Her butt wiggles

tom geiger

New member
Dec 31, 2006
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Well normally not a bad thing,, but on my motorhome not so much. I get a vibration in what feels to be the back passenger side of the coach. Now I've
replaced shocks, replaced wheels, just a new set of tires and I still get this wiggling. It occurs around 60-65 mph. Is there anything else I need to
check back there? This has happened even when I switch around tires, so it seems to be something in the suspension or brake drum?? Totally perplexed!

Thanks all,
Tom
76 Eleganza II
Kansas City Mo
 
> Well normally not a bad thing,, but on my motorhome not so much. I get a vibration in what feels to be the back passenger side of the coach. Now
> I've replaced shocks, replaced wheels, just got a new set of tires and I still get this wiggling. It occurs around 60-65 mph. Is there anything else
> I need to check back there? This has happened even when I switch around tires, so it seems to be something in the suspension or brake drum?? Totally
> perplexed!
>
> Thanks all,
> Tom
> 76 Eleganza II
> Kansas City Mo

Tom,

Your direction is correct, but you don't mention checking tire pressure vs weight.
There are still two other simple (well, simple to find) possible issues.

Jack and block both sides rear. Now push-pull on each rear tire.

Is anything loose?
If yes, it can be either a wheel bearing. - Easy, just uncap and adjust as the manual recommends.
Or bogie arm bearings. - Nothing easy about this.

If it is bad when you do the push-pull top and bottom, that is probably a wheel bearing. If you uncap and put an finger in there, you will feel the
movement.

If it is bad when you do the push-pull front and back and different than the top/bottom, arm bearings are the better bet.

Good Luck

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
Tom,
Give me a call a there is too much to address.
(800) 753-7502 WE can help.

On Sat, Aug 3, 2019 at 6:39 AM Matt Colie via Gmclist <

> > Well normally not a bad thing,, but on my motorhome not so much. I get a
> vibration in what feels to be the back passenger side of the coach. Now
> > I've replaced shocks, replaced wheels, just got a new set of tires and I
> still get this wiggling. It occurs around 60-65 mph. Is there anything else
> > I need to check back there? This has happened even when I switch around
> tires, so it seems to be something in the suspension or brake drum?? Totally
> > perplexed!
> >
> > Thanks all,
> > Tom
> > 76 Eleganza II
> > Kansas City Mo
>
> Tom,
>
> Your direction is correct, but you don't mention checking tire pressure vs
> weight.
> There are still two other simple (well, simple to find) possible issues.
>
> Jack and block both sides rear. Now push-pull on each rear tire.
>
> Is anything loose?
> If yes, it can be either a wheel bearing. - Easy, just uncap and adjust
> as the manual recommends.
> Or bogie arm bearings. - Nothing easy about this.
>
> If it is bad when you do the push-pull top and bottom, that is probably a
> wheel bearing. If you uncap and put an finger in there, you will feel the
> movement.
>
> If it is bad when you do the push-pull front and back and different than
> the top/bottom, arm bearings are the better bet.
>
> Good Luck
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
Wiggle to me means left to right. You say that it only happens in a narrow speed range. To me that's more of a shake. A shake would be tied to
rotating assembly speed with it's frequency. Still sounds like a tire problem since no wiggle below threshhold speed .
--
John Lebetski
Woodstock, IL
77 Eleganza II
 
Understand. In that context I will have to get someone to ride with me and see what they feel just to make sure wether its a side to side motion or up
and down. I see what you mean pertaining to the narrow range it occurs.

Thanks for your comment!
Tom
 
I had a slight groaning sound between like 62 and 67 MPH. It was a rough outer bearing on leading RH rear. Wonder if boggie pin is so worn the entire
arm is oscillating ?
--
John Lebetski
Woodstock, IL
77 Eleganza II