GE Magne-Blast AM-13.8-1000-3H - Bushings Replacement

GEX
-
88766
E
.
Contact
Blade
Assembly
(
4
*
5
*
7
)
Fig
.
24
.
1
»
Remove
the
connection
bar
(
9
)
.
2
e
Remove
the
cup
bearing
(
3
)
and
the
pin
(
ll
)
.
3
.
When
reassembling
*
first
insert
the
piston
assembly
the
booster
cylinder
and
reassemble
the
cup
bearing
4
e
Replace
pin
(
ll
)
.
,
and
connection
bar
(
9
)
.
F
.
After
disassembly
and
reassembly
of the
contacts
*
check all
contact
adjustments
as
described
under
ADJUSTMENTS
.
into
I
Bushings
IMPORTANT
:
DO NOT
REMOVE
ALL
SIX
BUSHINGS
AT
ONCE
.
The
bushings
have
been
ca
-
refully
aligned
with
the
breaker
frame
*
during
assembly
at
the
factory
*
and
it
is
important
that
this
alignment
be
maintained
to
fa
-
cilitate installation
of the
breaker
in
the
metal
-
clad
unit
.
It
is
*
therefore
*
recommended
that
the
bushings
be
removed
and
reassembled
one
at
a
time
.
Also
*
before
removing
any
one
bushing
*
measure
the
dis
-
tance
from that
particular bushing
to
adjacent
bushings
in
both
direc
-
tions
*
so
that
it
may
be
reinstalled
in
the
same
location
.
It
is
also
possible
to
remove
and
reassemble
three
bushings
at
one
time
.
If
this is
preferred
*
alignment
of the
bushings
may
be
accomplished
by
placing
the breaker
in
a
de
-
energized
spare
metal
-
clad
unit
before
tightening
the
bushing mounting
bolts
.
This
must
be
done
before the
are
chutes
are
reinstalled
.
#
To
replace
the
bushing
*
proceed
as
follows
:
Rear
Bushing
1
.
Open
the
breaker and
remove
the
rear
*
side
*
interphase
barriers
*
and
arc
chutes
as
already
described
.
2
.
Remove
the
upper
and
lower
horizontal
barriers
(
14
and
18
)
*
Fig
.
7
.
3
.
Remove
the
four
bolts
at
the
mounting
flange
of
the
rear
bushing
be
-
ing
removed
and lower
the
bushing
assembly
.
4
.
Referring
to
Fig
.
23
*
disassemble
the
primary
contact
springs
(
6
.
)
as
previously
described
.
5
»
Disassemble
the
spring
retainer
(
4
)
by
removing mounting
bolts
(
5
)
.
I
I
24
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