maimin SABRE 2000 - Page 12

8.
BRUSHES
Brushes (ParI
15237)
should
be
inspected periodically
to insure
unintem,rpted
service. Length
of
nerv
brush is 1.250" (31.75
mm).
Minimum
operating length
is 0.500"
(12.7
mm).
Life
depends
on
speed
and load.
We
suggest inspection
brushes
every 1000 hours.
TO INSPECT
BRUSHES:
Remove
brush
cover
(Part
15238)
and
insulator
(Part
15239).
Depress
brush
clip
(Part
15241).
so
as to
disengage
tabs of
clip
and
remove.
Remove
roll
spring
(Part
15240).
Loosen
Phillips
pan
head
screw, remove
lug
and
withdraw
brush
(Part
15237).
MOTORBEARINGS
Bearings
are lubricated
for life.
Rear
motor bearing
(Part
403)
can be replaced
by removing
four 8-
32 keep-nuts (Part
857N)
and back housing
(Part
15235).
Using
bearing
puller,
pull
bearing off
armature
shaft. To remove
front
bearing,
motor must
be disassembled.
See Motor
Disassembly.
After
motor is
separated
from frondhousing,
pull
bearing
offarmature
shaft using
bearing
puller.
MOTOR
DISASSEMBLY
In
order to disassemble
motor,
the
crank must
be removed.
Remove
sharpener
and
connecting
rod.
Insert
handle
ofknife key
into hole
in face
ofcrank and
tap clockwise
until crank loosens
on
armature.
Disconnect
two
armature leads
(A+
& A-) from
control
on
box
(part
4472\.
Remove
nut
for
strain relief
(Part
465K)
and remove
cable
with
quick
disconnects.
To remove
back
housing
(Part
15235)
from
shell
and magnet
assembly
remove four
8-32
kep-nuts (Part
8s7N),
Pull
brushes
(Pafi
15237)
out
and away from
commutator
so as not
to
damage them
when
pulling
armature
from
shell
and magnet
assembly
(Part
15354).
Wilh rubber
or
plastic
headed hammer
tap
end of armature
until complete
motor
separates
from
front housing
CAUTION;
Do not
lose
wave
washer
(Part
15f95)
at back housirrg.
MOTOR
ASSEMBLY
cAUTroN:
Avoid pinching
your
fingers
and
scarring
commutator
or wires.
slide
commutator-end
of armature
through magnets
by using
the edge
of the
ball
bearing
to
guide
start
of
insertion.
10.
ll.