YASKAWA MOTOMAN-MH80, Instructions Manual, Page: 51 / 77

9-9
158813-1CD
HW1480080
MH80 Manipulator
9 Maintenance and Inspection
9.3 Notes on Grease Replenishment/Exchange Procedures
2. Remove the hexagon socket head plug PT1/4 from the grease inlet
and install the grease zerk PT1/4. (The grease zerk is delivered with
the manipulator.)
3. Inject grease into the grease inlet using a grease gun.
– Grease type: Molywhite RE No. 00
– Amount of grease: 520 cc
(1040 cc for 1st supply)
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate: 8 g/s or less
4. Move the S-axis for a few minutes to discharge excess grease.
5. Wipe the discharged grease with a cloth and reinstall the plug PT1/8
on the grease exhaust port. Apply Three Bond 1206C to the thread
part of the plug, and tighten the plug with a tightening torque of 4.9
N
·
m (0.5 kgf
·
m).
6. Remove the grease zerk from the grease inlet and reinstall the plug
PT1/4. Apply Three Bond 1206C to the thread part of the plug, and
tighten the plug with a tightening torque of 12 N
·
m (1.2 kgf
·
m).
9.3.1.2 Grease Exchange
(Refer to Fig. 9-4 “S-Axis Speed Reducer” .)
1. Remove the hexagon socket head plug PT1/8 from the grease
exhaust port.
2. Remove the hexagon socket head plug PT1/4 from the grease inlet
and install the grease zerk PT1/4. (The grease zerk is delivered with
the manipulator.)
3. Inject grease into the grease inlet using a grease gun.
– Grease type: Molywhite RE No. 00
– Amount of grease: 2600 cc
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate: 8 g/s or less
4. The grease exchange is completed when new grease appears in 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 excess grease.
NOTE
• If grease is injected with the plug on, the grease will go
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 the grease exhaust
port. Failure to observe this instruction may result in
damage to the motor due to coming off of an oil seal.
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