Motor Brush Replacement
6.Fig. 9. Insert brush (B). Push cap (A) into place over brush. Orient each cap with the 2 projections on either side of the brush lead. You will hear a “snap” when cap is securely in place.
CAUTION
When installing brushes, follow all steps carefully to avoid damaging parts.
7.Fig. 9. Install red (+) and black (--) motor leads according to tags. Install brush lead end with screw (C) to motor-mounted capacitor or route lead into control box and connect to board.
A
C
B
| E | To Motor (D) |
|
| |
| ti7479a |
|
| C |
|
Fig. 9 |
| TI0053 |
|
|
8.If replacement brush harness has 2 yellow wires (C), cut, strip, and crimp the 2 yellow wires (D) from the motor and butt splice (E) on the replace- ment harness.
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.Remove pump (13); Displacement Pump Replacement, page 26.
b.With sprayer OFF, turn pressure 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.
