Upright SB60 Service & Parts Manual page 27

3.10 TORQUE HUBS
Note: Change fluid in torque hubs after the first 50
hours of operation. Change every 1000 hours
thereafter.
Changing Fluid
NOTE: It is not necessary to remove torque hub to
change fluid.
1. Raise axle using an Eight ton hydraulic jack. Place
Eight ton jackstands under each end of axle.
2. Remove wheel and rotate torque hub so drain plug
on side is at bottom of hub.
3. Remove drain plugs at bottom of hub and front
cover and drain oil from unit.
4. Rotate hub so plug opening in front cover is slightly
above half full position and side plug opening is at
the top.
5. Fill unit with 90 wt. gear oil until oil comes out front
plug opening (torque hub must be 1/2 full).
6. Replace plugs.
7. Install wheel and lower machine to the ground.
Torque Hub Removal
1. Park the work platform on firm level ground and
block the wheels to prevent the work platform from
rolling.
2. Disconnect battery negative terminal.
3. Loosen the wheel lug nuts on the torque hub to be
removed.
4. Raise the axle of the work platform using a 8-ton jack.
5. Position two 8-ton jack stands under the axle to
prevent the work platform from falling if the jack fails.
6. Remove the wheel nuts and wheel.
7. Disconnect hydraulic brake line from brake.
SB60 Work Platform
Maintenance
8. Mark and remove hoses from drive motor.
9. Remove mounting bolts from drive motor.
10. Separate drive motor from brake. Discard gasket.
11. Separate brake from torque hub. Discard gasket.
12. Remove 1/2-20 nuts and washers from torque hub.
13. Remove torque hub.
NOTE: Torque all hardware to torques listed on
page 3-28 unless otherwise specified.
1. Install the torque hub using hardware previously
2. Using SAE 90W weight gear lube fill torque hub.
3. Install new gasket and brake.
4. Install new gasket and drive motor.
5. Secure assembly using washers and bolts.
6. Connect hydraulic brake lines.
7. Connect hoses to drive motor.
8. Install wheels. Torque lug nuts to 160ft. lbs. (217 Nm).
9. Bleed brake lines if necessary.
10. Remove jack stands and lower rear end.
11. Connect battery terminal.
12. Operate machine and check for proper operation of
Clean all fittings before disconnecting the
hose assemblies.
Plug all port holes and hose assemblies
IMMEDIATELY to prevent contamination
from dust and debris.
Installation
removed.
Torque hub must be half full.
torque hub. Check function of brake.
Section
3.10
3-13