MAINTENANCE AND
INSPECTION
Caution:
Be sure
to
disconnect the
plug
during
maintenance
and
inspection.
1
. Adjusting the lock lever
position:
The
lock lever part
is
provided with a brass lock
piece
to
protect the column. When the lock piece becomes
excessively worn, the lock position of the
lock
lever
tends
to
drop.
Should router operation and handling become
difficult
as a
result, remove the E-type retaining ring and
adjust the
setting
position of the dodecagonal
hole on
the
lock lever
and the
hexagonal axis
of
the lock
screw,
as
shown
in
Fig.
24.
Fig.
24
2.
Oiling:
To
ensure smooth
vertical movement of the
router, occasionally
apply
a
few drops
of machine
oil to the sliding portions of the columns and end
bracket.
3.
Inspecting
tightness
of
various
screws
Periodically
inspect
each
screw
for
tightness.
If any
screws
are
loosened,
securely
retighten
them.
Loosened
screws,
if
unheeded,
may
cause
a
hazardous
situation.
Wear limit
r
(6mm)
Inspecting
the
carbon
brushes:
(Fig. 25)
The
motor
employs
carbon
brushes
which
are consuma-
ble parts.
Since an
excessively
worn carbon
brush
could
result in
motor
trouble, replace a
carbon
brush
with a new
one
having
the
same
carbon
brush No.
shown
in the
figure
when
it
becomes
worn to
or near the
"wear limit".
In addition,
always keep
carbon brushes
clean and
ensure
that
they
slide freely
within the brush
holders,
o
Replacing a
carbon
brush:
Disassemble
the brush cap
with a
minus-head
screw-
driver.
The
carbon
brush can
then be
easily removed.
0.24'
0.67'
(17mm)
No.
of
carbon
brush
No. of carbon brush
M12V, M12SA
44
M8V,
M8
43
Fig.
25
Note:
Due
to
HITACHI'S
continuing
program of
research
and
development,
the
specifications
herein
are subject to
change
without
prior notice.
15
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