[Healeys] PBR brake servo

[Stephen Hutchings]

Hello everyone,

I’ve had a PBR VH44 brake servo on my car for over 25 years, and I’ve found a source for a rebuild kit.
I was looking to rebuild the unit, not because there’s anything wrong with it, but it's been in active service a long time, and I really don’t want to find out it’s failed the hard way.
I use Dot 5 silicone fluid (please let’s not get into that controversy again!), and it would not be very good if that got sucked in to the engine via the manifold.

Anyway, I wonder if anyone out there has rebuilt one of these units. I’ve attached a couple of photos - one of the opened unit, and a close up of the end of the shaft that goes into the cylinder bore.  I’m really not sure of how to release this gizmo…and I don’t want to bugger it up, of course.
I will probably end up phoning the supplier in Australia (I’m in Canada), but I thought I’d check with the list first.

Thanks,
Stephen, BJ8

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