front axle problems?
JK Enthusiast
Joined: Sep 2011
Posts: 144
Likes: 0
From: American Canyon, CA
The alloy usa ball joints don't clear with rvc axles. The top of the lower ball joint sit to high hitting the boot. I heard its the same problem with dynatrac, I heard of people gringing on them to fit. As far as I know the synergy ball joints clear with rvc's with no modifications. These's a whole thread on it on jko forum. Your axle will move slightly when you turn especially the longer one. I read that when installed with the usa balljoints the boot would touch the lower balljoint, the clearance you saw was probably due to the wear
Last edited by egeli; Jun 24, 2013 at 12:45 PM.
JK Enthusiast
Joined: Dec 2012
Posts: 166
Likes: 0
From: Bakersfield, Ca.
So I have a rubi 44 front axle with rcv shafts. Both RCV boots are getting tore up drivers one is chewed 360 degrees around and the other has a hole in it. I replaced the one with a hole today and left the other one because its still sealed. I am running 39 in Krawlers with only upper gussets and alloy ball joints. Could the C be flexing enough to cause it to hit the RCV boots even with though they aren't Dynatracs? Or maybe the BJ's not be seated all the way on the bottom set? There is a Gap between the BJ and the RCV boot and they look seated well. I was told they were replaced fairly recently before I bought the jeep though and while I drove it from North Carolina to Alabama I havent put significant mileage on it.
On a side note, when I pulled the RCV shafts today I had dirt in my axle tubes and there was no outer seal at all. Is this normal. thoughts and ideas?
On a side note, when I pulled the RCV shafts today I had dirt in my axle tubes and there was no outer seal at all. Is this normal. thoughts and ideas?
I hope you resolve your issue.
Last edited by Heholua; Jun 25, 2013 at 01:54 PM.
Thread Starter
JK Freak
Joined: Oct 2011
Posts: 580
Likes: 5
From: mobile,al
I have lower gussets ordered and it already has a RSE bombshell kit in it. It's been wheeled hard and held up fine... But I feared those ball joints were up a little far. Good news is I have synergy a still that never got installed on my old rig. The weird thing is the alloys actually have clearance, albeit not enough for when those Cs flex I guess.
JK Freak
Joined: Jan 2009
Posts: 722
Likes: 0
From: Carlsbad, CA
Thread Starter
JK Freak
Joined: Oct 2011
Posts: 580
Likes: 5
From: mobile,al
Yeah that boot wasn't seated all the way at the time. I posted it to show that it did appear to not be rubbing the ball joint on level ground. It's seated all the way now but apparently ill be pulling it to put in the synergys now....