YASKAWA MOTOMAN-HP20 Instructions Manual page 48

9.2 Notes on Maintenance Procedures
7. Wipe the grease exhaust port with a cloth and reinstall the plug. Tighten the plug with
a tightening torque of 5 N·m (0.51 kgf·m). Apply Three Bond 1206C on the thread part
of the plug.
 Grease Exchange
(Refer to "Fig. 25 L-axis Speed Reducer Diagram".)
Exchange the grease according to the following procedure:
1. Posture the L-arm vertical to the ground.
2. Remove the plug and the screw from grease exhaust port and grease inlet respec-
tively.
NOTE If grease is injected with the plug on, the grease will go inside the motor and may damage
it. Never fail to remove the plug before the grease injection.
3. Install the grease zerk A-MT6X1 on the grease inlet. (The grease zerk A-MT6X1 is
delivered with the manipulator.)
4. Inject the grease into the grease inlet using a grease gun.
The grease exchange is completed when new grease appears in the grease exhaust
port. The new grease can be distinguished from the old grease by color.
5. Move the L-axis for a few minutes to discharge the excess grease.
6. Remove the grease zerk on the grease inlet and reinstall the hexagon socket head cap
screw M6. Tighten the screw with a tightening torque of 5 N·m (0.51 kgf·m). Apply
Three Bond 1206C on the thread part of the screw.
7. Wipe the grease exhaust port with a cloth and reinstall the hexagon socket head plug.
Tighten the plug with a tightening torque of 5 N·m (0.51 kgf·m). Apply Three Bond
1206C on the thread part of the plug.
Grease type: Molywhite RE No.00
Amount of grease: approx. 560 cc
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