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Dealer Service 27
MAN0764 (11/5/2008)
10. Press bearing (20) over input shaft (5).
11. Slide shims (7, 8 or 22, 23) over input shaft. Install
cap (4 or 21).
12. Check input shaft end float by moving the input
shaft (5) by hand. If end float is higher than 0.004",
insert shim between housing and cap that is
closest to the gear. Repeat until end float is less
than 0.004". Check rotational torque by hand. The
torque should be less than 2.2 lbs-inch.
13. Check that the gear backlash is between 0.015"
and 0.025" at the gear O.D. Adjust backlash by
adding or removing shims (9, 10, 11) from the
output shaft (16).
14.
Apply grease to lower seal lips (15) and press seal
(15) over output shaft (16), using a tube of the
correct diameter. Be sure not to damage the seal lip.
15. Press in housing so that seal is recessed. Install
retaining ring (33).
16. Press in input oil seal (6), using tube of correct
diameter. Be careful not to damage seal lip.
17. Place top cover (26) on top of housing and secure
with six cap screws (25).
18. 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.
19. Remove gearbox from water and dry off with
compressed air. Fill gearbox with SAE 80W or 90W
gear lube to the center of the horizontal shaft or
until oil is between lowest ring and end of dipstick.
Tighten all plugs.
Figure 11. Gearbox (Wing & Center)
2. Lock washer, 10 mm
3. Hex head cap screw, M10 x 1.5P x 30
4. Input cap
5. Input shaft
6. Input oil seal
7. Input cap gasket .10 mm
8. Input cap gasket .25 mm
9. Shim .30 mm
10. Shim .40 mm
11. Shim .50 mm
12. Bearing assembly
(cup and cone)
13. 3/16 x 3 Cotter pin
14. M36 Castle nut
15. Output oil seal
16. Output shaft
17. Output gear
18. Bearing adjustment nut
19. 1/8 x 2-1/2 Cotter pin
20. Bearing assembly (cup and cone)
21. Blank adjusting cap
22. Blank cap gasket .10 mm
23. Blank cap gasket .25 mm
24. Bearing spacer
25. Hex head cap screw,
M10 x 1.5P x 25 mm
26. Inspection cover cap
27. Sealing washer
28. M18 x 1.5P Hex head plug
29. Input shaft spacer
30. Dipstick breather assembly
31. Inspection cover gasket
32. Input gear
33. Retaining ring
**
See Parts page 57 for Model
BW1620XQREV instructions.
(Rev. 8/20/2009)