On Fri, 8 May 1998, David Moag wrote:
> Hello all. The fuel pump on my TR3B has what appears to be some trashed
> threads where the output fuel pipe connects. This leads to the pipe screwing
> in at a bad angle, and gas leaks. Since the pump is made of pot metal (it's
> the original style), I am not sure I can simply re-tap the threads. Any
> ideas what I should do?
The actual seal for the fuel pipe (I'm assuming the inlet pipe, and I'm
also assuming it's the same as the fuel pump on my TR4) is acheived by a
brass olive (ferrule...) that gets crushed around the pipe. So if you can
re-tap the threads, and they're a little chewed up, that's OK. They just
have to hold the olive against the seat below the threads to permit a
seal.
*Note that teflon tape will not help seal the fitting, but anti-sieze
compound will allow you to undo it
*Note also that fittings (and any threads) can give false torque readings
when installed 'wet' (ie, oiled, or with anti-sieze compound)-- so don't
over-tighten the fitting, or you may rip all the threads out.
-Malcolm
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