Girling AR and NR calipers

[Brian Evans <brian@uunet.ca>]

Does anybody know how the large plugs on the sides of these calipers, used
to machine the bores, are sealed?  I have one NR caliper that is weeping
fluid past this plug, and I don't want to open it up until I know what's the
correct drill to seal these things up again.

Thanks, Brian