Woods BATWING BW15.50E Manuel De L'opérateur page 19

SPLITTER GEARBOX REPAIR
Removal from Cutter
1.
Disconnect and remove all drivelines from gearbox.
2.
Remove the four cap screw and lock washers that secure gearbox to
cutter, and remove gearbox.
NOTE:
Gearbox is heavy: do not attempt to move it without mechani-
cal assistance.
Disassembly
Center Shaft
1.
Remove plug from side of gearbox and pour out the gear oil.
2.
Remove seal (11, to be replaced) from the front and rear of the center
shaft (14).
3.
Remove snap ring (10) and shim (12) from the front and rear of the
center shaft (14).
4.
Support gearbox in a hand press and push on the rear of the center shaft.
5.
Remove bearing (13) from center shaft (14).
6.
Remove six cap screws (20) and top cover (21) from the gearbox
housing.
7.
Remove gear (17) and bearing (16).
8.
Snap ring (15) does not have to be removed from shaft (14) unless it is
damaged.
Side Shaft
9.
Remove seal (2, to be replaced) from the output shaft (1).
10.
Remove snap ring (4) and shim (8) from output shaft (1).
11.
Support gearbox in hand press. Using a punch through the front opening
of the gearbox and, push shaft (1) and bearing (5) out the backside of
housing.
12.
Remove gear (6) from inside housing.
13.
Remove bearing (7) and shim (8) by using a hammer and punch through
front opening of the gearbox and force them out the backside of the
housing.
14.
Repeat steps 7 through 11 for opposite side shaft.
Inspect Components
15.
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.
16.
Inspect shafts for grooves, nicks, or bumps in the areas where seals seat.
Resurface any damage with emery cloth or replace shaft.
17.
Inspect housing and caps for cracks or other damage.
Assembly
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.
MAN1246 (12/14/2017)
(Figure 14) Side Shaft
6.
Insert bearing (7) and shim (8) in housing using a round tube of the same
size diameter and a hand press.
7.
Place gear (6) inside the housing and slide output shaft (1) through gear
(6) and into bearing (7).
8.
Slide bearing (5) and shim (8) over output shaft. Secure with snap ring
(4).
9.
Check end play of shaft by moving it in and out. If end play is more than
.30 mm (0.012"), insert another shim (8) between snap ring and bearing.
Repeat process until end play is less than .30 mm (0.012").
10.
Check rotational torque. Torque should be less than .25 Nm (2.2 lbs-inch)
gear.
11.
Place seal (2) 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.
Place gear (17) inside housing and slide center shaft (14) through the
gear from the front of the housing.
14.
Slide bearings (16 & 13) and shims (12) over each end of the center shaft
(14). Secure bearings into position using snap rings (10).
15.
Check end play of shaft by moving it in and out. If end play is more than
.30 mm (0.012"), insert another shim (12) between snap ring and
bearing. Repeat process until end play is less than .30 mm (0.012").
16.
Check rotational torque. Torque should be less than .25 Nm (2.2 lbs-inch)
gear.
17.
Check gear backlash, backlash should be between .15 mm to .41 mm
(0.006" to 0.016"). You should not have to adjust for backlash.
18.
Place seal (11) 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.
Check Gearbox
1.
Place top cover (21) on housing and secure into position using six cap
screws (20).
2.
Check gearbox for leaks by: plugging all holes except one, applying 27.6
kPa (4 psi) of compressed air, and immersing gearbox in water. Verify
gearbox does not leak.
NOTE:
Excessive air pressure will damage seals.
3.
Remove gearbox from water and dry off.
4.
Remove upper plug (3) on right side of housing. Add SAE 80W or 90W
EP oil until it runs out side level hole. Replace plug.
5.
Install breather (18) in top cover.
Reinstallation on Cutter
NOTE:
Gearbox is heavy: do not attempt to move it without mechanical
assistance.
1.
Place gearbox on cutter and secure into position using four cap screws
and lock washers.
2.
Torque hardware to 407 Nm (300lbs-ft).
3.
Attach all drivelines to gearbox.
4.
Install all shields.
Dealer Service 19