Epson T-B Series - Page 78

T3-B T6-B Maintenance 9. Joint #1
66 T-B series Maintenance Manual Rev.1
(8)
Perform an alignment of the reduction gear
units.
Mount the supplied screws for alignment (×2)
on the reduction gear units.
2-M3×30
Grab the alignment screws by hand and rotate
the
elliptic cam bearing three times clockwise.
Then, rotate three times counterclockwise.
Screw
for alignment
T3-B
Joint #1
motor unit
Motor
mounting
screw
Screw
for alignment
Joint #1
motor unit
T6-B
(9)
Tighten the motor mounting screws which
secured temporarily to secure the motor.
Loosely fasten all
bolts in a crisscross pattern so
that the bolts will be fastened evenly.
T3-B: 4-M4×15+small washer
T6-B: 4-M4×15
Then, using a torque wrench, tighten each bolt
securely in a crisscross pattern at the torque
specified below.
Tightening torque:
M4: 5.5 ± 0.25 N·m
(10)
After mounting the motor, unscrew the supplied screws for alignment (×2) from the
reduction gear units.
2-M3×30
(11)
Apply grease to the inside of the flex gear.
Apply grease to the same height as the end face
of the
elliptic cam bearing.
Grease volume
T3-B: SFB No.1: 13 g
T6-B: SFB No.1: 16g
Grease
End face of
elliptic cam
bearing
(12)
Mount the Joint #1 unit to the base.
Secure the Joint #1 motor cables facing
toward the back of the base.
(13)
Set the O
-
ring (between reduction gear units and Arm #1) removed in the removal
step (10) into the O
-ring groove of the arm.
Replace O
-ring to new one if there is swelling, scratch, or wear.