| My frame is sagging, or bowing in the middle [message #297665] |
Sat, 19 March 2016 14:15  |
 |
RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
|
Senior Member |
|
|
I had noticed some ripples in my body panels and that my rub rail did not appear to be striaght. So today I pulled a string line on both sides along the rub rail using the marker light screws as a reference. Sure enough my coach body is higher in the middle and sags to each end. Its about 5/8" on the passenger side and 1" on the drivers side.
So then I did the same thing along the underside of the straight frame rails. I used jar lids as spaces on each end to clear the bogie mount. The middle of the passenger side is about 1/2" higher than the ends. On the driver's side its about 5/8" difference.
The middle body pads are squished more than the ends, so the center of the frame is taking more weight than the ends.
Is this normal? I'd like to fix it since its causing cracks in the body seams.
I've posted some photos. sorry about the poor quality, the dawg was trying to help.
http://www.gmcmhphotos.com/photos/g6922-frame-sagging.html
Thanks for any ideas.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
