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  #1  
Old March 24th, 2016, 12:50 PM
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barry f
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Wheel Shake

Trying to figure this out.

Truck shakes at like 55. Thought it was tire balancing.
1. Switched tires to another set of wheels and had them rebalanced. Shake still there
2. Switched springs, shocks, added new tires and wheels. Still shakes there.

Build has extremely low miles on it so I doubt it has a bushing issue.


Any thoughts?

Thanks
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #2  
Old March 24th, 2016, 01:01 PM
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Check tie rod ends, drag link end, swivel ball preload, wheel bearings....easiest test is to stand next to the tire, shake it from the top. You don't *need* to jack it up, but if you do put your hands at 12 & 6 to shake/test (make sure to have jackstands on there so you don't smash your hand if your jack fails).

If you feel anything "bump" or "clunk" like it's loose or hear it, then it's likely wheel bearing or swivel preload. If you do the shake from top as-is method, put some force on it...if it feels tight move on to check other stuff, but if there's any clunk or looseness investigate further.

My guess would be wheel bearings...but that's a total shot in the dark obviously. Bushings/etc can be suspect, especially the panhard pushing, genuine stuff does fail. Steering box too if there's any play, but rather unlikely unless it's high miles or high wear & tear.

Take Tylenol for any headaches. Midol for any cramps .
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  #3  
Old March 24th, 2016, 01:01 PM
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You could remove 1 driveshaft at a time, and see if it goes away. Obviously you need to Engage the CDL to drive around like that. Sounds like it could be a u-joint.
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  #4  
Old March 24th, 2016, 01:13 PM
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just sell me the truck and dont worry. =)
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  #5  
Old March 24th, 2016, 01:15 PM
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Being its in steering wheel I would assume it is front wheels and not a driveshaft. Will start checking crap.
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #6  
Old March 24th, 2016, 01:18 PM
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This isn't the death wobble is it? Steering wheel violently shakes?
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  #7  
Old March 24th, 2016, 01:22 PM
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Quote:
Originally Posted by WeBeCinYa View Post
This isn't the death wobble is it? Steering wheel violently shakes?
It's a bit of that
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #8  
Old March 24th, 2016, 01:30 PM
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Check every part between your transfer case output flanges and wheels for play.

Need more information here, what size tires, any lift? If so, any kind of caster correction ? What do your pinion angles look like? How does the truck actually drive, does it track straight? How does it do as far as "return-to-center" after turns? When is the last time you had an alignment?
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  #9  
Old March 24th, 2016, 01:33 PM
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Quote:
Originally Posted by bjf View Post
It's a bit of that
That shit is scary on interstate. If it happens on smooth surface meaning you don't have to hit a bump to get the shaking I bet wheel bearing. Most people get this symptom and the first thing they want to do is run out and buy a steering dampener, it's not that.
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  #10  
Old March 24th, 2016, 01:44 PM
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If its a new build then I would suggest re-positioning the steering box to the frame. The location of the box to the frame allows quite a bit of slop. Its a good idea to re-position this after new suspension has settled or for example you add a winch/bumper.
1 loosen large the bolts holding the steering box to frame.
2 go for a slow drive around the block with this loose and allow it to find its happy place.
3 torques up the bolts
4 on axle stands, rotate the steering wheel lock to lock and return to exact center. I used masking tape on the dash and steering wheel to find exact center.
5 adjust the steering box to remove play then take off the jack stands.
6 adjust the draglink to straghten the tires.

If you still have issues, check swivel ball preload as mentioned in previous post.
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  #11  
Old March 24th, 2016, 01:44 PM
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what's your toe setting?

does it happen going dead straight or when you are making gradual sweeping rh or lh turns?
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  #12  
Old March 24th, 2016, 01:48 PM
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death wobble is almost always panhard rod bushings or bolts are loose. See torque settings, they are pretty high.
Also torque it down with wheels on the ground not with truck on a jack, otherwise you can tear the bushings when you lower the truck.
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  #13  
Old March 24th, 2016, 02:09 PM
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Quote:
Originally Posted by Uncle Douglas View Post
death wobble is almost always panhard rod bushings or bolts are loose. See torque settings, they are pretty high.
Also torque it down with wheels on the ground not with truck on a jack, otherwise you can tear the bushings when you lower the truck.

Will check. Thanks

truck has 265/75/16 tires
stock ride height.
aligned two days ago.
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #14  
Old March 24th, 2016, 04:00 PM
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Quote:
Originally Posted by bjf View Post
Will check. Thanks

truck has 265/75/16 tires
stock ride height.
aligned two days ago.
Had same issue with my lwb w/same size tires. Swapped panhard with another from my spares pile. Problem solved.
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  #15  
Old March 24th, 2016, 04:07 PM
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All suspension bolts must be re-torqued after use if this was recently assembled. Next suspect is swivel pre-load or lack thereof.
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  #16  
Old March 24th, 2016, 04:08 PM
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1. Panhard bushings
2. swivel preload
3. loose wheel bearing
4. Shot steering damper
5. Worn out steering box
6. Worn out ball joint[s]

My money is you stop going down the list at 1. Bushings are an age thing not a miles thing IME.
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  #17  
Old March 24th, 2016, 04:21 PM
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Quote:
Originally Posted by Red90 View Post
All suspension bolts must be re-torqued after use if this was recently assembled. Next suspect is swivel pre-load or lack thereof.
Just changed springs, and front shocks but it did it before so I assume unrelated.

Will start check stuff when I'm home.

Thanks
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #18  
Old March 24th, 2016, 05:18 PM
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Shakes all the time or just under acceleration/Cruising/coasting?
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  #19  
Old March 24th, 2016, 05:23 PM
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Shakes at around 55mph. I'm ruling out bushings. Talked to owner and its been happening since it was built. No clue why he didn't address it before. Going to assume something is loose.
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  #20  
Old March 24th, 2016, 05:33 PM
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The fact that it's only at one speed pretty much (I've seen exceptions) rules out anything driveshaft or differential.

My money is on a wheel bearing.
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