Dealer Service 31
MAN0577 (6/29/2007)
10. Secure snap ring (5) on input shaft (4) if not
already secure.
11. Place gear (1a or 1b) through top of housing and
align gear (1a or 1b) and gear (1a or 17) so that
gear teeth are a match.
12. While holding gear (1a or 1b) in place, slide input
shaft (4) through gear (1a or 1b) and bearing (2).
Align splines on shaft (4) and gear (1a or 1b). Slide
spacer (18) over input shaft (4) and press bearing
(2) onto input shaft (4), using a round tube of the
correct diameter and a hand press.
13. Slide shim (6) over input shaft (4) and secure with
snap ring (5).
14. Check input shaft end float by moving the input
shaft (4) by hand. If end float is higher than 0.012",
insert shim between input shaft (4) and rear
bearing (2). Repeat until end float is less than
0.012". Check rotational torque by hand. The
torque should be less than 2.2 lbs-inch.
15. Check that the gear backlash is between 0.006"
and 0.016". You should not have to adjust the
backlash.
16. Press in input oil seal (3), using tube of correct
diameter. Be careful not to damage seal lip.
17. Press oil cap (16) on to cover the rear of housing,
using a tube of the correct diameter.
18. Place top cover (20) on top of housing and secure
with six cap screws (21).
19. Check gearbox housing for leaks by plugging all
holes except one. Apply 4 psi compressed air and
immerse the gearbox in water to verify that there
are no leaks.
20. Remove gearbox from water and dry off with
compressed air. Add SAE 80W or 90W EP oil until
it runs out of side level hole. Tighten all plugs.
Reinstall Gearbox
NOTE: Gearbox is heavy: do not attempt to move
without mechanical assistance.
1. Set gearbox on cutter and fasten with bolts and
nuts. Torque bolts to 300 lbs-ft.
2. Attach crossbar (Crossbar Installation, page 35).
Figure 14. Side Gearbox Assembly
1a. Crown gear, 21T (TS1680)
1b. Crown gear, 22T (TS1680Q)
2. Input bearing
3. Oil seal (Horizontal shaft)
4. Input shaft
5. Snap ring
6. Shim, 70.3 x 84.7
7. Snap ring, 50 x 47 x 2
8. Castle nut, M40 x 1.5
9. Shim, 50.3 x 70.3
10. Bearing, cup & cone
11. Protective seal
12. Oil seal (Vertical Shaft)
13. Bearing, cup & cone
14. Output shaft
15. Cotter pin
16. Cap
17. Gear pinion (TS1680Q)
18. Shim, 45.3 x 2.5
19. Shim, 40.3 x61.7
20. Top cover
21. Cap screw 8mm x 25 (8.8)
22. 3/8 NPT Solid plug
23. Castle nut
24. Cotter pin, 1/4 x 2-1/4
