Motor Brushes
NOTE: Replace brushes when worn to about 0.5 in. (12.5 mm). Always check both brushes. Brush Repair Kit 236967, which includes spring clip 112766, is available for motors manufactured by Pacific Scientific.
NOTE: Replacement brushes may last only half as long as the original ones. To maximize brush life, break in new brushes by operating the sprayer for at least one hour with no load (remove the pump connecting rod pin).
WARNING
INJECTION HAZARD
To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief
Procedure on page 9.
1.Remove both inspection covers (A) and their gaskets. See Fig 14.
A
04653
Fig. 14
2.Push in the spring clip (F) and release its hook (G) from the brush holder (B). Pull out the spring clip. See Fig 15.
3.Slide off the brush lead terminal (E) off the blade connector. Remove the old brush (C). See Fig 15.
1Motor lead; do not disconnect
2Minimum 0.5º (12.5 mm)
3Included in Brush Repair Kit 236967
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| H | C |
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G |
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3 F |
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Fig. 15 |
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| D | 03881 |
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4.Inspect the commutator for excessive pitting, burning or gouging. A black color on the commuta- tor is normal. Have the commutator resurfaced by a qualified motor repair shop if the brushes seem to wear too fast or arc excessively. See Step 9.d., also.
5.Repeat for the other side.
NOTE: The motor brushes on the other side are upside down.
6.Place a new brush (C) in the holder (B) so the ramp (H) faces the spring. See Fig. 16.
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| F | G |
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| C |
Fig. 16 | E | 03881 |
7.Holding the spring clip (F) at a slight angle, slide the spring clip into the brush holder and hook it over the end of the holder. See Fig. 16. Pull on the spring clip to be sure it stays in place. Connect the brush lead to the blade connector (E).
8.Repeat for the other side.
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