12 309977
Motor Brush Replacement
CAUTION
When installing brushes, follow all steps carefully to
avoid damaging parts.
7. Fig. 4. Insert brush (B). Push clip (A) until it snaps
into place and secures brush.
8. Install red brush lead (+) and black brush lead (–)
according to markings on the motor and capacitor.
Install brush lead end to capacitor with screw (41).
A
B
ti4815a
+
–
+
Fig. 4
9. Inspect commutator for excessive pitting, burning
or gouging. A black color on commutator is normal.
Have commutator resurfaced by a motor repair
shop if brushes wear too fast.
10. Test brushes.
a. Disconnect pump (31); Pump Repair,
Removal, steps 8 and 9, page 18.
b. With sprayer OFF, turn pump control knob fully
counterclockwise to minimum pressure. Plug
in sprayer.
c. Turn sprayer ON. Slowly increase pressure
until motor is at full speed.
11. Break in brushes.
a. Operate sprayer 1 hour with no load.
b. Connect pump (31); Pump Repair,
Installation, step 4, page 18.
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