REFLECTOR: Franklin Fuel Pumps

Hiroo Umeno humeno at microsoft.com
Tue Oct 2 16:27:59 CDT 2007


I have to look at the part book but PLL-7-6R is the fuel pump for the 6A-350-C1R.  I think it is the one that was ADed out.

Hiroo

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Michael Watson
Sent: Tuesday, October 02, 2007 1:55 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Franklin Fuel Pumps

Wurzel,

What is a PLL-7-6R Franklin engine? I though the Franklin engines
used on the Velocity aircraft was the 6A-350-C1.

If that's what you have, there was a AD issued to replace the
piston type fuel pump with a vane type. The AD can be found
on www.tvbf.org<http://www.tvbf.org> under Franklin engines. The Franklin is and
outstanding engine.


On 10/2/07, wurzel parsons-keir <wurzel at ccpu.com<mailto:wurzel at ccpu.com>> wrote:
After an otherwise lovely flight yesterday, I found blue fuel
spatter around the vent tube coming from my fuel pump.  I understand
that means some seal isn't good any more and I'm grounded
until it's fixed.

I've gone back through various reflector postings on Franklin
fuel pumps, but I'm not sure I have all the information.

My engine has a PLL-7-6R which was installed in Dec 2002.

I don't see anything in the logbook to suggest that
AD # SP- 0048-2003-B was complied with.  I'm having trouble
finding Service Bulletins No. PZL-F/75/2003 using
Google.  I see lots of references to it, but not the
actual document.  Any pointers?

Rick (builder of N570) had a theory when he built the airplane...
"assume every company is going to go out of business and buy two
of everything".  So I have a brand-new PLL-7-6R sitting in a
box.  From the paperwork it looks like it was produced
in 2002, also before the Service Bulletin.

So, from those who are more familiar with this:
1) Are all PLL-7s junk, or is there some chance I have a workable
   spare here?

2) Any pointer on where to find the Service bulletin?

3) Do these pumps have any replacable washers/gaskets etc so
   that I could just rebuild the pump that is installed rather
   than using my new one?  The one that's on there only
   has 200 hours on it.

4) I saw the previous posts mentioning a weldon replacement.
   It sounded like that was a diaphagm type?  Is there any reason
   I would want to go back to that instead of the sliding vane?

                                                Many thanks,
                                                        -wurzel

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--
Mike W.
1997 Velocity Elite RG
Franklin /IVO Electric CS
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