9
Maintenance and Inspection
9.3
Grease Replenishment/Exchange Procedures
9-11
HW1483028
HW1483028
9.3.3.2 Grease Exchange
Exchange the grease according to the following procedure. (Refer to
fig. 9-5 “L-axis Speed Reducer Diagram”
1. Make the L-arm vertical 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.
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:
Molywhite RE No.00
– Amount of grease:
approx. 1700 cc
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate:
8 g/s or less
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 L-axis 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 plugs, 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 to the grease inlet.
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).
NOTE
• If grease is injected with the exhaust plug on, the grease
will leak inside the motor and may cause a damage. Make
sure to remove the plug before the grease injection.
• 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.
NOTE
If grease is injected with the plug on, the grease will leak
inside the motor and may cause a damage. Make sure to
remove the plug before the grease injection
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