Makita HM1140C Instruction Manual page 9

MAINTENANCE
CAUTl ON
:
Always be sure that the tool is switched off and unplugged before attempting to perform
inspection or maintenance.
Replacing carbon brushes
When the resin insulating tip inside the car-
bon brush is exposed to contact the com-
mutator, it will automatically shut
off
the
motor.
When this occurs, both carbon brushes
should be replaced at the same time. Use
only identical carbon brushes.
Loosen the screws which secure the rear
cover. Pry up the rear cover with a screw-
driver and remove it.
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.
Insulating tip
>r--
! I
Commutator
/ T
/ I
Carbon brush
9