30 Dealer Service
MAN0826 (8/31/2010)
Leakage can occur at the vertical or horizontal gaskets
and shaft seals.
Leakage at the horizontal gasket or seal can be
repaired without removing the gearbox from the cutter.
Seal Installation
NOTE:
Proper seal installation is important. An improp-
erly installed seal will leak.
1.
Clean area in housing where seal outer diameter
(OD) seats. Apply a thin coat of Permatex.
2.
Inspect area of shaft where seal seats. Remove
any burrs or nicks with an emery cloth.
3.
Lubricate gear shaft and seal lips.
4.
Place seal squarely on housing, spring-loaded lip
toward housing. Select a piece of pipe or tubing
with an OD that will sit on the outside edge of the
seal but will clear the housing. Tubing with an OD
that is too small will bow seal cage and ruin seal.
5.
Carefully press seal into housing, avoiding
distortion to the metal seal cage.
Figure 18
. Seal Installation
Figure 19
. Gearbox Assembly
Vertical Shaft Repair
(Figure 19)
1.
Disconnect and remove the driveline from the
gearbox.
2.
Remove vent plug (24) and siphon gear lube from
housing through this opening.
3.
Remove gearbox stand from mower deck.
4.
Remove gearbox and pulley from gearbox stand.
1. Seal
2. Pipe or tube
3. Seal seat
4. Casting
NOTE:
Pipe or tube must press at outer edge of seal.
Incorrect
Installation
1. Crown gear
2. Gearbox housing
3. Input shaft
4. Output shaft
5. Gear pinion
6. Bearing
7. Bearing
8. Protective flat washer
9. Cotter pin
10. Snap ring
11. Snap ring
12. Spacer
13. Shim kit
14. Castle nut
15. Castle nut M24 x 2
16. Shim kit
17. Flat washer
18. Oil seal (40 x 80 x 12)
19. Oil seal (35 x 72 x 10)
20. Cap
21. Snap ring
22. Top cover
23. Bolt M8 x 14mm
24. Breather plug
25. Cotter pin
26. Bearing
27. Ball bearing
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