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[GMCnet] Reassembling [message #307120] Wed, 14 September 2016 09:19 Go to next message
glwgmc is currently offline  glwgmc   United States
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Registered: June 2004
Karma: 10
Senior Member
I guess I should know, but don’t…..What is the proper grounding method for the aluminum radiator if one does not have steel lines going from the radiator to the transmission?

Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR

glwork@mac.com
http://jerrywork.com
===============
Message: 7
Date: Tue, 13 Sep 2016 16:42:34 +1000
From: "Rob Mueller"
To:
Subject: Re: [GMCnet] Reassembling
Message-ID:
Content-Type: text/plain; charset="us-ascii"

John,

I'm surprised no one has mentioned that the radiator is grounded to the engine via the transmission oil cooler lines

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
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Jerry & Sharon Work
78 Royale
Kerby, OR
Re: [GMCnet] Reassembling [message #307123 is a reply to message #307120] Wed, 14 September 2016 10:53 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
I'd take a piece of grounding strap, hook one end to the frame bolts and the other to one of the cooling adaptors, or any place on the radiator with a fitting you can stick it under.
And this sends me back to the new used coach to check. Miguel fitted the aluminum radiator, so I'm sure it's grounded. But it dioesn't hurt to look and confirm.

--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
Re: [GMCnet] Reassembling [message #307135 is a reply to message #307123] Wed, 14 September 2016 16:46 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Johnny,

The radiator should be grounded to the engine / transmission NOT the frame.

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426


-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Johnny Bridges via Gmclist
Sent: Thursday, September 15, 2016 1:54 AM
To: gmclist@list.gmcnet.org
Cc: Johnny Bridges
Subject: Re: [GMCnet] Reassembling

I'd take a piece of grounding strap, hook one end to the frame bolts and the other to one of the cooling adaptors, or any place on
the radiator with a fitting you can stick it under.
And this sends me back to the new used coach to check. Miguel fitted the aluminum radiator, so I'm sure it's grounded. But it
dioesn't hurt to look and confirm.

--johnny



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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Reassembling [message #307136 is a reply to message #307120] Wed, 14 September 2016 16:45 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Jerry,

I would suggest stripping the insulation off a piece of wire 1 1/2" and sticking it under between the large hose and aluminum
radiator tube at the bottom of the aluminum radiator. Tighten the screw clamp. Tie wrap that wire to the hose as it runs to the
water pump. Crimp a connector to the end of that wire and connect it to one of the water pump retaining bolts. Fire up the engine
and make sure it there aren't any leaks.

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426


-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Gerald Work
Sent: Thursday, September 15, 2016 12:20 AM
To: GMC Motor Home Post
Subject: [GMCnet] Reassembling

I guess I should know, but don't...What is the proper grounding method for the aluminum radiator if one does not have steel lines
going from the radiator to the transmission?

Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR



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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Reassembling [message #307137 is a reply to message #307120] Wed, 14 September 2016 17:23 Go to previous message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
I usually agree with Rob. Not this time.
Given that the chassis and engine block are currently connect with a heavy strap, they are at the same potential. Consequently, using the radiator frame as a ground will work quite well. Sticking a wire under a hose is, to me, a recipe for early failure of the hose as well as a potential leak, due to unequal pressure on the hose. If you're determined to do this, however, use the top hose - some coolant will remain in the system even if a leak appears. A leak at the lower hose outlet, being the lowest place in the system, will drain it entirely.

n.b. If your coach doesn't have a good ground run between the frame and the engine/transmission, put one. A lack of a good connection will result in strange stray currents, some of which have the potential to Break Things.

--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
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