Company Brush Cutter User Manual
32 Dealer Service
MAN0963 (2/16/2012)
SPLITTER GEARBOX REPAIR - STYLE A
Refer to Figure 15, page 33.
See pages 60 and 61 to determine gearbox style. Style
"A" has removable shaft covers. Style "B" has a top
cover.
Splitter Gearbox Removal From Cutter
1. Disconnect and remove all drivelines from
gearbox.
2. Remove the four cap screws and lock washers that
secure gearbox to cutter, and remove gearbox.
NOTE: Gearbox is heavy: do not attempt to move it
without mechanical assistance.
Splitter Gearbox Disassembly
Refer to Figure 15.
Center Shaft
1. Remove plug from side of gearbox and pour out
the gear oil.
2. Remove seal (6, to be replaced) from the front and
rear of the center shaft (5).
3. Remove front cap (4) and gaskets (8, 9, 10) from
the front and rear of the center shaft (5).
4. Support gearbox in a hand press and push on the
rear of the center shaft.
5. Remove bearing cones (7), and gear (18) from
center shaft (5).
6. Remove bearing cups (7) from housing and cap
using a punch and hammer.
Side Shaft
7. Remove seal (12, to be replaced) from the output
shaft (13).
8. Remove 8 cap screws (3) and side shaft assembly.
9. Remove cotter pin (21), bearing adjustment nut
(20), and gear (19).
10. Support side shaft assembly in hand press. Press
shaft (13) through the cap (11) from the threaded
end of the shaft.
11. Repeat steps 10 through 12 for opposite side shaft.
Inspect Components
12. Inspect gears for broken teeth and wear. Some
wear is normal and will show on the loaded side of
the teeth. Forged gear surfaces are rough when
new. Check that wear pattern is smooth.
13. Inspect shafts for grooves, nicks, or bumps in the
areas where seals seat. Resurface any damage
with emery cloth or replace shaft.
14. Inspect housing and caps for cracks or other
damage.
Splitter Gearbox Assembly
Refer to Figure 15.
1. Clean housing, pay specific attention to areas
where gaskets are installed.
2. Wash housing and all components thoroughly.
3. Select a clean work area to assemble gearbox.
4. Replace all seals, bearings, and gaskets.
5. All parts must be clean and lightly oiled before
assembly.
Side Shaft
6. Insert bearing cups (7) in hub cap(11) using a
round tube of the same size diameter and a hand
press.
7. Press bearing cone (7) on to output shaft (13),
slide output shaft (13) through hub cap (11) and
press bearing cone (7) on to output shaft (13).
8. Slide gear (19) over output shaft (13) and secure
with nut (20) and cotter pin (21).
9. Check end play of shaft by moving it in and out. If
end play is more than 0.012", tighten nut (20).
Repeat process until end play is less than 0.012".
10. Check rotational torque. Torque should be less
than 2.2 lbs-inch gear.
11. Place seal (12) over shaft and press into housing
using a tube of the same diameter. Seal should be
flush with housing when properly installed.
12. Repeat steps 6 through 10 for opposite side shaft.
Center Shaft
13. Insert bearing cups (7) in housing and front cap (4)
using a round tube of the same size diameter and a
hand press.
14. Press spacer (14), gear (18), shims (15, 16, 17)
and bearing cones (7) on to input shaft (5).
15. Slide input shaft (5) through housing and install
gaskets (8, 9, 10) and cap (4).
16. Check end play of shaft by moving it in and out. If
end play is more than 0.012", remove a gasket (8,
9, or 10). Repeat process until end play is less than
0.012".
17. Check rotational torque. Torque should be less
than 2.2 lbs-inch gear.
18. Check gear backlash, backlash should be between
0.006" and 0.016". Adjust the backlash by adding
or removing shims (15, 16, 17) from the input shaft
(5).
19. Place seal (6) over shaft and press into housing
using a tube of the same diameter. Seal should be
flush with housing when properly installed. Repeat
process for opposite end shaft.