10
824113
Motor Brush Replacement
NOTE: Replace brushes when worn to about 0.5 in.
(12.5 mm). Always check both brushes. Brush Repair
Kit 236–967, which includes spring clip 112–766, 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).
Relieve pressure; page 3.
1.
Remove both inspection covers (A) and their
gaskets. See Fig 5.
Fig. 5
A
02831A
2.
Push in the spring clip (F) and release its hook (G)
from the brush holder (B). Pull out the spring clip.
See Fig 6.
3.
Slide off the brush lead terminal (E) off the blade
connector. Remove the old brush (C). See Fig 6.
Fig. 6
F
G
E
D
C
B
H
Motor lead; do not disconnect
Minimum 0.5” (12.5 mm)
Included in Brush Repair
Kit 236–967
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.
Fig. 7
G
C
E
F
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. 7. 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.