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Motor Brush Replacement
311911C 19
Motor Brush Replacement
FinishPro 395
Removal
Replace brushes worn to less than 1/2 in. Brushes wear
differently on each side of motor, check both sides.
Brush Repair Kit 287735 is available.
1. Read General Repair Information, page 7.
2. Relieve pressure, page 7.
3. Remove motor shroud and two inspection covers
(A).
4. Push clip spring (B) to release hook (C) from brush
holder (D). Pull out spring clip (B).
5. Pull brush lead (E) off terminal (F). Remove brush (G).
6. 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.
Installation
1. Install new brush (G) with lead into brush holder (D).
2. Slide brush lead (E) onto terminal (F).
3. Install spring clip (B). Push down to set hook (C) into
brush holder (D).
4. Repeat for other side.
5. Test brushes.
a. Remove pump. Displacement Pump Replace-
ment, page 13.
b. With sprayer OFF, turn pressure control knob
fully counter-clockwise to minimum pressure.
Plug in sprayer.
c. Turn sprayer ON. Slowly increase pressure until
motor is at full speed.
6. Install brush inspection covers (A) and gaskets.
7. Break in brushes.
a. Operate sprayer 1 hour with no load.
b. Install pump. Displacement Pump Replace-
ment, page 13.
A
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B
C
G
E
F
D
1
1
2
2
3
3
Motor lead; do not disconnect
Minimum 0.5 in. (12.5 mm)
Included in Brush Repair Kit
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CAUTION
When installing brushes, follow all steps carefully to
avoid damaging parts.
CAUTION
Do not run sprayer dry for more than 30 seconds
while checking brushes to avoid damaging displace-
ment pump packings.
B
E
D
C
G
F
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