Frame rust - what the??

[tom geiger]

Sorry guys, have another question on something I discovered when I was under the motorhome checking the battery and starter cables. I saw the box
frame had some sizable rust holes in it around where it hits the front cross frame just in front of the axle. I know that the battery may have caused
some of this rusting but this looks a little concerning. The hole is on the inside face of the box frame just forward of the cross member. The outer
part of the box, appears to be a thicker c-channel that the boxed in with plate steel seams to be pretty good, but the plate steel on the inner face
of the box is rusted out in the bearing point area. You guys had this condition? Other side (drivers side) looks fine.

Thanks,
TG

 

[Jim Hupy]

Fairly common where the use winter salt on the roads. Not so much here in
the Pacific Northwest, except on the coast. Frames are all 40+ years old,
and showing their age. Treat the rust, and reinforce the frame, or replace
that side of the front frame clip is the cure.
Jim Hupy
Salem, Oregon

On Sun, Jun 21, 2020, 2:06 PM tom geiger via Gmclist <

> Sorry guys, have another question on something I discovered when I was
> under the motorhome checking the battery and starter cables. I saw the box
> frame had some sizable rust holes in it around where it hits the front
> cross frame just in front of the axle. I know that the battery may have
> caused
> some of this rusting but this looks a little concerning. The hole is on
> the inside face of the box frame just forward of the cross member. The outer
> part of the box, appears to be a thicker c-channel that the boxed in with
> plate steel seams to be pretty good, but the plate steel on the inner face
> of the box is rusted out in the bearing point area. You guys had this
> condition? Other side (drivers side) looks fine.
>
> Thanks,
> TG
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[sgltrac]

Pics?

Sully
Bellevue wa

On Sun, Jun 21, 2020 at 2:06 PM tom geiger via Gmclist <

> Sorry guys, have another question on something I discovered when I was
> under the motorhome checking the battery and starter cables. I saw the box
> frame had some sizable rust holes in it around where it hits the front
> cross frame just in front of the axle. I know that the battery may have
> caused
> some of this rusting but this looks a little concerning. The hole is on
> the inside face of the box frame just forward of the cross member. The outer
> part of the box, appears to be a thicker c-channel that the boxed in with
> plate steel seams to be pretty good, but the plate steel on the inner face
> of the box is rusted out in the bearing point area. You guys had this
> condition? Other side (drivers side) looks fine.
>
> Thanks,
> TG
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[jim kanomata1]

Todd can show you how to weld supports over the area as he runs a body shop
and familiar with GMC MH.

On Sun, Jun 21, 2020 at 3:43 PM Todd Sullivan via Gmclist <

> Pics?
>
> Sully
> Bellevue wa
>
> On Sun, Jun 21, 2020 at 2:06 PM tom geiger via Gmclist <

>
> > Sorry guys, have another question on something I discovered when I was
> > under the motorhome checking the battery and starter cables. I saw the
> box
> > frame had some sizable rust holes in it around where it hits the front
> > cross frame just in front of the axle. I know that the battery may have
> > caused
> > some of this rusting but this looks a little concerning. The hole is on
> > the inside face of the box frame just forward of the cross member. The
> outer
> > part of the box, appears to be a thicker c-channel that the boxed in with
> > plate steel seams to be pretty good, but the plate steel on the inner
> face
> > of the box is rusted out in the bearing point area. You guys had this
> > condition? Other side (drivers side) looks fine.
> >
> > Thanks,
> > TG
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> 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.gmcrvparts.com
1-800-752-7502

 

[tom geiger]

Here are some pics at the cross member. This is on the inside of the main box frame. The second picture is the outside face.

TG

 

[johnny]

One sided rust like that is indicative of battery slop - usually overfilling - over the years. Shine it up wit a wire brush, and take a look inside
for condition there. I've a quarter inch in diameter borescope camera with a light which was 17 dollars on ebay for looking at stuff like that. If
inside isn't too beat up spray it with POR15 and then have your friendly welder reinforce the whole thing with some heavy plate and go about your
business.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell

 

[tom geiger]

Yep Johhny, was thinking for sure I want this repaired. It just appears to be more rust on the inside face of the box than I’m comfortable seeing.
I’ll see what can of repair service I can get for this.

Thanks,
Tom

 

[sgltrac]

I cannot see a link to pics. I’m an email user.

Sully
Bellevue wa

On Mon, Jun 22, 2020 at 6:48 AM tom geiger via Gmclist <

> Here are some pics at the cross member. This is on the inside of the main
> box frame. The second picture is the outside face.
>
> TG
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[tom geiger]

Sorry on the pics, had trouble trying to upload them. I’ve got a friend taking care of it. He own’s a body shop and says he’s fixed this kind
of thing many times before.

Thanks all,
TG