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Re: [GMCnet] Filling Cooling System [message #324462 is a reply to message #324456] Sat, 30 September 2017 00:25 Go to previous message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma:
Senior Member
John,
You are 100% correct in suggesting to check the condition of the system.
Too bad most do not check it and wonder why radiator level goes down and
the reservoir stays full.
Over half of the coaches that come in for service are not functioning.

On Fri, Sep 29, 2017 at 4:07 PM, D C _Mac_ Macdonald
wrote:

> Thanks for the tipoff, John.
>
> I totally replaced the overflow bottle and tubing AND (IIRC) the radiator
> cap with the proper 9.0 psi rating.
>
>
> D C "Mac" Macdonald
> Amateur Radio K2GKK
> Since 30 November '53
> USAF and FAA, Retired
> Member GMCMI & Classics
> Oklahoma City, OK
> "The Money Pit"
> TZE166V101966
> '76 ex-Palm Beach
> k2gkk + hotmail dot com
>
>
> ________________________________
> From: Gmclist on behalf of John
> R.Lebetski
> Sent: Friday, September 29, 2017 17:42
> To: gmclist@list.gmcnet.org
> Subject: Re: [GMCnet] Filling Cooling System
>
> Be sure there are zero micro cracks in the overflow return hose. If it can
> suck any air it will not refill radiator. Also inspect radiator cap well.
> If outer seal is worn or shifted and mushed, it may not pull coolant back
> in. Also check the spring and action on the center poppet valve. I recently
> had a poppet valve spring valve spring fail so cap would build zero
> pressure, even though pressure seal and spring were fine.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
 
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