| Re: [GMCnet] MONDAY, 5p.m. Home at last [message #122350] |
Tue, 19 April 2011 14:07  |
sgltrac
Messages: 2797
Registered: April 2011
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If you have any red scotch brite available you can roll it tight and twist it inside the pump body like a hone to remove rust trails and fuel deposits which might bind up the piston
------Original Message------
From: Mike Miller
Sender: gmclist-bounces@temp.gmcnet.org
To: gmclist@temp.gmcnet.org
ReplyTo: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] MONDAY, 5p.m. Home at last
Sent: Apr 19, 2011 9:58 AM
Michael Bozardt wrote on Mon, 18 April 2011 17:07
> Took all day to change two fuel filters, ... <section snipped >> ... Also, the Onan did not start-fuel pump not pumping. ... << more snipped >> ... Fuel tanks are coming down after that!
There is a fuel filter in the bottom of the Onan fuel pump. Any reason it wouldn't be clogged up just line your "prime mover" fuel filters?
The Onan pump is rather simple. Besides the filter, it has a piston and two check valves. IIRC: Those are the only moving parts in it. I have had good luck with disassembly and cleaning with carb cleaner. I would try cleaning before replacement.
JWIWD.
--
Mike Miller -- Hillsboro, OR -- on the Black list
'73 26' exPainted D. -- `78 23' Birchaven Rear Bath -- `77 23' Birchaven Side Bath
http://m000035.blogspot.com
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] MONDAY, 5p.m. Home at last [message #122758 is a reply to message #122737] |
Fri, 22 April 2011 11:53  |
sgltrac
Messages: 2797
Registered: April 2011
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Senior Member |
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If you take the bottom of the pump off (hold in soft vice jaws and unscrew
the bottom) take note of orientation and order of parts. slide the piston
out and look at the bore as well as piston. Mine had little slug trails of
rust in the bore and the scotch brite cleaned it right out. Blow clean with
compressed air and give it a whirl. Fuel seems to keep leaking out during
disassemble so well ventilated area preferable.
Sully
77 Royale
On Fri, Apr 22, 2011 at 8:23 AM, Michael Bozardt <ilse@earth-comm.com>wrote:
>
>
> While I have this new pump coming to get the Onan operational, I wll take
> your advice and see it it renews the pump...Thx, Michael at GEMRECS
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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