MAINTENANCE MANUAL
161
STE 85357
4.4.8
Mounting Axis 3 Motor
1)
Perform key alignment, using the new axis 3 motor and pulley. At this time, no
clearance should exist between the motor shaft and pulley.
2)
Secure the axis 3 motor to the axis 3 motor plate with four (4) hexagon socket
head bolts (M4 x 10) and washers. Be careful with the mounting phases of the
axis 3 motor and the axis 3 motor plate at this time.
3)
Mount the key and the axis 3 motor pulley, and then secure them with the
holding plate, washers and one (1) hexagon socket head bolt (M3 x 8).
!
CAUTION
• Perform key alignment very carefully. If there is a clearance between the motor shaft and
pulley, positioning accuracy will drop and the life of the parts will shorten.
Fig. 4.29 Mounting axis 3 pulley and plate (THL800, THL900, THL1000)
4)
Hang the axis 3 motor timing belt to the arm 3 motor pulley, and temporarily
secure the axis 3 motor plate to Arm 2 with four (4) flange head bolts (M4 x 10,
application of Loctite not necessary). Be careful with the motor mounting
phase at this time. Apply tension using two (2) axis 3 tension adjustment bolts
(M4 x 16, application of Loctite not necessary). (For the belt replacement
procedures and tension adjustment values, see
“Para. 4.5.3, Replacing Axis 3
Washer
Holding plate
Pulley
Key
Hexagon socket head bolt
M3 x 8 x 1 pc.
(Apply medium strength Loctite.)
[Axis 3 drive motor mounting bolt]
Hexagon socket head bolts
M4 x 10 x 4 pcs.
(Apply medium strength Loctite.)
Axis 3 motor plate
Fasten so that the motor
lead wire faces the
direction of the arrow.
Be sure to secure the tension
adjustment bolt so that it faces
the direction of the arrow.
Axis 3 motor
Washer