YASKAWA MOTOMAN-HP20 Instructions Manual page 50

9.2 Notes on Maintenance Procedures
Grease Exchange

(Refer to "Fig. 26 U-axis Speed Reducer Diagram".)
Exchange the grease according to the following procedure:
1. Posture the U-arm as shown in "Fig. 26 U-axis Speed Reducer Diagram".
2. Remove the hexagon socket head cap screw on the grease exhaust port.
If grease is injected with the screw on, the grease will go inside the motor and may damage
NOTE
it. Never fail to remove the screw before the grease injection.
3. Remove the hexagon socket head plug PT1/8 on the grease inlet and install the grease
zerk A-MT6X1.
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 U-axis for a few minutes to discharge the excess grease.
6. Remove the grease zerk and reinstall the hexagon socket head plug on the grease
inlet. 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.
7. Wipe the grease exhaust port with a cloth and reinstall the hexagon socket head cap
screw. 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.
Grease type: Molywhite RE No.00
Amount of grease: approx. 320 cc
9-12