Toro Greensmaster Flex 21, Service Manual, Page: 49 / 150

Greensmaster Flex 21 Traction and Reel Drive System (Rev. C) Page 4 – 21
9. Locate and remove drum spacer (item 11) from each
side of traction drum assembly.
10.Remove traction drum assembly from the mower.
11. If necessary, remove bearing flangettes (item 7) and
bearings (item 8) from machine frame.
Traction Drum Disassembly (Fig. 27)
1. Remove four (4) cap screws (item 9) and lock wash-
ers (item 10) that secure each traction drum to drum
hub/spindle assembly. Separate traction drums from
hub/spindle assembly.
2. Retain drum spindle (item 13) to prevent it from turn-
ing and remove lock nut (item 19). Carefully slide drum
spindle from the drum hub assembly.
3. Remove seal ride spacer (item 18), seals (item 14),
bearings (item 15) and bearing spacer (item 16) from
drum hub.
Traction Drum Assembly (Fig. 27)
1. Assemble hub/spindle assembly (Fig. 28):
A. Press one bearing into drum hub by applying
pressure to outer bearing race. Install bearing
spacer into drum hub and fill cavity between spacer
and drum hub with grease. Press second bearing
into drum hub by applying pressure to outer bearing
race. Make sure that spacer is centered in hub.
B. Pack rear cavity of oil seals with grease. Fill cavity
in hub between bearings and seal positions with
grease.
C. Press seals into hub so the seals are flush with
the hub surface. Lightly grease lip of both seals.
D. Lightly grease the drum spindle and slide spindle
into the hub. Slide seal ride spacer onto spindle and
insert spacer into oil seal. Secure drum spindle to
prevent it from turning and then secure spindle to the
hub with lock nut.
2. Position traction drums to hub/spindle assembly. Se-
cure each traction drum to hub/spindle with four (4) cap
screws and lock washers. Torque cap screws 100 in–lb
(11.3 N–m).
Traction Drum Installation (Fig. 27)
1. Position mower on a level surface. Make sure engine
is OFF. Remove high tension lead from the spark plug.
2. If removed, loosely install bearings (item 8) and
bearing flangettes (item 7) to machine frame. Make sure
that extended race of bearings is positioned to the out-
side of the frame.
1. Ball bearing
2. Seal
3. Seal ride spacer
4. Drum spindle
5. Drum hub
6. Lock nut
Figure 28
4
3
2
1
1
2
5
6
PACK WITH GREASE
PACK
WITH
GREASE
1. RH drum shaft
2. RH drum pulley
3. RH wheel shaft
4. LH drum shaft
5. LH drum pulley
6. LH wheel shaft
Figure 29
LEFT
HAND
THREADS
RIGHT
HAND
THREADS
1
3
2
LEFT
HAND
THREADS
RIGHT
HAND
THREADS
6
4
5
ANTISIEZE
LUBRICANT
LOCTITE #242
ANTISIEZE
LUBRICANT
LOCTITE #242
Traction and Reel
Drive System