Siemens 5-GMI-350 - Troubleshooting; Breaker fails to close

Maintenance
&
Overhaul
Page
34
i
Figure
63
.
Replacement
of
Primary
Disconnect
Finger
.
4
A
CAUTION
Figure
61
.
Piston
Rings
and
Dashpot
Piston
.
Special
care
needs
to
be
exercised
in
removal
of
hardware
around
the
bottom
,
or
movable
contact
end
,
of
the
vacuum
interrupter
.
The
movable
contact
uses
a
metal
bellows
assembly
to
maintain
the
vacuum
seal
while
still
permitting
up
and
down
motion
of
the
contact
.
This
bellows
assembly
is
rugged
and
reliable
,
and
is
designed
to
withstand
years
of
vertical
movement
.
However
,
caution
should
be
exercised
in
subjecting
the
bellows
to
ex
-
cessive
torque
during
removal
and
re
-
placement
.
Twisting
the
bellows
through
careless
bolt
removal
or
tightening
may
damage
the
vacuum
interrupter
.
Vacuum
Interrupter
Removal
Steps
for
removal
of
the
vacuum
interrupter
are
:
1
.
Remove
the
two
“
X
-
Clips
"
holding
the
bell
crank
to
the
push
rod
shown
in
Figure
64
.
These
clips
cannot
be
reused
.
2
.
Spread
the
jaws
of
the
bell
crank
and
allow
the
push
rod
to
drop
down
exposing
the
bottom
connections
to
the
movable
contact
.
4
Figure
62
.
Replacement
of
Spring
Charging
Motor
.
r
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