Maintenance 8. Joint #4
128 L
S20-B Rev.4
Insert the extension shaft to the reduction
gear unit.
M
ake sure that Joint #4 motor cable is
looking from the front side
inserting the extension shaft, loosely
secure the motor plate on
the Joint #4 motor
bolts (M3×12)
, and loosen the
motor fixing
bolts (M4×70) to secure the
motor loosely.
At this point, m
ake sure that the motor unit
can be moved by hand, and it will not tilt
when pulled.
Before fixing it to the reduction gear unit,
make sure to rotate Joint #4 reduction unit
two or three times from the output side
by
rning shaft or belt.
of the hole for fixing the
, and then tighten the bolts to
the extension shaft on the reduction gear
Hole for fixing the
extension shaft
Joint #4
Reduction Gear Unit
ighten the bolts on the loosely secured
and the motor to fix Joint #4
on the reduction gear unit.
ount the cover of the hole for fixing the extension shaft.
Connect the following connectors.
C
onnectors: BR4, X241, X41
ount the User Plate and the Duct Plate.
For details, refer to Maintenance 3. Covers.
Install the clip band removed in the removal
step (5), bind the cables, and then fix
them.
bend or pull the cables forcibly to allow
unnecessary strain on the cables.
the Arm Top Cover.
For details, refer to Maintenance: 3.1 Arm Top Cover.