What is the purpose of the lower control arm adjustment cam?
Thread Starter
Member
Joined: Aug 2016
Posts: 233
Likes: 4
From: Maryland
Year: 1996
Model: Grand Cherokee
Engine: 4.0 I6
What is the purpose of the lower control arm adjustment cam?
Looked all through the FSM to try and find what it adjusted. Found a nice picture of it, but no explanation of its purpose. Anyone know?
Thread Starter
Member
Joined: Aug 2016
Posts: 233
Likes: 4
From: Maryland
Year: 1996
Model: Grand Cherokee
Engine: 4.0 I6
Haha, well I did that. Nothing noticeable in overall geometry. As far as what I would expect judging from the mechanism, it looks like it would make small changes to whatever the analog of thrust angle is for the front axle.
Also, I just bought a fancy camber/caster gauge, so I'll try twisting and seeing what happens with that when I have a chance too.
Also, I just bought a fancy camber/caster gauge, so I'll try twisting and seeing what happens with that when I have a chance too.
Member
Joined: Sep 2016
Posts: 137
Likes: 0
Model: Cherokee
I don't think my o4 has any adjustment on it except for toe in and then you have to twist the whole axle to adjust the rake. 2004 Laredo four wheel drive, but yeah that cam is going to be a caster or camber adjustment.
Last edited by Cleman Simpson; Feb 16, 2017 at 03:52 PM.
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 741
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
It does adjust the caster angle, but no more than 1/2* at best. It's purpose is mainly to adjust the thrust angle, as in aligning the axle perpendicular to the body. At least that's what my bodyman says. My 97 ZJ had them and my 2000 WJ doesn't. I don't see any purpose at all because the uppers are not adjustable.