Grease Exchange - YASKAWA MOTOMAN-MC2000 II Instructions Manual

9.3.2.2 Grease Exchange

9 Maintenance and Inspection
9.3 Grease Replenishment/Exchange Procedures
Exchange the grease according to the following procedure. (Refer to
fig. 9-4 "S-axis Speed Reducer Diagram" .)
1. Remove the hexagon socket head plug PT1/4 from the grease inlet
and the hexagon socket head plug PT3/8 from the grease exhaust
.
port
• If grease is injected with the plugs on, the grease will leak
inside the motor and may cause a damage. Make sure to
remove the plug 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.
2. Install the grease zerk PT1/4 to the grease inlet.
(The grease zerk is delivered with the manipulator.)
3. Inject the grease through the grease inlet using a grease gun.
– Grease type:
– Amount of grease:
– Air supply pressure of grease pump:
– Grease injection rate:
4. The grease exchange is complete when new grease appears from the
exhaust port. (The new grease can be distinguished from the old
grease by color.)
5. Move the S-axis for a few minutes to discharge the excess grease.
6. 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).
7. Remove the grease zerk from the grease inlet and reinstall the
hexagon socket head plug PT1/4.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 12 N•m
(1.2 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
9-9
HW1483028
Molywhite RE No.00
approx. 6800 cc
0.3 MPa or less
8 g/s or less
HW1483028
46/69