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Repair
312066Z 31
Brush Installation
1. Install new brush (B) so lead (L) is in long slot (D) of
holder.
2. Slide terminal (L) under terminal screw (R). Make
sure motor lead terminal (T) is still connected at
screw. Tighten screw.
3. Install spring (S) so it will uncoil onto brush (B), as
shown. Spring will be damaged if installed back-
wards.
4. Install spring clip (C) and push in until hooks (H)
catch slots in housing. Incorrect installation may jam
clip.
5. Reinstall brush inspection covers, gaskets, and
screws. Reinstall motor cover, screws, washers,
and drive housing/pump assemblies.
6. Test brushes with both pump pins (F) disconnected,
page 30.
Select J 1 (jog mode). Press motor to start
motor. Slowly increase jog setting to J 6. Inspect
brush and commutator contact area for excessive
arcing. Arcs should not “trail” or circle around com-
mutator surface.
Run motor for 20-30 min at J 6 to seat brushes.
CAUTION
When installing brushes, follow steps carefully.
Improper installation damages parts beyond use.
Install brush with wires on same side of motor as
before. Plug spade terminal into connector.
D
B
01227-5
L
R
L
T
B
01227-4
B
01227
Note direction of spring coil.
1
1
S
Do not touch brushes, leads, springs, or brush holders
while equipment is plugged in, to reduce the risk of
electric shock and serious injury.
CAUTION
Do not run pumps dry for more than 30 sec while
checking brushes, to avoid damaging pumps.
H
C
01227-2
01227-6