Motoman PX2750, Manual

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9.2 Maintenance for Manipulator
9-12
HW0480633
Fig. 29 Terminal Box in Manipulator Base Box
9.2.4
Wrist Speed Reducer and Bearing
Check if the three wrist axes move smoothly or not. If the wrist does not move smoothly, con-
tact your Yaskawa representative. Removing and disassembling the wrist to find the faulty
axis will be needed for
repair or replacement of the bearing, the speed reducer, or the sealing
compounds.
9.2.5
Air Sealings for Internal Air Pressure
„ Packing on the motor case
(a) S-, L-, and U-axes
Remove the mounting bolts on the motor case and check the packing where the case
is mounted.
Remove the cover for the cable inlet in the motor case, and check the packing where
the cover is attached. Excessive oil in the air that is used for the internal air pressure
can damage the packing, which result in air leakage. Replace the packing if air leak-
age is found.
Refer to " Fig. 30 S- and L-axes Motor Packings "to " Fig. 32 R-, B-, and T-axes Motor
Packings " for more information on the packing of each axis motor.
To remove the wrist from the U-arm, firmly hold the wrist and remove the fixing bolt. If not,
the wrist may fall down when the fixing bolt is removed.
Terminal box fixing screws
CAUTION