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Return through Superior AZ [message #274622] Tue, 31 March 2015 00:02 Go to next message
Bob de Kruyff   United States
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Location: Chandler, AZ
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On my way back from Roosevelt, all of a sudden I smelled burning rubber, belt squeeling and gradual overheating on the downhill back home. It was not at all what I suspected. Any fun guesses?

Bob de Kruyff
78 Eleganza
Chandler, AZ
Re: Return through Superior AZ [message #274623 is a reply to message #274622] Tue, 31 March 2015 00:10 Go to previous messageGo to next message
roy1 is currently offline  roy1   United States
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Bob de Kruyff wrote on Mon, 30 March 2015 22:02
On my way back from Roosevelt, all of a sudden I smelled burning rubber, belt squeeling and gradual overheating on the downhill back home. It was not at all what I suspected. Any fun guesses?


Doesn't sound like fun to me. If it was overheating down hill it must have involved the water pump


Roy Keen Minden,NV 76 X Glenbrook
Re: Return through Superior AZ [message #274640 is a reply to message #274622] Tue, 31 March 2015 09:14 Go to previous messageGo to next message
thesmith is currently offline  thesmith   United States
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Bob de Kruyff wrote on Tue, 31 March 2015 00:02
On my way back from Roosevelt, all of a sudden I smelled burning rubber, belt squeeling and gradual overheating on the downhill back home. It was not at all what I suspected. Any fun guesses?



Rubber air baffle/hose or similar came loose and rubbed on fan? burning the rubber and reducing cooling air flow

Pete


Cary, NC 1978 Center Kitchen Royale.
Re: [GMCnet] Return through Superior AZ [message #274642 is a reply to message #274640] Tue, 31 March 2015 09:25 Go to previous messageGo to next message
Jerry Wheeler is currently offline  Jerry Wheeler   United States
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I would say an old radiator hose sagged when it got hot and touched one of
the belts, slowing cutting a hole in the hose and causing radiator fluid
loss and the engine to overheat. This happened to me about 13 years
ago going from Sacramento to Reno via the Donner Pass.
JR Wheeler 78 Royale NC/OR

On Tue, Mar 31, 2015 at 10:14 AM, Pete Smith wrote:

> Bob de Kruyff wrote on Tue, 31 March 2015 00:02
>> On my way back from Roosevelt, all of a sudden I smelled burning rubber,
> belt squeeling and gradual overheating on the downhill back home. It was
>> not at all what I suspected. Any fun guesses?
>
>
>
> Rubber air baffle/hose or similar came loose and rubbed on fan? burning
> the rubber and reducing cooling air flow
>
> Pete
> --
> Cary, NC
>
> No Coach yet but dicided it will be wet bath.
>
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Re: [GMCnet] Return through Superior AZ [message #274645 is a reply to message #274642] Tue, 31 March 2015 10:09 Go to previous messageGo to next message
Bob de Kruyff   United States
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
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Senior Member
Jerry Wheeler wrote on Tue, 31 March 2015 08:25
I would say an old radiator hose sagged when it got hot and touched one of
the belts, slowing cutting a hole in the hose and causing radiator fluid
loss and the engine to overheat. This happened to me about 13 years
ago going from Sacramento to Reno via the Donner Pass.
JR Wheeler 78 Royale NC/OR

On Tue, Mar 31, 2015 at 10:14 AM, Pete Smith wrote:

> Bob de Kruyff wrote on Tue, 31 March 2015 00:02
>> On my way back from Roosevelt, all of a sudden I smelled burning rubber,
> belt squeeling and gradual overheating on the downhill back home. It was
>> not at all what I suspected. Any fun guesses?
>
>
>
> Rubber air baffle/hose or similar came loose and rubbed on fan? burning
> the rubber and reducing cooling air flow
>
> Pete
> --
> Cary, NC
>
> No Coach yet but dicided it will be wet bath.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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That was it. It rubbed a hole in the hose and the hole pissed right on the water pump pulley causing all 3 belts to slip. My first reaction was a seized AC compressor, but shutting it off only reduced the belt squeal. Then I thought that maybe the fan was rubbing on the shroud due to a sagging engine mount. In the end it was something that I had to keep an eye on because how close the hose is to the alternator belt, but apparently I wasn't watching it closely enough. I'm going to make up a small bracket to support that hose from sagging--in fact I recall that someone made one up recently. Given all that I did check the fan clearance to my shroud and it is getting pretty close at the bottom so it's time for a new mount.


Bob de Kruyff
78 Eleganza
Chandler, AZ
Re: [GMCnet] Return through Superior AZ [message #274680 is a reply to message #274645] Tue, 31 March 2015 16:39 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Location: Sydney, Australia
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Bob,

I noticed that the upper radiator hose on Double Trouble (455 powered) sat on the upper left (driver side) fan shroud bracket. When
I lifted it up the hose a bit I noted the spot that rested on the shroud bracket had a small indent caused by chaffing. I cut a
piece of old radiator hose about 3 inches long wrapped it around the hose and tie wrapped it in place. So far so good.

Regards,
Rob M.
The Pedantic Mechanic

-----Original Message-----
From: Bob de Kruyff

That was it. It rubbed a hole in the hose and the hole pissed right on the water pump pulley causing all 3 belts to slip. My first
reaction was a seized AC compressor, but shutting it off only reduced the belt squeal. Then I thought that maybe the fan was rubbing
on the shroud due to a sagging engine mount. In the end it was something that I had to keep an eye on because how close the hose is
to the alternator belt, but apparently I wasn't watching it closely enough. I'm going to make up a small bracket to support that
hose from sagging--in fact I recall that someone made one up recently. Given all that I did check the fan clearance to my shroud and
it is getting pretty close at the bottom so it's time for a new mount.
--
Bob

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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: Return through Superior AZ [message #274681 is a reply to message #274622] Tue, 31 March 2015 17:10 Go to previous message
Chr$ is currently offline  Chr$   United States
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Registered: January 2004
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C'mon, Bob, it's over 90* out there. Must've picked up a gator...
Rolling Eyes


-Chr$: Perpetual SmartAss
Scottsdale, AZ

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