (permalink) Old 12-06-2011, 08:15 PM
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Re: Lower A-arm balljoint

If the FK spherical bearing, is anything like their rod ends, it will be bullet proof!

Mick, did the old one fail, or just get loose?



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post #9 of 10 (permalink) Old 12-06-2011, 08:33 PM
 
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Re: Lower A-arm balljoint

Hey bearfoot, long time ! I replace all the rose joints with FK's which tightened everything up nicely but I failed to do the sphericals. After the last ride I noticed some play so thought better to replace before failure.
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post #10 of 10 (permalink) Old 12-06-2011, 09:27 PM
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Re: Lower A-arm balljoint

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New FK spherical bearings, misalignment spacers & circlips from RRP . Thanks Mike & Linda for the super fast service, delivered from USA to Australia in 3 days ! This means I get to go riding again this weekend. Bring it on !!!

You're Welcome Mick! Thanks for letting us help you out. We're glad they showed up in time for you. It is nice when a plan comes together.

Mike and Linda

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