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Old 04-05-2018, 07:42 AM   #1
Mini-Skoolie
 
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Year: 1995
Engine: 12 valve 8.3L Cummins
I need a Bus Detective

My bus has been sitting pretty dormant over the winter in my front yard. I was out clearing some sticks yesterday when I noticed the back of the bus looked like it had been in an accident.

The left bumper is about 3 inches down from where it used to be and the right bumper has grinder it’s way up an inch and is blocking the rear engine access panel from opening.

You can see that metal has been literally ripped apart to make this bumper move the way it did.

The only other piece of the puzzle is that I put two stabilizer jacks on the left side of the bus to help with leveling. This has been done for about 5 months. The bus has not moved in over 6 months.

How the hell did this happen!?!? We’ve had some heavy winds lately but.....racking a piece of steel?

Sasquatch?

Hoping someone can make this less of a mystery

Thanks






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Old 04-05-2018, 09:49 AM   #2
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were your stabilizer jacks on the chassis frame of the bus or on part of the body? if the jacks were on the floor ribs or body then the body would have been holding the weight of the chassis which might cause the body mounts to bend and come apart from the chassis frame...

-Christopher
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Old 04-05-2018, 10:15 AM   #3
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In the top pic, what is level without the jacks under it, the body or the bumper and frame?
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Old 04-05-2018, 01:11 PM   #4
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My bet is along the lines of Christopher. Your jacks lifted the body off the frame on the left side. Took a while to break free, but finally did.
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Old 04-05-2018, 01:15 PM   #5
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Could we get some pictures of the jack placement? That would help..
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Old 04-05-2018, 08:18 PM   #6
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I’m going to take some pics in the morning of the jacks.

They are on the “ribs” that go across the Frame from side to side.

In the top pic the bus is what’s level, the bumper not so much.


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Old 04-05-2018, 08:22 PM   #7
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Sounds like the body channels to me. NOT where you want to lift. Frame or axles only. And do be very careful if that is where the weight is. I would hesitate to go under it in that condition. Definitely stack some really stout cribbing under the axles or frame before venturing below. Hate to say it, but it could drop further.

Best of luck pardner.
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Old 04-05-2018, 08:23 PM   #8
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Ok, easy question: Are the jacks supporting the big beams (the frame rails)?

It sounds to me like the jacks may be supporting the floor cross members.
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Old 04-05-2018, 08:24 PM   #9
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Look underneath on both sides in the morning.. I suspect you will see a gap above the frame rails (the big beams) on one side and no gap on the other...
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Old 04-05-2018, 08:47 PM   #10
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Looks like some local punk teenager was climbing on it!... Or your Sasquatch theory...
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Old 04-07-2018, 09:10 AM   #11
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Mystery Solved....

As many suspected, I had mounted the scissor jacks to the floor ribs. The pressure this put on the frame over 5 months finally caused the damage you saw in the pics above.

I lowered the jacks and the bus settled almost back to where it was. Hopefully the body damage was minimal

Thanks for all the feedback!
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Old 04-07-2018, 09:14 AM   #12
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I would suggest taking a close look at the clamps that hold the body to the frame. I would expect that they were bent and now are resting on top of the frame rails instead clamped under them.
Best to get that fixed.. It's serious business
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Old 04-07-2018, 09:21 AM   #13
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Click image for larger version

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Do you mean the clamps you see here?
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Old 04-07-2018, 09:25 AM   #14
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Yes, that's a different style than on my Thomas, but those are holding the bus body to the frame. Are there more clamps closer to the bumper? Those are the ones I'd expect to be damaged. Look closely, because it's possible that the bolts pulled through.
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Old 09-21-2018, 10:43 AM   #15
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I haven’t moved my jacks since the “incident” started pulling the frame apart.

I’m still confused about where these leveling jacks should be mounted. I took some pics under the bus.Click image for larger version

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Could I move this one rib closer where the floor joist seems to be properly secured to the bus frame?
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Old 09-21-2018, 01:28 PM   #16
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Quote:
Originally Posted by Tango View Post
Sounds like the body channels to me. NOT where you want to lift. Frame or axles only. And do be very careful if that is where the weight is. I would hesitate to go under it in that condition. Definitely stack some really stout cribbing under the axles or frame before venturing below. Hate to say it, but it could drop further.

Best of luck pardner.
X2 100%. The body with its seats and all
is made to come loose in a major wreck
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Old 09-21-2018, 04:41 PM   #17
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The only way to correctly do it is to attach the lift directly to the frame or possibly to a heavy angle bracket bolted to the frame.
I don't know which eaz=lift you have but, their biggest is only rated for 7500 lbs and I suspect that is for a pair which is how they are listed in the catalog. Even if it is each, if you are trying for any lift at all, your rear engine bus is way over that.
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Old 09-22-2018, 05:36 AM   #18
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I’m not sure how regular everyone do it but some of the older coach even have a pretty massive crossmember across the front a d rear .. important that it goes all way across so you don’t twist the frame when jacking.. you want the suspension in play .. you aren’t trying to lift the wheels just level the bus and stop the wobble of the driving suspension. You want your jacks outboard as close to corners as you can so I’ve seen essentially a subframe crossmember used for the jacks.
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Old 09-24-2018, 09:59 AM   #19
Mini-Skoolie
 
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What is considered "Frame" here? The main steel running lengthwise down the bus is too far in the middle.
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Old 09-24-2018, 10:36 AM   #20
Bus Geek
 
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thats is the frame.. if you crawl under you'll see that this wjere the bus body attaches to the chassis.. the cross "members" are the floor ribs and are part of the body and not the chassis. lifting the bus from anything other than eequipment attached to the chassis will tend to separate the body from the chassis.. the body isnt designed to have the chassis hanging from it..



you can Jack the bus on its suspension around each wheel.. ie lift near the spring as that is chassis component.. not enough to pick up the wheel.. but im guessing you'll park somewhere at least somewhat level?
-Christopher
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