2007 Buick Lucerne

Lbsofsoul

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2006 Buick Lucerne
I have A 2007 Buick Lucerne 3.8 with the basic suspension set up. For some reason my ride height is wrong so i was told i cant get a complete alignment. I have replaced all struts. In the front ive replaced wheel hubs, sway bar links and bushings, control arm all the motor mounts except the rear engine mount. My rear passenger tire looks as if its leaning towards the inside of tire well. Plz help. Struts replaced with carquest un the front ant the monroe air struts in rear.
 

2007LucerneCXL

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2007 Lucerne CXL. and 1995 Lesabre currently, past 1973 Riviera, 1968 Riviera
It's hard to tell from your post if the vehicle is having issues on the passenger rear tire assembly or the air shock is at fault. The Lucerne rear suspension are at a fixed point part that is in the middle of the car. This part is a holder for the wobble bolts,#14,16,17 that allow the length of part #30 to be adjusted to change the toe-in adjustment. There is a chance that the wobble adjustment bolts are rusted and may need replacement depending on condition of vehicle.

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A rear wheel camber shim may be the option but unfortunately most shops either don't know about, willing to do or is to expensive for most owners. This may be what the shop was referring to as not being able to do a full alignment, not sure as how or what they said.
 

Lbsofsoul

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So you are saying basically i need to change number 30 from the diagram? Which is the trailing arm it has 2 on each side.
 

2007LucerneCXL

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No, the adjustments #14, #16 are the only ones that can be done for a alignment of the toe and it's the only option on the rear suspension. The camber shim is more involved, requires the hub assembly to be removed and is not a stock component for adjustment on the rear wheels.
alignment-for-car-1-638.jpg
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MelsRegal

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Nobody on the internet can tell you why you are having the camber issue since they can't see your car. You have to find out from the alignment shop exactly why they can't do it or find another shop.
 

2007LucerneCXL

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There is no camber adjustment on the Lucerne rear wheels, can't explain it any better!
 

Lbsofsoul

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Ok thanks. Does anyone know if i have to remove exhaust to change the trailing arms?
 

2007LucerneCXL

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The exhaust doesn't need to be dropped, but the area at the top where the wobble bolts are located #14 is tight against the gas tank just something to be mindful of.

You may want to consider Moog-ck660168 as replacement parts they are a solid bar vs the stamped steel. Also check the conditions of the 2 wobble bolts #14 &16 as they may rusted or considered to be replaced at the same time.
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Lbsofsoul

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The exhaust doesn't need to be dropped, but the area at the top where the wobble bolts are located #14 is tight against the gas tank just something to be mindful of.

You may want to consider Moog-ck660168 as replacement parts they are a solid bar vs the stamped steel. Also check the conditions of the 2 wobble bolts #14 &16 as they may rusted or considered to be replaced at the same time.
Will i have enough to remove the bolts?
 

2007LucerneCXL

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The bolts should clear as I didn't need to drop my tank but it was on a lift so there was full access.
 

myfreeaudi

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I have a question about setting the toe with the wobble bolts. The adjustment moves the big v shaped control arms right and left. But the v shaped control arms are bolted tight with 2 bolts to the sub frame member and the sub frame member has to be lowered. One spec calls for 237 ft lbs.

How does the wobble bolt move the lateral arm and thus the v control arm unless you loosen the 237 ft lb bolts?

I am about to replace the control arms and need to know. Also, if this is hijacking the original thread, I will post elsewhere. But I think my question is relevant to anyone replacing the lateral arms.
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2007LucerneCXL

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Rotating the wobble bolt because of its offset will push or pull the alignment in or out, once alignment is set then the bolt is torqued.
s-l400.jpg d82d830b37063f73489d3f72f2ce1f68.jpg

The rear link in the diagram above #30 should be able to be unbolted at the control arm and there shouldn't necessarily be a need to un-bolt it at the frame. But if it is removed getting a professional alignment should be considered.
 

myfreeaudi

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2007 Lucerne
I have a question about setting the toe with the wobble bolts. The adjustment moves the big v shaped control arms right and left. But the v shaped control arms are bolted tight with 2 bolts to the sub frame member and the sub frame member has to be lowered. One spec calls for 237 ft lbs.

How does the wobble bolt move the lateral arm and thus the v control arm unless you loosen the 237 ft lb bolts?

I am about to replace the control arms and need to know. Also, if this is hijacking the original thread, I will post elsewhere. But I think my question is relevant to anyone replacing the lateral arms.
No, the torque spec for the control arm bolts is 67 ft lbs, NOT 237. This is a typo in the Chilton online shop manual which says 267 (not 237.) So I am no longer worried about the difficulty of torquing these bolts. It can be done "by feel."
 

2007LucerneCXL

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Not sure where you were reading that torque spec but here's what is in the instructions:

Tighten the cam lock nut to 91 N·m (67 lb ft).

Tighten the nut to 30 N·m (22 lb ft) then tighten an additional 180 degrees.

Attached are the Chilton instructions if needed for reference.
 

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myfreeaudi

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Not sure where you were reading that torque spec but here's what is in the instructions:

Tighten the cam lock nut to 91 N·m (67 lb ft).

Tighten the nut to 30 N·m (22 lb ft) then tighten an additional 180 degrees.

Attached are the Chilton instructions if needed for reference.
Thank you.
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