14 308-490
Motor
Brush Replacement
WARNING
ELECTRIC
SHOCK HAZARD
T
o reduce the risk of Electric Shock: wait
5 minutes after turning sprayer of
f before
servicing to allow stored current to dis
-
charge.
NOTE:
Replace brushes when they have worn to 10
mm. Check both brushes. Brush Repair Kit 222–157 is
available. A new spring clip, 1
10–816, may be
purchased separately
.
NOTE:
Replacement brushes may last only half as
long as the original ones. T
o 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
T
o reduce the risk of serious injury
,
whenever you are instructed to relieve
pressure, follow the
Pressure Relief
Procedure
on page 8.
1.
Relieve pressure.
2.
Remove motor cover (14) and both brush inspec
-
tion covers (A). See Fig 7.
3.
Push in spring clip (D) to unhook, and then pull
out. See Fig 8.
4.
Loosen terminal screw (F). Pull brush lead (E)
away
, leaving motor lead (G) in place. Remove
brush (C) and spring (B). See Fig 9.
5.
Inspect motor commutator for excessive pitting,
burning or gouging. A black color on commutator is
normal. Have commutator resurfaced by qualified
motor repair shop if brushes seem to wear too
fast.
6.
Install new brush (C) so lead is in long slot (J) of
the brush holder (H). Slide brush lead (E) terminal
under terminal screw (F) washer
. Make sure motor
lead (G) is still connected at screw
. Tighten
screw (F). See Fig 10.
7.
Place spring (B) on brush (C). See Fig 10.
8.
Push in spring clip (D) and hook. See Fig 10.
9.
Repeat for other side.
CAUTION
Do not run the sprayer dry for more than 30 seconds
to avoid damaging the pump packings.
10.
Reinstall remaining parts.
Fig 7
A
14
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