JUKI RS-1 Maintenance Manual page 62

(10) Remove the screws that secure the Y ball screw nut.
L side
Remove SM6062002TN (4 pcs.).
(11) Remove the lock nut and spacer on the front.
Maintenance Guide
Front side
Lock nut turning
direction
Lock nut
1-53
R side
Before starting the work, move
the HEAD_UNIT to the front.
To replace the ball screw on the
R side, move the HEAD_UNIT to
the L side.
To replace the ball screw on the
L side, move the HEAD_UNIT to
the R side.
Y_BS_CONNECTOR
Remove SM60602002TN (4 pcs.).
After SM60602002TN has been
removed, move the HEAD_UNIT to the
rear.
Replace the ball screw on the opposite
side in the same manner.
∗ Move the HEAD_UNIT to the rear so
that the ball screw nut is not removed
from the Y_BS_CONNECTOR.
After the HEAD_UNIT has been
moved to the rear, hold the shaft
of the ball screw by your left hand
and turn the lock nut by your right
hand to loosen it while pushing the
ball screw toward the rear.
At this time, also remove the
spacer.