Maintenance; Replacing Carbon Brushes - Makita DDF458 Instruction Manual

CAUTION:
• Pressing excessively on the tool will not speed
up the drilling. In fact, this excessive pressure
will only serve to damage the tip of your bit,
decrease the tool performance and shorten the
service life of the tool.
• There is a tremendous force exerted on the tool/
bit at the time of hole break through. Hold the
tool firmly and exert care when the bit begins to
break through the workpiece.
• A stuck bit can be removed simply by setting
the reversing switch to reverse rotation in order
to back out. However, the tool may back out
abruptly if you do not hold it firmly.
• Always secure small workpieces in a vise or
similar hold-down device.
• If the tool is operated continuously until the
battery cartridge has discharged, allow the tool
to rest for 15 minutes before proceeding with a
fresh battery.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and
the battery cartridge is removed before attempt-
ing to perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol
or the like. Discoloration, deformation or cracks
may result.

Replacing carbon brushes

► 1. Limit mark
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.
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9 ENGLISH
► 1. Rear cover 2. Screws
Use a screwdriver to remove two screws then remove
the rear cover.
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► 1. Arm 2. Spring 3. Recessed part
Raise the arm part of the spring and then place it in
the recessed part of the brush holder with a slotted bit
screwdriver of slender shaft or the like.
► 1. Carbon brush cap
Use pliers to remove the carbon brush caps of the car-
bon brushes. Take out the worn carbon brushes, insert
the new ones.
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