[Saloon-lovers] SU electronic fuel pump - 2 unexpected fittings/vents?

Salooners,

I have just received an electronic SU fuel pump from XK Unlimited to replace an old purolator pump installed by the PO that is about to die. I have no original pump to go by (other than pics in parts manual). On the end of thecast iron part is a spade electrical connector and an L-shaped small tube that swivels. WHat is it? Near the pump end is anothe spade electrical connector and a nipple for a very small rubber tube (?). What is this nipple for? I then have the two fuel line ports on the pump. Was just expecting two fuel line ports and two electrical connectors.

I am guessing the L-shaped swivel is air intake or vent and the small nipple for a hose is some sort of overflow drain???

Thanks

Art
'57 MkVIII - 3.4L

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Art,
I just rebuilt my SU fuel pump a week ago. The hot electrical wire goes to
the post connection, the ground wire goes to one of the screws that holds
the main part of the pump together. The two vents do not have any
connection, they open to the atmosphere, both appear to be breathers. (If
fuel comes out of these, the pump has problems.

Good luck

Karl

1959 Mark IX
790667 BW
e-mail karl.heins@ucop.edu

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In reply to a message from Karl Heins sent Tue 27 May 2003:

Karl, from your comments, and from what I have been experiencing
with my 1966 S-type each time I use the right hand tank, when the
car warms up, I have fuel coming out of the two holes you mention,
so I will assume the fuel pump needs replacing. It also hesitates
when pulling up hill on that tank also.
1966 S-type 3.8 MOD–
Russell coe
san mateo Califorina, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

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Karl,

Thanks…that is what I needed to know!

Art
'57 MkVIII-----Original Message-----
From: Karl Heins [mailto:Karl.Heins@ucop.edu]
Sent: Tuesday, May 27, 2003 1:24 PM
To: saloons@jag-lovers.org
Subject: Re: [Saloon-lovers] SU electronic fuel pump - 2 unexpected
fittings/vents?

Art,
I just rebuilt my SU fuel pump a week ago. The hot electrical wire goes
to
the post connection, the ground wire goes to one of the screws that
holds
the main part of the pump together. The two vents do not have any
connection, they open to the atmosphere, both appear to be breathers.
(If
fuel comes out of these, the pump has problems.

Good luck

Karl

1959 Mark IX
790667 BW
e-mail karl.heins@ucop.edu

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Russell,

There are three parts on these pumps that are replaceable, the rubber
diaphragm, the check valves, and the points. I have replaced the points
and one valve on one of my pumps. It made a big difference (it now works).

If there is gas leaking, I think it may be the rubber diaphragm. The main
seal is a rubber diaphragm between the housing where the gas goes through
and the electrical parts of the pump. This rubber diaphragm can be
replaced. I haven’t replaced this part, but it did not look to difficult.

Good luck.

Karl

1959 Mark IX
790667 BW
e-mail karl.heins@ucop.edu

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