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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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