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richclover

WY

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Posted: 11/20/19 06:11pm Link  |  Quote  |  Print  |  Notify Moderator

2018 Ram 2500 Tradesman, Cummins. Towed the camper to Mesquite, NV, and noticed a persistent steering pull to the right. I blamed it on the slope of I-15 and, maybe, the crosswind working on the camper.

But, driving home without the camper the same thing happened.

Off to the local Big O tire shop. Alignment was very close to correct and after adjustment, the truck still pulled right. Wheels rotated front to back, then left front to right front... No change. Brakes checked, no dragging brake.

But wait... I noticed the truck looked to be not level sitting in the garage. The right front wheel well measured about 2” lower than the left. Right rear is about 1 1/2” lower than the left.

Measurements confirmed by the local dealer today. No reason found yet. Confirmed no broken springs, coil all around. Shocks are okay. Ball joints okay.

10,000 miles on the truck...

Has anyone heard of a similar problem?


Rich
2018 Ram 4X4 2500HD Cummins
2018 Coleman Lantern 262BH
2019 RAM 1500 Classic 4X4 Hemi
2019 CanAm Maverick Sport 1000
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Tyler0215

Iowa

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Posted: 11/20/19 07:37pm Link  |  Quote  |  Print  |  Notify Moderator

Sounds like weak springs. Get them all replaced not just the low side.
Still in warranty? You will have to fight to get them to cover all four springs

Busdriver

Shepherdsville Ky 40165

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Posted: 11/20/19 07:45pm Link  |  Quote  |  Print  |  Notify Moderator

Frame Bent, had a friend with a new Ram frame bent


Busdriver 2019 2500 Chevy Duramax , - 2017 Grand Design 303 RLS

ScottG

Bothell Wa.

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Posted: 11/20/19 07:55pm Link  |  Quote  |  Print  |  Notify Moderator

Recently read about a RAM that was doing the same thing. Turned out the allignment shop, in an effort to stop the live axle suspension from pulling away from the crown in the road, had turned the caster adjusters on either side completley different directions which is a total no-no.


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bucky

Raleigh metro

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Posted: 11/21/19 04:29am Link  |  Quote  |  Print  |  Notify Moderator

You need to measure the frame, not the body.


2005 Cummins 2500 2WD LB quad cab pulling a 2014 Blue Ridge 3025RL


carringb

Corvallis, OR

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Posted: 11/21/19 07:53am Link  |  Quote  |  Print  |  Notify Moderator

Busdriver wrote:

Frame Bent, had a friend with a new Ram frame bent


This is what I would suspect too. But aren't all the crossmembers welded?

I had an F650 rollback that got tweaked. Almost the same way, where the driver front corner was sitting about 2" low. Put new springs on. Twice. No change. Finally corner-weighed it to rule out springs, then center-jacked the front end. The frame was twisted about 5". Probably from loading a heavy truck while diagonal in a ditch. The F650s use Huck-bolts on all the crossmembers, so we loosened them all (got some good snaps and pops in the process), set it on jack stands, and torqued them back up. All was good after that.


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richclover

WY

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Posted: 11/21/19 08:42am Link  |  Quote  |  Print  |  Notify Moderator

Tyler0215 wrote:

Sounds like weak springs. Get them all replaced not just the low side.
Still in warranty? You will have to fight to get them to cover all four springs



The local dealer, where I bought the truck new August 2018, got it in the shop yesterday noon. They "think" the springs are ok but I'll go by there later this morning and make sure they measure them.

The drag link recall (jam nut weld), was done by the same dealer in April this year. Alignment has been checked twice since.

No wrecks or overloading or frame twisting...

This "issue" is fairly recent. Cause unknown, so far. Right, the warranty is in play [emoticon]

Grit dog

Black Diamond, WA

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Posted: 11/21/19 08:55am Link  |  Quote  |  Print  |  Notify Moderator

^ What ScottG said.
Do some research on this and verify for yourself on the truck, but likely the caster adjustment on the front control arms is way out of whack.
Make sure the caster adjustment marks are the same or very close to the same and you should have 4+ degrees of total positive caster and very close to zero toe in for the best alignment.


https://www.thurenfabrication.com/tech/alignment-and-handling.html


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

richclover

WY

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Posted: 11/21/19 04:07pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

^ What ScottG said.
Do some research on this and verify for yourself on the truck, but likely the caster adjustment on the front control arms is way out of whack.
Make sure the caster adjustment marks are the same or very close to the same and you should have 4+ degrees of total positive caster and very close to zero toe in for the best alignment.


https://www.thurenfabrication.com/tech/alignment-and-handling.html


That was an interesting read, thanks!

Especially note 4... Caster mis-adjustment causing lean. In fact, I don't recall seeing the lean until after the tire shop did the alignment.

I took the Thuren spec sheet and the tire shop alignment report to the dealer this afternoon. I've asked the dealer to realign the truck to Thuren specs. They'll cut off the welded jam nuts (recall drag link fix), and hopefully do it right.

The tire shop admitted difficulty getting good readings with the nuts welded...

Attached are before and after tire shop reports. Yes, the caster cams are set way different. Note the toe...

Before:

[image]

After:

[image]

NJRVer

NJ

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Posted: 11/21/19 04:24pm Link  |  Quote  |  Print  |  Notify Moderator

My 3500 was pulling the same way.
Once I had the alignment done to thuren specs, no more pull.

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