Toro Greensmaster Flex 21, Service Manual

Page: 60 / 150

Greensmaster Flex 21 Traction and Reel Drive System (Rev. C) Page 4 – 32
13.Gearbox seals can be removed as follows:
A. Using a 1/4” thick, 3” X 3” square piece of steel,
make a seal removal tool as shown in Fig. 46.
B. If seal is secured with retaining ring, remove re-
taining ring. Slide seal removal tool over shaft.
C. Using the tool as a template, locate, mark and drill
two 7/64” (.109”) diameter holes in outer face of seal.
D. Screw two No. 8 (.164” diameter) by 3/4” long
self–tapping screws into outer face of seal.
E. Install two 1/4–20 by 1” long cap screws into seal
removal tool and alternately tighten cap screws to
pull seal out of gearbox. Discard removed seals.
NOTE: Seals will be destroyed when removed. Do not
re–use seals that have been removed.
14.Carefully inspect all internal gears, shafts, washers,
bushings and bearings. Replace any worn, chipped,
bent or cracked parts.
Gearbox Assembly (Fig. 40)
1. Replace any removed oil seal, bushing or bearing in
either the gearbox cover or base. Note: The oil seal for
the reel drive clutch shaft is a red/orange color to differ-
entiate it from other similarly sized seals in the gearbox.
Oil seals should be installed flush or slightly recessed in
seal bore. If seal is secured with retaining ring, install re-
taining ring. If clutch shaft caged needle bearing in gear-
box base is replaced, closed end of bearing should be
flush with outside of gearbox base after installation.
2. Thoroughly apply grease to lip seals in both the gear-
box base and cover.
3. If clutch shaft was disassembled, use Figure 45 as
a guide to install components to clutch shaft. Rotate
clutch fork to allow clutch shaft assembly to be posi-
tioned into gearbox base. Place thrust washer on cover
end of shaft.
4. Place link to fork shaft and bellcrank. Secure link with
two retaining rings.
5. Lubricate long differential axle shaft and slide differ-
ential into bushing and seal in gearbox base.
6. If disassembled, use Figure 44 as a guide to install
components to planetary assembly. If input gear was re-
moved, install with shallow web casting toward sun
gear. Install planetary assembly (with brake band
installed) into gearbox engaging gears of differential as-
sembly. Note: If gearbox is still attached to engine, park-
ing brake lever on engine side of gearbox (with cable)
should be installed onto brake shaft as planetary as-
sembly is installed into gearbox.
1. Sun gear
2. Input gear
3. Carrier assembly
4. Ring gear
5. Traction drum
6. E–ring
7. Woodruff key
8. Planet gear (3 used)
9. Thrust washer
10. Wave washer (if used)
11. Thrust washer
12. E–ring
Figure 44
12
5 11
4
1
8
7
2
6
9
3
Brake band location
Shallow web casting
10
1. Clutch shaft
2. Clutch gear/bearing
3. Cone clutch hub
4. Retaining ring
5. Thrust washer (sm ID)
6. Thrust bearing
7. Thrust washer (thick)
8. Thrust washer (thin)
9. Plunger hub/bearing
10. Snap ring
11. Square key (2 used)
Figure 45
4
5 6
7
2
3
8
6
1
9
10
11
11
Original
Version B Version A
Note: 3 styles of cone clutch hubs have been used on Flex
21 machines. On gearboxes with version B cone clutch
hub, items 7 and 8 are identical
Figure 46
.625”
.625”
1.05” 1.05”
.188” dia. (2)
.75” dia.
UNC (2)
Tap 1/4–20