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Dealer Service 33
MAN0571 (Rev. 6/15/2007)
13. Inspect vertical and horizontal shafts for grooves,
nicks, or bumps in the areas where the seals seat.
Resurface any damage with emery cloth.
14. Inspect housing and caps for cracks or other
damage.
Assemble Gearbox (Figure 15)
1. Clean housing, paying specific attention to areas
where gaskets will be installed.
2. Wash housing and all components thoroughly.
Select a clean area for gearbox assembly. Replace
all seals, bearings, and gaskets. All parts must be
clean and lightly oiled before reassembling.
3. Press bearing (18) in left side of gearbox housing
using a round tube of the same diameter and a
handpress.
4. Place gear (19) inside of gearbox housing.
5. Insert output shaft (14) through opening in right
side of gearbox, gear (19), and bearing (18) on left
side of housing.
6. Place second bearing (18) over output shaft on
right side and press into housing, using a round
tube of the same diameter and a handpress.
7. Install shim (17) and snap ring (16) to right side of
housing to secure output shaft in housing.
8. Place seal (15) over output shaft on right side and
press into housing, using a round tube of the same
diameter and a handpress.
9. Install shim (17) and snap ring to left side of
housing.
10. Place seal (15) over output shaft on left side and
press into housing, using a round tube of the same
diameter and a handpress.
11. Press bearings (11) into input housing (12), using a
round tube of the same diameter and a handpress.
12. Assembly bearing (13), shim (17), gear (8), shim
(7), and castle nut (6) to input shaft (1).
13. Align groove in castle nut (6) and hole in end of
shaft and insert cotter pin (5).
14. Insert input shaft assembly into gearbox housing
and align teeth of the two gears.
15. Place input housing (12) over input shaft (1) and
secure into position using cap screws (10).
16. Place seal (2) over input shaft on cover and press
into housing, using a round tube of the same
diameter and a handpress.
17. 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.
18. Remove gearbox from water and dry off with
compressed air. Add SAE 80W or 90W EP oil until
it runs out of level hole in front cover. Tighten all
plugs.
Reinstall Gearbox
NOTE: Gearbox is heavy: do not attempt to move
without mechanical assistance.
1. Install flex coupler driveline between side
gearboxes and center gearbox.
2. Set gearbox on cutter and fasten with bolts and
nuts. Torque bolts to 300 lbs-ft.
SIDE DRIVE SERVICE
Figure 16. Side Drive Assembly
The drives between the center and side gearboxes
contain rubber shock-absorbing discs. To service or
remove the side drives or remove a gearbox, the
flexible coupling must be disassembled. See page 25
for rubber disk replacement.
Remove end yokes by removing nuts (9) and sliding
bolt (8) inward to clear yoke. Do not remove bolt unless
rubber disks (5) are to be serviced. Remove complete
center section by lifting straight up on center shaft (2).
The outer yoke can be slid off gearbox shaft. The inner
yoke is held by two set screws (11).
Reassemble shaft as shown in Figure 16. End yokes (3
& 4) do not bolt directly to center shaft (2). Use the
special formed washer (6) and bushings (7) between
the rubber disks (5) and under bolt head or nut near
rubber disc. Tighten nuts (9) and bolts (8) to 85 lbs-ft.
Tighten set screw (11).
NOTE: Crossbar must be re-timed anytime a crossbar
or a side drive is disconnected. (See page 35.)
5. Rubber disk
6. Shaped washer
7. Bushing
8. Bolt
9. Lock nut
11. Set screw
2. Shaft
3. Inner yoke
4. Outer yoke