Kubota ZD221-48 Workshop Manual page 258

ZD221 , WSM ROTARY MOWER
Gear Box and Mower Belt
1. Remove the mower deck from the machine.
2. Remove the left and right hand shield from the mower deck.
3. Clean around the gear box.
4. Remove the belt from the tension pulley.
5. Remove the right hand bracket which mounts the gear box to the
mower deck and slip the belt over the top of the gear box.
6. To install a new belt, reverse the above procedure.
(When reassembling)
o
Install the reamer screws at their original positions as shown in
the figure.
79 to 90 N·m
nghtening torque Gear box mounting screw 8.0 to 9.2 kgf·m
58 to 66 Ibf·ft
3GZAAAIMP006A
(1) Gear Box (3) Tension Pulley
(2) Gear Box Mounting Screw
(4) Mower Belt
W1012961
Disassembling Gear Box
1. Unscrew the drain plug, and drain the gear box oil.
2. Remove the center pulley (23) with a puller, and remove the
feather key (24) on the bevel gear shaft.
3. Remove the gear box caps (7), (18).
4. Remove the oil seal (1), external snap ring (2) and shim (3).
5. Remove the screw (17), washer (16) and tap out the pinion shaft
(5) with ball bearing (4).
6. Remove the bevel gear (6) and pinion shaft collar (12).
7. Remove the internal snap ring (15) and shims (14).
8. Remove the ball bearing (13).
9. Remove the external snap ring (8), and draw out the bevel gear
shaft (22).
10.Remove the bevel gear (9) with ball bearing (10).
(When reassembling)
o
Replace the oil seals (1), (21) and gear box caps (7), (18) with
newones.
o
Check the backlash and turning torque.
If not proper, adjust with the shims (3), (11) and (14).
(1) Oil Seal (13) Ball Bearing
(2) Internal Snap Ring (14) Shim
(3) Shim (15) Internal Snap Ring
(4) Ball Bearing (16) Washer
(5) Pinion Shaft (17) Screw
(6) 19T Bevel Gear
(18) Gear Box Cap
(7) Gear Box Cap
(19) Gear Box
(8) External Snap Ring
(20) Breather
(9) 15T Bevel Gear (21) Oil Seal
(10) Ball Bearing (22) Bevel Gear Shaft
(11) Shim (23) Center Pulley
(12) Pinion Shaft Collar
(24) Feather Key
W1018511
6-S12