S&C Mark V Circuit-Switchers Installation Manual page 13

STEP 5� Remove the brain-and-interrupter assembly from
the insulator-mounting supports, following this
procedure:
(a) Attach lifting slings in the manner shown in
Figure 7. Be sure the slings do not interfere
with the interrupter target on the side of
the brain, the gas-pressure indicator, the
pressure-relief device, or the shunt-trip oper-
ating shaft (if applicable).
(b) Remove the cap screws fastening the brain
to the rotating-insulator support and the cap
screws fastening the interrupter to the rear
insulator support.
Pressure-relief
device
Gas-pressure
indicator
Figure 7� Removing brain-and-interrupter assembly and the jaw-contact assembly�
STEP 6�
Brain-and-
interrupter
assembly
(c) Hoist the brain-and-interrupter assembly and
set it aside on a clean surface. Do not permit
the assembly to rest on the shunt-trip shaft
extending from the brain (if applicable).
Unbolt and remove the jaw-contact assembly
and terminal adapter, as a unit, from the front
insulator support. See Figure 7.
S&C Instruction Sheet 711-510
Installation
Terminal
adapter
Jaw-contact
assembly
Front insulator
support
13