Fuel pump O-ring seal positioning? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 3 (permalink) Old 12-11-2012, 12:45 AM Thread Starter
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Main Motorcycle: 08 speedy black
 
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Fuel pump O-ring seal positioning?

Hi there,

My 08 speedie is leaking fuel , by the looks its from around the fuel pump.

So, I took it apart , the o-ring "looks" ok , but i have ordered another one just in case.

My question is, i noticed the O-ring has a groove in it, is it meant to be mounted on the rim of the tank itself (in the groove)?

or just sit on the underside of the tank with the base of the fuel pump pressed against it ?


thanks for your help.

(PS, the current one was NOT mounted on the rim.

Around OZ on my speedie.
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post #2 of 3 (permalink) Old 12-11-2012, 02:21 AM
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I took a look at my manual, it says (copied verbatim):

1 If removed, position a new '0'-ring seal in the tank aperture and ensure that it is correctly seated

2 Taking care to ensure the '0'-ring is not damaged or dislodged, manoeuvre the fuel pump assembly into the tank aperture with the 'FRONT' arrow is facing towards the front of the fuel tank.

3 Tighten the mounting plate fixings to 5 Nm.


I actually did this when I first got my bike 4 years ago; I got a free set of black bodywork, so I swapped the pump and fuel cap from the original white tank to the new black one. Damned if I can remember much about it, though. Sorry.
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post #3 of 3 (permalink) Old 12-11-2012, 03:51 AM Thread Starter
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Hi there,

thanks, I've managed to get a workshop manual , and yeah the word "aperture " makes me think it is meant to go on the rim of the opening itself.

the existing one wasnt like that , it was resting on the outer edge basically "clamped" inplace by the pump assembly...

Around OZ on my speedie.
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