Axle shims?
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Postmaster
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From: Davis & Newcastle, CA
Axle shims?
So my truck has had a vibration that happens when accelerating from a stop, for quite some time... The truck has a 4" suspension lift and a 2-piece driveshaft, and I made the problem A LOT better by shimming down my driveshaft support bearing to make my driveshaft a bit straighter
but the vibration is still there... I figured I might try to shim my rear axle and point the diff up more towards the t-case... Anybody have experience with this? How many degrees would I need for a 4" lift and where can I buy them? Couldn't find any on summit...
but the vibration is still there... I figured I might try to shim my rear axle and point the diff up more towards the t-case... Anybody have experience with this? How many degrees would I need for a 4" lift and where can I buy them? Couldn't find any on summit...
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Joined: Mar 2007
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From: Florida
The suspension kit you bought wasn't a block kit Chris?If it was it should have come with block shims....wedge blocks if you will........I don't see why you couldn't get them from a 4x4 shop or sumthin...are you POSITIVE that that driveshaft is the cause of the vibration?Later Buddy.
JR
JR
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From: Davis & Newcastle, CA
The vibration that I'm talking about HERE couldn't be an out of balance driveshaft because it's at a VERY low speed. Like I said, it happens when I accelerate from a stop; just a quick short shudder after I step on the gas, then it stops. I'm pretty sure it has to do with my driveline angle because the intensity of the shudder was GREATLY reduced when I shimmed down my center support bearing.
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It still wouldn't hurt to have it checked. I ran into a similar problem with our ranger for a vibration on take-off. It would go away when It was in 2nd gear doing 20mph. The driveshaft was just a little off that I was able to drive out of it to stop the vibration. Just some food for thought.
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From: Davis & Newcastle, CA
No no, mine comes and goes LONG before 20mph. I'm talkin, it comes around 1-2 mph and stops around 3-4 mph, lol. Its just a real quick SHAKE then it stops, even before I start moving very much.
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From: Davis & Newcastle, CA
Yeah for a while I thought it might be TC shudder... But I don't think that's the problem... Not sure though.
And Junior, my lift was accomplished through add-a-leaf's so no, no lift blocks/shims.
And Junior, my lift was accomplished through add-a-leaf's so no, no lift blocks/shims.
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You could try putting a friction modifier in the transmission fluid and see if that eliminates it then. When I replaced the front pump seal in my E4OD I had a bad shudder when the torque converter engaged/disengaged. At work we had a product called BG Transmission Conditioner that I used. It took it a week or two of driving, but it completely eliminated the shudder and hasn't come back in over 5 months. Just a thought/cheap fix to try if that's the case.
Heard good things about some stuff called Dr Tranny Shudder Fixx (just a friction modifier) and it didn't change a single thing.
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From: Davis & Newcastle, CA
Yes it is a big deal Scott. Think about how any times you stop your truck when you drive even just a few miles... Now imagine that every time you start going after each stop, the truck SHAKES real quick. It gets REAL irritating... Especially when it's been going on for OVER A YEAR!!!!!
And I replaced the u-joints several months back, that was one of my first suspicions/replacements.
And I replaced the u-joints several months back, that was one of my first suspicions/replacements.