T3-B T6-B Maintenance 13. Ball Screw Spline Unit
114 T-B series Maintenance Manual Rev.1
Press and hold the brake release switch to let the shaft down. Be sure to keep enough
space and prevent the end effector hitting any
peripheral equipment.
The brake release switch affects only Joint #3. When the brake release switch is pressed,
the Joint #3 brake is released.
Be careful of the shaft falling while the brake release switch is being pressed because
the shaft may be lowere
d by the weight of the end effector.
Turn OFF the Manipulator.
Detach the wires/tubes from the end
effector and remove the end effector.
Remove the arm top cover and arm bottom cover.
Reference: 7. Covers
mounting the spline
a: 3-M4×12
Remove four screws mounting the spline nut.
b: T3-B: 4-M4×10
T6-B: 4-M4×12
Pull out the following toward the Arm #2 upper side.
Ball screw spline unit Z belt U belt (T3-B) U2belt (T6-B)