Jay
The Parts List has a nice exploded view of the fuel pump that might
help you.
http://www.tigersunited.com/resources/parts_rs260/Parts_List/3-BF-PetrolFuel
Pump.pdf
I don't see the 2- 1/2" o-rings either but the kit may cover several pump
configurations in this series.
As for the plastic bubble - I just pulled my SU apart and there is no spring
and the bubble was in the up position.
I pressed on the bubble and it went right down - I'm going to guess that
down position is its normal position.
I have not rebuilt an SU pump but the points set up does not seem that
difficult just many steps. I'm condensing what I see in the Manual.
The main body is in your hand - you screw in the diaphragm while push it
with your thumb until the points just throw over then unscrew the diaphragm
to the nearest hole then unscrew 4 more holes - that sets the diaphragm.
Now set the rest of the point system with feeler gage.
Ron Fraser
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of Jay Laifman
Sent: Friday, April 13, 2012 1:43 AM
To: tigers@autox.team.net
Subject: Re: [Tigers] Rebuilding the SU Fuel Pump
For what it is worth, I took apart the fuel pump today. Much of it was very
easy. However, there was a thick washer and a small rubber washer that I
did not now what to do with because they were not on the pump I took apart.
When I read through the rebuild kit instructions I found them. One is a
neoprene "impact washer" that goes on the shaft of the diaphragm the other
is a lead washer that goes on one of the threaded posts. They are shown
clearly enough in the pictures.
I have not done the points part yet. That seems pretty confusing,
especially to get all the adjustments right. Neither the Workshop Manual
nor the instructions with the rebuild kit are clear. Hopefully I will
figure it all out. When I do, I will write it up more clearly - and send a
copy to Rick!
Also, there are two small o-rings, about 1/2" in diameter that were in the
kit and I don't see where they are supposed to go. They definitely did not
come off the pump.
Finally, of interest, there is this semi flexible plastic bubble of sorts
that serves to soften the thumping of the gas (item 11 in the Workshop
Manual picture). The picture shows a wire spring behind this bubble, number
(10) in the picture. There definitely was not a spring in the pump I took
part. And, there was no replacement spring provided in the rebuild kit.
Interestingly, I just realized something. When I took it apart, this bubble
was pointing OUT away from where the fuel would be pushing. In the picture
it is shown pointing IN to the fuel, and the spring is pushing against it.
I just installed it as I took it apart. But, I'm now thinking I should flip
it around. The bubble will then be its own spring from the air pressure
behind it. Anyone have any similar thoughts???? Maybe the stock one is
supposed to be pointing in, but after years of work, if flips. But that
would only flip if the air leaks out so the cushion is not there.
Oh, also, the Workshop Manual seems to show the intake hole (18 in the
picture) larger than the out hole (14 in the picture). But on the pump I
have, they are the same size.
Jay
On Apr 12, 2012, at 10:00 AM, jay.laifman@gmail.com wrote:
> Ha! I think I might have been responsible for starting him on the
> road away
from VB. I had no end of issues with carpet, tonneau, and rubber. Most
didn't fit. What fit was poor quality. Then when I ordered a servo from
them, it was the last straw. I bought their "kit" because for the same money
as SS I got the servo and installation mounting kit. Once I got it, I found
out the mounting pieces were garbage and the servo was the wrong pressure
ratio (1.9:1, where Rick sold the 2.3:1 and stock was actually closer to
3:1). But that's another story.
>
> I'm going to rebuild the SU on the car - and do it with my son. Only
fitting.
>
> Thanks for the info.
>
> Jay
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