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Home » Public Forums » GMCnet » New album on the GMC Photo Site (Mystery P.O. Upgrade)
Re: New album on the GMC Photo Site [message #110933 is a reply to message #110932] Wed, 05 January 2011 15:10 Go to previous messageGo to previous message
wally is currently offline  wally   United States
Messages: 643
Registered: August 2004
Location: Omaha Nebraska
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gbarrow wrote on Wed, 05 January 2011 14:14

I posted 6 pictures on the photo site under the user name gbarrow.

This is a device that I disconnected when I bought the coach 8 years ago and only recently removed it from the coach.

I've never seen anything like it on any other GMC.

I think it is a vacumm operated air pump to supplement the Dana Compressor which was barely working when I bought the coach.

If it actually worked I suppose it would keep the pressure topped up while underway and not require the Dana to run as much.

Anyone have one of these or ever see one?

J. C. Whitney used to sell compressors like that in horn kits. Here is a pic of a kit with one.
http://www.hammar.dyndns.org/cgi-bin/showimg?airhorn.jpg?750
Hadley was one of the manufacturers.


Wally Anderson
Omaha NE
75 Glenbrook
 
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