Allis-Chalmers BWX-6637-5, Инструкция

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' 4.
and Main
Contact
Either
m
o
v
i n g
arcing contact
(
620)
or
m
a
i
n contact (617)
or both,
may be removed
and
replaced as follows:
Follow
the steps outlined in paragraph
3 i n c
l
u
d
i n
g removal
of pin
(603) or
if
hinge contact fingers a
re
not
to
be replaced,
omit these
steps and
begin by placing a
.18711
diameter
rod
at
l
ea
s
t 2" long
thr
o
u
g
h the opening
In
support
(615)
as shown in Oetai
I
11B11•
Remove
pin
(601)
a
n
d pin
(603)
if these-have
not
been removed previously.
The complete
movable
c
o
n
tac
t
assembly
may
now
be brought
to
a
bench .
It is
su g g
e
s
t
e
d
that a 0.511
thick
piece of wood or
phe
n
ol
i c
be
placed upright in a vise
and
the open slot in
clevis (612}
placed
again�t
It as a
rest. The location of
spacers (602), (604) and (625)
sh
o
ul
d
be noted. To
minimize adjustment
up
o n
reassembly,
the position
of
the two screws
(608)
relative to pin
(618) s
h
o
u
ld
also be noted.
Then the two elastic stop nuts (621) s
h
o
u
ld be loosened
and screws
(608) backed off far
e
no
ugh
to
remove
them from pin (618).
CAUTION:
EXTREME CARE SHOULD BE TAKEN TO
HOLD
THE ASSEMBLY
FIRMLY
TO
RETAIN SPRING GUIDE (610)
AND
SPRING (609)
UPON REMOVAL
OF THE SCREWS.
The moving arcing
contact
or t
h
e
main
contact
may
now
be easily
replaced. The reverse pr
o
c
e
du
r
e
i s
fo
l
low
e d for
reinstallation.
Care
should be
t
a
k e
n to replace spacers (602}, (604}
and
(625)
co
r
re c
t
l
y
.
Check alignment
a
n
d
adjustment of contacts upon reassem bly.
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