Maintenance; Replacing Carbon Brushes - Makita JN3200 Instruction Manual

Use the hex wrench provided to remove the two screws
and insert the washer below the die. Replace screws and
tighten securely.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before attempting to perform inspection
or maintenance.
Never use gasoline, benzine, thinner, alcohol or the
•
like. Discoloration, deformation or cracks may
result.
Punch & die service life
Replace or sharpen punch and die after cutting the
lengths indicated in the accompanying table. Their life, of
course, depends upon the thickness of materials cut and
lubrication conditions.
Punch Replace after 150 m (492 ft.) of 3.2 mm (1/8") steel sheet
Die Sharpen after 300 m (984 ft.) of 3.2 mm (1/8") steel sheet
006440
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
portion, finish with a dressing stone. Stock removal
should be about 0.3 to 0.4 mm (1/64").
004793
When installing ground die, a clearance of 3.5 to 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 to
have the proper clearance will result in vibration during
cutting.
1
2
3
004794
1. Grind/sharpen;
1
0.3 - 0.4 mm
(1/64")
2
2. Remove dull
portion
1. 3.5 -4.0 mm
(1/8" - 5/32")
2. Die
3. Washer
CAUTION:
Secure installing screws carefully when installing. A
•
loose screw can cause tool breakage during
operation.
NOTE:
The die can be sharpened two times. After two
•
sharpenings, it should be replaced with new one.

Replacing carbon brushes

001145
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
004796
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
6
1. Limit mark
1
1. Screwdriver
2. Brush holder
cap
1
2