RS3 RS4 Maintenance 8. Joint #4
74
RS series Maintenance Rev.3
(9) Loosen the Z belt.
Loosen four blots securing the Joint #3 motor unit.
Slide the motor unit toward the end of arm.
4-M4
×
15
+
washer
Joint #3
motor unit
(10) Remove the Joint #3 motor unit from Arm #2.
Remove the bolts securing the Joint #3 motor
unit.
Remove the Z1 pulley from the Z belt.
Pull out the motor unit to remove.
Pulley
Z belt
Joint #3
motor unit
(11) Loosen the U belt.
Loosen the four bolts securing the Joint #4 motor
unit.
Slide the Joint #4 motor unit toward the end of
arm.
3-M4
×
15
+
washer
Joint #4 motor unit
(12) Remove the Joint #4 motor unit from Arm #2.
First, remove the bolts securing the Joint #4
motor unit.
Next, remove the U pulley from the U belt.
Pull out the Joint #4 motor unit to remove.
U pulley
U belt
Joint #4
motor unit
(13) Remove the belt.
Remove the bolts securing the spline plate.
Hold up the spline plate and pull the U belt
upward from the shaft.
U belt
3-M4
×
12
+
washer
Spline plate
