Makita JN3200 Instruction Manual page 7

Maintenance
After using, clean out the die area, lubricate with machine
oil,
run for
a
minute or two
and store the tool.
Replace after 150
m
(492.1 ft.)
of 3.2
mm
(118") steel sheet
Sharpen after 3 0 0
m
1984.3 ft.)
of 3.2 m m (118") steel sheet
Punch
Punch & die service l i f e
Replace or sharpen punch and die after
cutting the lengths indicated in the ac-
companying table. Their life, of course,
depends upon the thickness
of
materials
cut and lubrication conditions.
*When cutting is poor even after replacing
the punch, sharpen the die. Grind down
the dull edge shown in the figure using a
grinder. After rough-grinding the dull por-
tion, finish with a dressing stone. Stock
removal should be about 0.3 t o 0.4 mm
(1/64")
per pass; two passes should suf-
fice.
When installing ground die, a clearance of
3.5 t o 4.0 mm (1/8"
to
5/32") should be
obtained by attaching one or two of the
washer provided, as shown in the figure.
Failure t o have the proper clearance will
reulst in
vibration
during cutting.
Caution ;
Secure installing screws carefully when
installing. A loose screw can cause tool
breakage during operation.
Grind/sharpen;
Remove dull
p o r t i o n
3.5 -4.0 mm
I
r m
Washer