Cross Caster Left 2.8 Right 4.2 Vehicle Pulls Left HELP

[rreid]

Your dealer is not doing you any favors adjusting in compensations. Take the alignment specs below to an independent shop that understands live axle setups and compare your vehicle to the “Nominal” specs in the image below. Notice they are even side to side. They may not be able to get it perfect but the closer you are to those nominal specs the better. Throwing money at adjustable arms at this point is pointless until you know for sure you don’t have damage or issues preventing your rig from being set properly to stock specifications. There is plenty adjustability in the stock suspension (assuming you don’t have a lift or damage) to hit these targets.

 

[rreid]

So this chart answers the question Nominal target should be 2degrees left / right

 

[Dokatd]

So this chart answers the question Nominal target should be 2degrees left / right

Again, if the left is 2° then the right will automatically be 2° give or take a fraction of a degree. The left and right caster are fixed to each other and cannot be adjusted independently of each other. I'm not saying they have to set them the same, I'm saying they are impossible to change independently. So if you see more than a few 10ths of a degree difference between each side after they align it then your front axle is toast.

On independent front suspension cars you can indeed adjust caster separately from each other.

 

[Frankponte]

A vehicle will "Pull" to the side with the least Positive Caster which seems to explain your concern.

I seriously doubt the right Caster measurement at 4.2˚. The only way that's going to happen is if there's some steering knuckle "play" or "slop" or the wheel alignment sensor on the right side was bumped or is out of calibration. Regrdless i'd have your tech do a steering parts check and have him focus on the steering knuckles for wear or broken parts.

Caster can be adjusted but due to having a solid axle it's not likely to have that much variation side to side even though there are left and right adjusters. Maxed out on both sides you'd be lucky to get ~3.0˚ Caster measurement on either side.

 

[C-Mack]

Great information thank you !!

I believe these specs are more current as it shows a bit more toe-in on the front axle which is fine. As others have suggested something went wrong with your last alignment. Get them to set your vehicle to the nominal specs below as you either have damage, or which is more likely, it was alignment operator error.

I worry they are trying to account for road crown and have messed things up. Not all roads are crowned the exact same amount to the point you could reliable set a vehicle up perfectly for it so it’s better to have the settings even both sides. I bet dollars to donuts whoever did the alignment has cranked your caster adjusting bolts completely opposite of each other putting the thrust angle of the front axle way out hence your pull. I’d be surprised if your steering wheel was anything close to straight on a flat level road based on the measurements you shared.

If the operator doesn’t understand how caster works on a live axle and is trying to dial in different amounts side to side, which you can only do on independent front suspensions systems, it’s time to ask for another alignment tech to do the setup or go somewhere else. Your dealership is fine but they may just have the wrong person doing the alignments. Sometimes the more experienced techs don’t like doing alignments as they see it as tedious boring work so it falls to the next tech.