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6.5. Checking and Replacing Brush Assembly on Universal Motor
To prevent premature failure of the armature, periodically check the brushes for wear as follows:
1. Depress the DUMP switch to release the pressure from the system, then DISCONNECT the pump
from the power supply.
2. Remove the four screws and brush assembly cover plate from each side of the motor.
3. Remove the two brush holder caps and brush assemblies.
4. If either brush is 3.17 mm [0.125 in.] or less in length, replace the brush assembly. Refer to Figure 10.
5. Re-install the brush holder caps and brush assembly cover plates.
7. DISPOSAL
The pump should be returned to TE for proper disposal. Contact the customer repair services number in
section 8 to make disposal arrangements.
Rev G
Figure 10: Checking brush assembly of universal motor
409-1950
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