FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100 -
21
SCRUB BRUSH SYSTEM
FRONT
Q
P
L
T
M
N
O
K
I
R
S
J
SCRUB BRUSH MOTOR REMOVAL (DISC)
1
Follow steps 1-10 of the
Scrub Brush Deck Removal (Disc)
section.
2
See Figure 3. Remove the scrub brushes from the Brush Holders
(I)
.
3
Remove the (3)
(J)
Screws from each Thermoid Disk (flexible coupler)
(K)
and remove the Brush Holders
(I)
from both
(L)
Hubs. Note: Use
a 13 mm socket wrench to remove Screws
(J)
.
4
Remove all (8) of hardware items
(M, N & O)
that secure the Gear Case Mount Brackets
(P)
to the scrub deck plate.
5
Remove the Gearbox / Motor Assembly
(Q)
from the scrub deck plate by pulling the assembly straight up.
6
Remove the (6) socket head cap screws securing the gearboxes to the brush motor and separate.
7
Re-assemble in reverse order and test for proper operation.
Note:
The proper brush motor installation position is where the two cable
mounting bolts (wiring connections) face the front and right side on the scrub deck platform.
FRONT
R
L
SCRUB BRUSH GEARBOX REMOVAL (DISC)
FIGURE 3
revised 10/01
Follow steps 1-10 of the
Scrub Brush Deck Removal
(Disc)
section and steps 1-6 of the
Scrub Brush Motor
Removal (Disc)
section.
1
See Figure 3. Remove the hardware items
(R & S)
that secure the Hub
(L)
to the output shaft on each
gearbox. Then pull the hub from the shaft and save
the key.
2
Remove the (3)
(T)
Screws and separate the
Mount Bracket
(P)
from the gearbox that needs
replacement.
3
Remove the (3) socket head cap screws securing
the gearbox that needs replacement and separate
from the brush motor.
4
Re-assemble in reverse order and test for proper
operation.
Note:
Apply a small amount of grease
or “Never Seize” to the gear box output shaft when
reinstalling the drive Hub(s)
(L)
.
Note:
The gearbox output shaft rotates the brush holders
in the opposite direction of other Nilfisk-Advance auto
scrubbers (see below).
