70
34 - Scrub System, Disc
Brush Motor Brushes
Unless you need to remove the motor(s), it is easier to complete this procedure with the motor(s) installed in
the machine As long as you disconnected the main battery connector, you don’t even need to disconnect the
motor connector But if desired, remove the
1 Drain the recovery tank and disconnect the
main battery connector
2 Remove the
3 Remove both scrub brushes
4 Lower the scrub deck as far as you can
5
Important:
Using a marker or paint pen,
mark the alignment
(A)
of the top and
bottom end caps with respect to the motor
housing
(D)
6 If necessary, disconnect the motor electrical
connector
7 Using an 11mm socket, remove the two
screws
(B)
that secure the top cap
(C)
,
through the motor housing
(D)
, and down to
the bottom cap The screws are very long
8 Carefully pry up the top cap
(C)
away from the motor housing
(D)
Note the following:
•
The rotor’s bearing is a light press into the top cap It will come free fairly easily, but care must be
taken to not skew the cap in the process
•
A very light tap on the side of the cap with a plastic deadblow hammer should be enough to loosen
the cap enough to begin prying with a small screw driver
•
Taking care not to damage the aluminum cap, work the small screw driver around the cap enough to
be able to get two medium sized screw drivers in 180
°
apart, and then pry up on both sides evenly
9 Slowly and gently, lift the top cap up until
the 4 brushes clear the commutator and
rotor bearing
For reference, the picture to the right shows the
components of the top cap
(C)
Top Cap
(E)
Bearing Pocket
(F)
Carbon Brush
(G)
Brush Holder
(H)
Coil Spring (Brush Spring)
(J)
Terminal Screw
A
B
C
D
E
F
G
H
J
C