MAINTENANCE MANUAL
89
STE 85357
3.3.1
Arm 2 Cover
The arm 2 cover is secured to Arm 2 and the harness guide with 14 hexagon socket
head cap screws (M3 x 16 x 4 pcs., M4 x 6 x 8 pcs., M4 x 10 x 2 pcs.) and nylon
washers. (It is not necessary to apply Loctite when installing.)
Fig. 3.6 Arm 2 cover (THL500, THL600, THL700)
After the cover is mounted, manually move up and down the ball screw spline shaft
while pressing the brake release switch, and make sure that the ball screw hole for
the arm 2 cover will not interfere with the ball screw stopper.
3.3.2
Base Covers
There are four (4) types of base covers: base front cover, base rear cover, base side
cover and base cover. (It is not necessary to apply Loctite to all the covers when
installing.)
Each of the base front cover and the base rear cover is secured to the base with six
(6) cross truss head screws (M4 x 6). They can be dismounted from the base when
these fastening screws are removed, but do not pull them with force as they are
Socket head bolt
M4 x 10 x 2
Recommended
clamping torque:
1.47 N
・
m
Arm 2 cover
Socket head bolt M3 x 16 x 4
Recommended clamping torque: 1.47 N
・
m
Socket head bolt M4 x 6 x 8
Recommended clamping torque: 1.47 N
・
m
Nylon washer