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Body to frame grounding straps [message #264854] Sun, 26 October 2014 14:09 Go to next message
RF_Burns is currently offline  RF_Burns   Canada
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I was hunting down some electrical gremlins this morning. From my reading there should be 2 ground straps from the body to the frame (front right and rear left. I can't find either of these grounds. I see the engine to frame ground, intact and in good condition.

Can anyone point me where to look for the two body to frame grounds... pic links even.

thanks

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

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Re: [GMCnet] Body to frame grounding straps [message #264858 is a reply to message #264854] Sun, 26 October 2014 15:03 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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You say you can see the engine to frame ground
But you can't find the two body to the frame grounds.

There should be two engine to frame grounds. One at the right front side of the engine. The other one is at the rear transmission mount.

Emery

> On Oct 26, 2014, at 1:09 PM, Bruce Hislop wrote:
>
> I was hunting down some electrical gremlins this morning. From my reading there should be 2 ground straps from the body to the frame (front right and
> rear left. I can't find either of these grounds. I see the engine to frame ground, intact and in good condition.
>
> Can anyone point me where to look for the two body to frame grounds... pic links even.
>
> thanks
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
> Hubler 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
> _______________________________________________
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Re: [GMCnet] Body to frame grounding straps [message #264859 is a reply to message #264854] Sun, 26 October 2014 15:06 Go to previous messageGo to next message
sgltrac is currently offline  sgltrac   United States
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Registered: April 2011
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Off the right cab spar to the front right cradle area an off the rear trans mount to the cradle.

Todd Sullivan

Sully
77 royale
Seattle

> On Oct 26, 2014, at 12:09 PM, Bruce Hislop wrote:
>
> I was hunting down some electrical gremlins this morning. From my reading there should be 2 ground straps from the body to the frame (front right and
> rear left. I can't find either of these grounds. I see the engine to frame ground, intact and in good condition.
>
> Can anyone point me where to look for the two body to frame grounds... pic links even.
>
> thanks
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
> Hubler 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
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sully 77 Royale basket case. Future motorhome land speed record holder(bucket list) Seattle, Wa.

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Re: Body to frame grounding straps [message #264872 is a reply to message #264854] Sun, 26 October 2014 19:17 Go to previous messageGo to next message
midlf is currently offline  midlf   United States
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Registered: July 2007
Location: SE Wisc. (Palmyra)
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Senior Member
RF_Burns wrote on Sun, 26 October 2014 14:09
I was hunting down some electrical gremlins this morning. From my reading there should be 2 ground straps from the body to the frame (front right and rear left. I can't find either of these grounds. I see the engine to frame ground, intact and in good condition.

Can anyone point me where to look for the two body to frame grounds... pic links even.

thanks


http://www.gmcmhphotos.com/photos/g6081-frame-ground-connections-1974.html

Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI

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Re: Body to frame grounding straps [message #264876 is a reply to message #264854] Sun, 26 October 2014 21:14 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
On my 76 PB, the front strap is located from body to frame around or electrically bypassing the right front body cushion. I do not have a picture here and the coach is not at home to take one. I have my front wheel liners out and I see it all the time when I'm working around the right front wheel.

The rear one is located on the floor of the battery box storage area right near the door. You will see one vertical bolt with cables on it. That is it. On the underneath side of that bolt you will find a cable going to the frame. Somewhere I read that this rear cable was only installed if you have an ONAN generator. It was part of the Onan installation package.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: Body to frame grounding straps [message #264887 is a reply to message #264854] Mon, 27 October 2014 06:59 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
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Registered: June 2008
Location: S. Ontario, Canada
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Senior Member
Todd,
Thanks I see the right front ground strap now. Its in a place not easy to see.

Ken,
I looked back there and specifically on or around the house battery ground bolt and could find nothing. I'll look again and I'll add one if I can't find it.

Thanks guys.

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

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Re: Body to frame grounding straps [message #264890 is a reply to message #264887] Mon, 27 October 2014 08:35 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
What kind of generator do you have?

That ground strap is not really necessary because you have the front one, but I would still install it. On the ones that I have seen, the bolt goes vertically through floor. On the top of the floor that bolt is the negative battery connection and the Onan negative connection. On the bottom of that same bolt was another cable going direct to the frame.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: Body to frame grounding straps [message #264919 is a reply to message #264854] Mon, 27 October 2014 16:06 Go to previous message
RF_Burns is currently offline  RF_Burns   Canada
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
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Senior Member
Ken,
Mine has the original 6kw Onan.

I've put it on the winter to do list.

Now I just need to get my in-floor heating going in the new shop and I'll be all set!

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

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