Motor Brush Replacement - Graco Pro 230ES Repair And Parts Manual

Motor Brush Replacement

Motor Brush Replacement
NOTE: Motors used in the Pro 270ES model sprayers
are brushless. The following brush information and
instructions apply to Pro 230ES model sprayers only.
Motor Brush 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 10.
2. Relieve pressure, page 9.
3. Unplug sprayer powercord.
4. Remove motor shroud and two inspection covers
(A).
A
5. Push clip spring (B) to release hook (C) from brush
holder (D). Pull out spring clip (B).
6. Pull brush lead (E) off terminal (F). Remove brush
(G).
1 Motor lead; do not disconenct
2
Minimum 0.5 in. (12.5 mm)
3 Included in Brush Repair Kit
C
3 B
7. 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.
24
ti7386b
2
F
E
G
Motor Brush Installation
When installing brushes, follow all steps carefully to
avoid damaging parts.
B
F
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. With sprayer OFF, turn pressure control knob
fully counter-clockwise to minimum pressure.
Plug in sprayer.
b. Turn sprayer ON. Slowly increase pressure until
motor is at full speed.
Do not run sprayer for more than 30 seconds while
checking brushes to avoid damaging displacement
pump packings.
D
6. Install brush inspection covers (A).
7. Break in brushes
ti7387a
a. Remove pump pin (32), Displacement Pump
1
Replacement, page 17.
b. Operate sprayer 1 hour with no load.
c. Install pump pin (32). See Displacement Pump
Replacement, page 17.
NOTICE
C
D
G
ti7388a
NOTICE
E
3A2817A