MAINTENANCE MANUAL
81
STE 85357
Fig. 2.56 Replacing axis 4 reduction gear (THL300, THL400)
8)
Assemble the new reduction gear, motor and pulley in the reverse order of
Steps 4) to 7) above. Be careful with the phases of the axis 4 motor, the axis 4
reduction gear and the axis 4 motor plate at this time.
9)
Assemble the axis 4 motor assembly and timing belt according to Steps 11)
through 15
) of “Para. 2.5.4, Replacing Axis 4 Timing Belt” above, then mount
Arm 2 cover.
10) Mount the arm 2 cover. Now replacement of Axis 4 Reduction Gear completes.
[Axis 4 drive motor set bolt]
Hexagon socket head cap screw
M4 x 12 x 4 pcs.
(Apply medium strength Loctite.)
(When mounted) recommended
clamping torque: 2.3 Nm
Washer
[Axis 4 reduction gear set bolt]
Hexagon socket head cap screw
M5 x 16 x 4 pcs.
(Apply medium strength Loctite.)
(When mounted) recommended
clamping torque: 6.2 Nm
Axis 4 motor pulley
Washer
Axis 4 motor plate
Hexagon socket head cap screw
M4 x 12 x 6 pcs.
(Apply medium strength Loctite.)
(When mounted) recommended
clamping torque: 4.3 Nm
When mounting, exercise
caution with the phases of
the axis 4 motor and the
axis 4 reduction gear.
Remove the cap.
Coupling bolt (M3)
(When mounted)
recommended clamping
torque: 1.8 Nm
Axis 4
motor
Axis 4 reduction gear
