Grease Exchange - YASKAWA MOTOMAN-MC2000 II Instructions Manual

9.3.4.2 Grease Exchange

9 Maintenance and Inspection
9.3 Grease Replenishment/Exchange Procedures
7. Wipe the discharged grease with a cloth and reinstall the hexagon
socket head plug PT3/8 to the exhaust port.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 23 N•m
(2.3 kgf•m)
8. Remove the grease zerk from the grease inlet and reinstall the
hexagon socket head plug PT1/8.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 4.9 N•m
(0.5 kgf•m)
Exchange the grease according to the following procedure. (Refer to
fig. 9-7 "U-axis Speed Reducer Diagram" .)
1. Make the U-arm horizontal to the ground.
2. Remove the hexagon socket head plug PT3/8 from the grease
exhaust port.
3. Remove the hexagon socket head plug PT1/8 from the grease inlet.
• If grease is injected with the bolt on, the grease will leak
inside the motor and may cause a damage. Make sure to
remove the bolt before the grease injection.
NOTE
• Do not install a joint, a hose, etc. to a grease exhaust port.
Failure to observe this instruction may result in damage to
the motor due to coming off of an oil seal.
4. Install the grease zerk PT1/8 to the grease inlet. (The grease zerk is
delivered with the manipulator.)
5. Inject grease through the grease inlet using a grease gun.
– Grease type:
– Amount of grease:
– Air supply pressure of grease pump:
– Grease injection rate:
6. The grease discharge is complete when new grease appears from the
exhaust port. The new grease can be distinguished from the old
grease by color.
7. Move the U-axes for a few minutes to discharge the excess grease.
8. Wipe the discharged grease with a cloth and reinstall the hexagon
socket head plug PT3/8 to the exhaust port.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 23 N•m
(2.3 kgf•m).
9. Remove the grease zerk from the grease inlet and reinstall the
hexagon socket head plug PT1/8.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 4.9 N•m
(0.5 kgf•m).
If grease is injected with the plug on, the grease will leak
NOTE
inside the motor and may cause a damage. Make sure to
remove the plug before the grease injection
9-13
HW1483028
Molywhite RE No.00
approx.1950 cc
0.3 MPa or less
8 g/s or less
HW1483028
50/69