only one side rubbing

only one side rubbing

Postby aManAndaVan [OP] » April 25th 2020, 9:24pm

I just put on new tires (235/75/15) with stock suspension. i noticed the rear driver side tire rubs the front of the wheel well when im accelerating hard or going over a big dip in the road. so i added a 2 inch body lift and a rear lift kit from journeys( shackles and hangers). the rear is jacked all the way up. The rear isnt as lifted as i imagined it would be. ive only gained about 2 inches of lift and the tire still rubs.when parked theres 2 inches of space between the front of the tire and wheel well.

the previous owner had leaf spring helpers installed but they were on backwards/upside down so im pretty sure they were lowering not lifting the rear. i removed them but didnt get any additional lift( i did this before installing the new rubber and lift kit).

im now thinking the rear leafs are possibly worn leading to the rubbing. they are the stock springs from what i can tell(4 leafs). im more concerned about the axle play than the height at this point. ive checked the clamshells and everything seems tight. it should also be mentioned that the rear end was also swapped out with a rebuilt rear with 342 gears.... any ideas?

im planning on replacing the leafs with 1195s and U bolts if needed but hate just throwing parts at the problem.

is rear end alignment possibly an issue? can the rear be aligned on these vans?

any help is GREATLY appreciated.

before and after lift installed. the after pic is the pic with the front bumper cover on the saw horses.
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Re: only one side rubbing

Postby Rockridge » April 25th 2020, 10:22pm

Possibly the body is out of alignment with the subframe? That would make tire rub different side to side.

Looks like it sits perfect
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Re: only one side rubbing

Postby aManAndaVan [OP] » April 25th 2020, 10:38pm

The rear tire is rubbing.... if the front was rubbing i could understand the subframe alignment but the rear?
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Re: only one side rubbing

Postby AstroWill » April 25th 2020, 11:28pm

I'm going to go with worn out springs, probably wrapping pretty bad on acceleration.
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Re: only one side rubbing

Postby Rockridge » April 26th 2020, 1:05am

Sorry, missed that it was the rear.
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Re: only one side rubbing

Postby Mmusicman » April 26th 2020, 2:55am

It might not have anything to do with the springs (unless it's hitting the top of the fender).
Clam-shell bolts tight?
Rear may be shifting forward.
(looks off-centered in the photo)

Mine wasn't rubbing, but I found it was shifting.
I fixed it.. it doesn't shift forward anymore.
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Re: only one side rubbing

Postby Coaster » April 26th 2020, 4:23am

looks like drivers side rear wheel is too far forward in wheel well.

should be more centered in well

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Re: only one side rubbing

Postby aManAndaVan [OP] » April 26th 2020, 4:30am

Clamshell Bolts are as tight as they can be. And yes its still not centered in the opening even after the lift. It was BAD with just the rear shackles. After installing the hangers i feel like im back to square one....So my other question.... can the rear be out of alignment? Can the rear be aligned on these vans?
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Re: only one side rubbing

Postby Coaster » April 26th 2020, 4:32am

have you taken the shells apart?
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Re: only one side rubbing

Postby icebrrg3rd » April 26th 2020, 4:37am

I go with the axle wrap...

Where the tire normally sits:

2019-04-24_TireRub2.JPG


Under abrupt acceleration:

2019-04-24_TireRub1.JPG


Driver side does it too but doesn't contact the fender.

I have a set of 4-leaf springs I will be mounting soon, which (I hope) solves this issue.

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Re: only one side rubbing

Postby CopperFiremistCopperFiremist is online! » April 26th 2020, 5:00am

^That
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Re: only one side rubbing

Postby augidog » April 26th 2020, 5:12am

CopperFiremist wrote:^That
ever since I got mine, I've been sure something's moving around in the right rear. It almost feels like a u-joint, or a tranny mount, until you pay closer attention. I don't have a 2nd set of eyes to help me figure it out, but I'm pretty convinced it's leaf-related.
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Re: only one side rubbing

Postby Mmusicman » April 26th 2020, 1:25pm

aManAndaVan wrote:So my other question.... can the rear be out of alignment? Can the rear be aligned on these vans?

As far as I know, there is no actual rear alignment adjustment.
But can the rear be out of alignment? I'd say quite possibly.

A lift-shackle may cause some minor issue too (mostly when springs are unloaded), but the fixed pivot point (in front of spring pack) is stationary and fixed. It doesn't change. I would suspect any shift would be extremely minimal. It certainly wouldn't cause one side to be different than the other.

---------------------------------------------------

I actually accidentally discovered my rear was moving when I was taking drive-shaft yoke measurements.. and was wondering why I kept getting different measurements on different days. I also noticed the entire rear was moving in a video of me pulling a heavy load.

I attribute some of this movement to spring wrap, as well as soft or worn rubber bushing issues. But in my case the rear was actually moving.. and staying in place AFTER movement. I measured wheel to fender distance and found one side different than the other. My rear was actually crooked. Apparently, when I would brake, it would shift to one position, when I would accelerate it would shift to the other position. Finally, I hooked a tie-down strap around the rear and attached it to a frame point.. started cranking the strap and suddenly I saw the rear move! I thought "holy crap batman"! lol

In my case, when I took a closer look, I discovered the little bolt that goes thought the spring-pack had shifted forward as far as it could in the clamshell. I finally resolved my particular problem by not only torque-wrenching down the clamshell bolts, but by putting in a "centering spacer" (the same size as the clamshell opening) so it is centered and can no longer move. I also had to recenter the lift blocks on the differential mount. In my case, the clamshell bolts were no-where near as tight as they needed to be, but that's an issue related to using clamshells with lift blocks. Then while attempting to torque the bolts down even further, I had issues with the clamshell bending (with my block-lift application).. but that's another story for another post.

This was my "non-conventional solution" to prevent my rear from shifting...

20200322_170959a-Clamshell.jpg

I can't say this is your issue, but it was mine.
Something to possibly consider and take a look at ...
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Re: only one side rubbing

Postby augidog » April 26th 2020, 2:09pm

Do I see no insulators? Is it really metal-on-metal by design? Could that be (part of) the issue? Collapsed or non-existent insulators? Spring vendors refer to insulators, but my service manual shows nothing. I will try and see if it's a factor on mine.

EDIT: i do have center insulators top and bottom on my OE 3-leaf suspension, but i also have corrosion and leaf separation/movement. Pics in my build thread. Thanks to the OP and contributors for the education.
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Re: only one side rubbing

Postby AstroWill » April 26th 2020, 6:58pm

icebrrg3rd wrote:Image


Great pictures, could you do a video from under the van showing what the springs are doing when that happens, before you fix it :) Bet it makes a nice S shape when it happens, can kinda see how high the rear part of the leaf is in the second picture though.
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Re: only one side rubbing

Postby aManAndaVan [OP] » April 26th 2020, 9:06pm

oh the possibilities!.... thank God for a community forum such as this. i think im going to take the axle wrap approach and replace the springs since disassembling the clams to inspect is already almost half the work. after driving around today i can definitely tell there is less life in the spring pack im having issues with. thanks for all your help!

as of now i was able to get away without the extended rear brake line but i have a feeling that after replacing the leaf pack im going to need it.

anybody here using front coil spring spacers AND a 2 inch body lift? am i going to NEED the steering shaft extension? ive heard mixed opinions in the past. some said that the 95-05 have a long enough shaft. thanks in advance
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Re: only one side rubbing

Postby icebrrg3rd » April 26th 2020, 9:11pm

Hey Will, I had my brother-in-law video that while I accelerated, wonder if I can get him to lie under the van while I do it...? :think:

Maybe I'll attach a dash cam under there before I do my leaf spring swap.

Oh, and when it does this, I can feel that the rear end is steering the van. And I do know that the clamps are tight and the axle-to-leaf connections are not moving.

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Re: only one side rubbing

Postby AstroWill » April 26th 2020, 9:46pm

LOL, well for the health of your BIL would probably be best to mount it to the van. I was thinking of strapping a camera to the drivers side frame rail looking over towards the passenger side spring. Might have to remove the spare tire to get a better video showing the whole leaf spring. Lots of cameras have a screw mount on the bottom for a tripod, but can be mounted to a piece of flat stock with a proper sized screw(1/4-20).
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Re: only one side rubbing

Postby SportsBoy » April 27th 2020, 1:43am

Yeah, IMO if the rear is "jacked all the way up" and there isn't much of a difference between the two pics, then you probably need new springs. If the PO had helpers on the leafs before, it was probably because they are shot.
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Re: only one side rubbing

Postby aManAndaVan [OP] » April 28th 2020, 4:19am

installed new(used) springs today from a local pick.n.pull off an 05. found out my axle was shifted forward because the center bolt on the pack was sheared off. PO installed spring helpers because he intermittently carried 8 passengers and gear.... the helpers would bottom out on the end of the springs and then hit the clamshell causing it to shift and in turn shear the bolt.... got er fixed now and riding like it should. thanks again for the help
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