Maintenance; Replacing Carbon Brushes - Makita BDF441 Instruction Manual

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.

Replacing carbon brushes

1
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 two screws then remove the
rear cover.
Raise the arm part of the spring and then place it in the
recessed part of the housing with a slotted bit screw-
driver of slender shaft or the like.
1
2
006258
1. Limit mark
006729
1. Rear cover
2. Screws
1
2
006730
1. Arm
2. Spring
3. Recessed part
3
Use pliers to remove the carbon brush caps of the car-
bon brushes. Take out the worn carbon brushes, insert
the new ones and replace the carbon brush caps in
reverse.
Make sure that the carbon brush caps have fit into the
holes in brush holders securely.
1
2
Reinstall the rear cover and tighten two screws securely.
After replacing brushes, insert the battery cartridge into
the tool and break in brushes by running tool with no load
for about 1 minute. Then check the tool while running and
electric brake operation when releasing the switch trig-
ger. If electric brake is not working well, ask your local
Makita service center for repair.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
ACCESSORIES
CAUTION:
• These accessories
recommended for use with your Makita tool
specified in this manual. The use of any other
accessories or attachments might present a risk of
injury to persons.
attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Drill bits
• Screw bits
• Hook
• Grip assembly
• Various type of Makita genuine batteries and
chargers
8
006731
1. Carbon brush
cap
1
006304
1. Hole
2. Carbon brush
cap
or attachments
Only use accessory
are
or