Service Manual

Greensmaster Flex 18/21Traction and Reel Drive System Page 4 – 20
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. 27.
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
tapped holes in seal removal tool and alternately
tighten cap screws to pull seal out of gearbox. Dis-
card removed seals.
NOTE: Gearbox seals will be damaged when removed.
Do not re–use seals that have been removed.
14.Carefully inspect all internal gears, shafts, washers,
bushings and bearings. Replace all worn or damaged
components.
Assembly (Fig. 21)
1. Replace all removed oil seals, bushings and bear-
ings in the gearbox cover and base. Note: The oil seal
for the reel drive clutch shaft is a red/orange color to dif-
ferentiate it from other similarly sized seals in the gear-
box. Oil seals should be installed flush or slightly
recessed in seal bore. If seal is secured with retaining
ring, install retaining ring. If clutch shaft caged needle
bearing in gearbox base is replaced (item 3), closed end
of bearing should be flush with outside of base after
installation.
2. Thoroughly apply grease to seal lips in both the gear-
box base and cover.
3. If clutch shaft was disassembled, use Figure 26 as
a guide to install components to clutch shaft. Install
clutch shaft assembly into gearbox base and rotate
clutch fork to plunger hub. Place thrust washer on cover
end of shaft.
4. Attach link to fork shaft and bellcrank. Secure with
two (2) retaining rings.
5. Lubricate long differential axle shaft and carefully
slide differential assembly into bushing and seal in base.
6. If planetary assembly was disassembled, use Figure
25 as a guide to install components to planetary assem-
bly. If input gear was removed, install with shallow web
casting toward sun gear.
7. Install planetary assembly (with brake band
installed) into gearbox, engaging gears of differential
assembly. Note: On Flex 21, if gearbox is still attached
to engine, parking brake lever on engine side of gearbox
(with cable) should be installed onto brake shaft as plan-
etary assembly 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
11. Thrust washer
12. E–ring
Figure 25
12
5
11
4
1
8
7
2
6
9
3
Brake Band
Shallow web casting
10
Location
Traction Band
Location
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
8. Plunger hub/bearing
9. Snap ring
10. Square key (2 used)
Figure 26
4
5
6
7
2
3
7
6
1
8
9
10
10
Figure 27
.625”
.625”
1.05” 1.05”
.188” dia. (2)
.75” dia.
UNC (2)
Tap 1/4–20
SEAL REMOVAL TOOL