Application Note:
The cam (#160) and cam retainer (#170)
shown are minor modifications of the
standard parts (0020-84807 & 0020-84806)
and have been designed to secure
together via threads, instead of press
fit. These parts are not
inter-changeable with the AMAT design
and must be used together.
The arc chambers shown with balloons 210
(200mm) and 240 (300mm) are different
because of the gaps milled into the top
of the chamber for fitting with the
mating arc slits. These parts are not
interchangeable and must correspond to
the proper arc slits.