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-   -   Clunk when braking (http://www.jeepgarage.org/f185/clunk-when-braking-44521.html)

dsjr2006 07-10-2012 12:11 PM

Clunk when braking
 
Hey guys I'm pretty new here, but I'm wondering if anyone has had this issue. I've done lots of searching, but haven't found anyone with exactly the same problem.

Under medium to heavy breaking there is a clunk from the front left along with a tug that seems to be the left front wheel turning slightly. I've jacked it up and inspected everything and the tie rods seem tight. I'm planning to replace the sway bar links and bushing today anyways. The lower control arm bushings look worn, but I can get them to budge so I can't tell if that's what's causing it or not.

Turning the steering wheel back and forth rapidly with the front wheels off the ground produces no unexpected results or noises so I am right to think it's the lower control arm?

Thanks

dr.lee.baugh 07-10-2012 12:20 PM

Re: Clunk when braking
 
You may also want to check your calipers to ensure the little metal tab that keeps the pads in place is still there. I have heard people report a clunk type noise when applying the brakes if that tab isn't in place.

Apart from the LCA, you could also check the UCA ball joint and bolts where it attaches to the frame for excessive play and check the condition of the bushings..

dsjr2006 07-11-2012 02:21 PM

Re: Clunk when braking
 
I check it out again last night and it seems to be the Front Lower Control Arm Bushing on the Driver side. I'm going to order one and replace it this weekend hopefully. Will update with any progress. Also going to attempt to tackle the Differential bushings this weekend too.

antsjeep 07-12-2012 08:05 AM

Re: Clunk when braking
 
don't the LCA bushings need to be pressed in?

dsjr2006 07-12-2012 10:30 AM

Re: Clunk when braking
 
Quote:

Originally Posted by antsjeep (Post 655429)
don't the LCA bushings need to be pressed in?

Yes. I chose to just replace the entire lower control arm for $125 instead of buying all the bushings and ball joint for only $10 less. I would rather just get it done since the others don't appear to have much life left either. I'm a little disappointed that this is necessary with 68k miles though.

antsjeep 07-12-2012 10:41 AM

Re: Clunk when braking
 
Quote:

Originally Posted by dsjr2006 (Post 655475)
Yes. I chose to just replace the entire lower control arm for $125 instead of buying all the bushings and ball joint for only $10 less. I would rather just get it done since the others don't appear to have much life left either. I'm a little disappointed that this is necessary with 68k miles though.

Well i'm at 53k and i have the same exact clunk as you. Especially over certain pot holes and such on the road at lower speeds. Guess ill have to inspect mine this weekend and see whats up.

I looked at "just for jeeps" and they show the LCA's priced @ $413 each!!!

http://www.justforjeeps.com/frlocoar.html


what part numbers did you order?

dsjr2006 07-12-2012 10:45 AM

Re: Clunk when braking
 
I don't have any clunk over potholes, but I had already ordered sway links and bushings so I'm replacing those too. I used a pry bar to check for play in the bushings, http://youtu.be/IRoaGz_wuEM not sure if you can see the movement in the video, but there definitely should not have been than much movement there and it was the only place I found it so I'm pretty sure that's it.

4.whoa 07-12-2012 10:59 AM

Re: Clunk when braking
 
Quote:

Originally Posted by dsjr2006 (Post 655475)
Yes. I chose to just replace the entire lower control arm for $125 instead of buying all the bushings and ball joint for only $10 less. I would rather just get it done since the others don't appear to have much life left either. I'm a little disappointed that this is necessary with 68k miles though.

thats a great deal, where did you get them? rock auto had them for about $175 each.

dsjr2006 07-12-2012 11:35 AM

Re: Clunk when braking
 
I went with the Mevotech part # MS25170 on RockAuto it was the cheapest and had the best warranty. 5 year-60k miles.

Ended up buying from PartsGeek http://www.partsgeek.com/catalog/200...ntrol_arm.html since they had free shipping and from my experience they ship faster.

antsjeep 07-12-2012 04:17 PM

Re: Clunk when braking
 
wow that's not bad at all!

antsjeep 07-24-2012 10:01 AM

Re: Clunk when braking
 
how hard is the install for the LCA's?

I am contemplating doing these myself.

dsjr2006 07-24-2012 11:21 AM

Re: Clunk when braking
 
Quote:

Originally Posted by antsjeep (Post 660699)
how hard is the install for the LCA's?

I am contemplating doing these myself.

I plan to post a write-up, but really not too bad at all. It's really just removing some bolts and it can be done without completely removing the spindle from the vehicle if you want to avoid disconnecting the axle and removing the brake rotors though neither of those is too difficult either. The main thing is that some of the bolts will be seized so an impact wrench is a great tool to have or a big breaker bar. I haven't finished changing mine yet because I got in there and realized a can't remove the lower clevis bolt with anything I have so I just got a new bolt and I'm going to just cut it out.


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