9 Maintenance and Inspection
9.3 Notes on Grease Replenishment/Exchange Procedures
9-12
158813-1CD
HW1480080
MH80 Manipulator
9.3.2.2 Grease Exchange
(Refer to Fig. 9-5 “L-Axis Speed Reducer”.)
1. Tilt the L-arm vertical to the ground.
2. Remove the hexagon socket head plug PT1/8 from the grease
exhaust port..
3. Remove the hexagon socket head plug PT1/8 from the grease inlet
a
nd install the grease zerk PT1/8. (The grease zerk is delivered with
the manipulator.)
4. Inject grease into the grease inlets using a grease gun.
– Grease type: Molywhite RE No. 00
–
Amount of grease: 1650 cc
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate: 8 g/s or less
5. The grease exchange is completed when new grease appears in the
e
xhaust port. The new grease can be distinguished from the old
grease by color.
6. Move the L-axis for a few minutes t
o discharge excess grease.
7. Wipe the discharged grease with a clo
th 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).
8. Remove the grease zerk from the grease inlet and reinstall the plug
PT
1/8. 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).
• 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.
If the plug is installed while the grease is being exhausted,
the grease will go inside the motor and may cause a
damage. Ensure that the grease has been completely
exhausted before installing the plug.
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