Okay - yesterday I had a problem extracting the secondary piston while in the
process of rebuilding my master cylinder for the my 74 Spitfire (early type
tandem unit). I was able to extract it after some sage advice from the list
(banging cylinder on a block of wood).

My question today is this - after extracting it I realized that the secondary
piston appearred to have been installed backwards (i.e. the secondary piston
was installed so it did not engage with the spring instead the valve seal unit
engaged with the spring). The expanded view of the master cylinder in the
Haynes manual suggests that this is backwards. However, noting that the brakes
worked for approx. 8 years the way that the master cylinder was setup prior to
me attempting to rebuild I wanted to confirm that the Haynes expanded view is
the correct orientation of the internal parts of the master cylinder. I am
leaning towards the fact that the garage I had rebuild the master cylinder
eight years ago screwed up, but you know the saying "measure twice and cut
once" so I thought I would double check.

Thanks,

Jim Cullen

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