Mod to make it right? - axle info needed
 

Could someone please tell me the exact model / axle that is in the 2004 Rubicon and in the 2007 Rubicon? I believe that there is a Dana 44 heavy-duty front axle (30 Spline I think) in our 2007 Jeep Unlimited Rubicon. We need to see if the ball joint(s) on the TSB mentioned below will work on ours.

Backgroung info: Right off the lot our Jeep had a problem with pulling/drifting to the right. Long story short, we ended up taking a settlement from Chrysler and need to attempt a fix ourselves. Since accepting the settlement, it's become painfully clear that while it's not the most horrible driving experience - the right front tire is being worn out excessively on one side and the gas mileage is incredibly bad. Obviously this isn't a straightforward problem. :rollingeyes: I don't want to whine about the problem anymore, but focus on finding the solution. However, you can find out more about what happened by reading the thread I posted back when this all was going on: https://www.jk-forum.com/forums/show...ighlight=fruit

We believe this TSB might be the answer - but because the 2007 was a first year model, we need to verify that this TSB for an earlier model could be applied. I'd also appreciate any opinions - is the mod we need to invest in to make our Jeep drive straight? Thanks in advance.



TSB 0200604 - SPECIAL OFFSET BALL JOINT - ALLOWS ADJUSTMENT TO CASTER AND CAMBER ANGLES

Date: August 20, 2004 (supercedes 0200102 dated June 10, 2002)

Model year(s): 2001-2004

Description: This bulletin involves the replacement of one or both front upper ball joints when front end alignment specifications can not be obtained using normal alignment practices. The customer may experience a slight lead or drift to either side of the road. This condition may occur when there is no driver input to the steering system, or when the driver must maintain a constant input to the steering system in order to maintain a straight ahead direction of the vehicle.

NOTE: THIS BULLETIN WILL NOT EFFECT SITUATIONS WHERE A LEAD OR DRIFT CONDITION IS PRESENT ONLY WHEN BRAKING.

Details: The front end caster and/or camber angles on certain Jeep vehicles are fixed. For Grand Cherokee vehicles both the caster and camber angles are non-adjustable (fixed). For Wrangler and Cherokee vehicles only the camber angle is non-adjustable (fixed). The offset ball joints listed in this bulletin allow for the adjustment of these “fixed” front end alignment angles by an amount of up to 1.5 degrees. The offset ball joint should be used only as required.