Graco 406258D - Motor Brush Repair Kit 287735 Operating instructions

GENUINE GRACO PARTS & ACCESSORIES

Motor Brush Repair Kit 287735

For Pacific Scientific motors (only)

INFORMATION ENCLOSED

GRACO INC. AND SUBSIDIARIES S P.O. BOX 1441 S MINNEAPOLIS MN 55440–1441 S USA

406258D Revised February 2013

For detailed instructions and warnings, see sprayer manual.

Fig. 1 Fig. 2 Fig. 3

1. Relieve pressure. Unplug sprayer!

2. Remove both inspection covers (H). See Fig. 1.

3. Push in spring clip (A) and release its hook (B) from brush

holder (C). Pull out spring clip. See Fig. 2.

4. Slide off brush lead terminal (D) off blade connector. Remove

old brush (F). See Fig. 2.

5. Inspect commutator for excessive pitting, burning or gouging.

A black color on commutator is normal. Have commutator

resurfaced by a qualified motor repair shop if brushes seem to

wear too fast or arc excessively. See Step 10, also.

6. Repeat for other side.

NOTE: Motor brushes on other side are upside down.

7. Place new brush (F) in holder (C). See Fig. 2.

8. Holding spring clip (A) at slight angle, slide spring clip into

brush holder and hook it over end of holder. See Fig. 3. Pull

on spring clip to be sure it stays in place. Connect brush lead

to blade connector (E).

9. Repeat for other side.

10. Test brushes. Remove pump connecting rod pin. With spray-

er OFF, turn pressure control knob fully counterclockwise to

minimum pressure. Plug in sprayer. Turn sprayer ON. Slowly

increase pressure until motor is at full speed. Inspect brush

and commutator contact area for excessive arcing. Arcs

should not “trail” or circle around commutator surface.

Do not touch brushes, leads, springs or brush holders while sprayer

is plugged in to reduce risk of electric shock and serious injury.

11. Install brush inspection covers (H).

12. Break in brushes. Operate sprayer for at least one hour with

no load. Install pump connecting rod pin.

WARNING

2Minimum 0.5” (12.5 mm)

Included in Brush Repair Kit