Inspecting and Replacing Brushes in a Bodine Type 24A Motor or Gearmotor. Lit. P/N 07481065.A © Bodine Electric Company 2007 Page 2 of 2
851-636 Rev. A
STEP #3 – Remove Brushes and Springs
After the brush caps are removed from each side of the motor, the brush springs will be plainly visible as in Figure 3.
Simply grasp the spring and pull the brush and spring out of the motor. The spring will be attached to brush as seen in
Figures 4 and 5.
Fig 3
Fig 4
STEP #4 – Inspect Brushes
Brush wear rate can vary, depending on the application duty cycle, load, speed and ambient environment. The brushes
should be inspected at frequent intervals to determine an appropriate inspection schedule. Brushes should be replaced
before the total length is less than
.125 inch (3.2 mm)
. See Figure 5.
Fig 5
Repeat the inspection procedure for the other brush. If new brushes are required, record the motor type and serial number
from the motor nameplate. Contact your supplier, any Authorized Bodine Distributor, or our Service Department. You
will find more information on how to contact us on Bodine Electric’s website at:
www.bodine-electric.com
STEP #5 – Clean Out Brush Dust
Excessive carbon dust will accumulate inside the motor endshield over time and should be removed periodically to allow
normal operation. Partial disassembly and cleaning is best. However, carefully applying compressed air alternately
through each of the open brush cap holes may provide adequate cleaning. Do not use solvents as they may damage non-
metallic parts and adversely affect subsequent brush commutation.
STEP #6 – Install New Brushes
Insert the new brush and spring into the brush holder as in Figure 6. Position the brush cap on the exposed end of the
spring, fitting the spring end into the recess on the brush cap. Gently and carefully compress the brush spring beneath the
brush cap. Screw the cap into place and tighten with screwdriver, Figure 7.
Fig 6
Fig 7
STEP #7 – Connect to Power
Reconnect the drive to the power source, and test for proper operation. New brushes may be seated by running the motor
or gearmotor in at no load. Proper seating is required for lowest brush noise level.
All information and data contained in this document are subject to change without notice. Please contact our Technical
Support staff in Chicago, or an Authorized Bodine Service Center, if you have any questions about these instructions.
Web: www.bodine-electric.com Tel.: 773-478-3515 E-Mail: [email protected]
Flat part of spring
