6
REPLACE THE TWO PLASTIC CAPS AND BEARING FROM
THE DRIVE SCREW
1. Replace the bearing and the long plastic cap on the nose side
of the drive screw.
2. Do not replace the short plastic cap on the motor side of the
drive screw at this time.
3. Stand the arm with the nose side pointed up.
4. Look inside of the collar on the Passport assembly and verify
that an O-ring is present. If not, obtain the O-ring from the kit
and place within the collar.
5. Place the drive screw over the collar.
a. Place the short plastic cap side of the drive screw into the
collar.
b. Carefully work the drive screw into the collar, rocking it
back and forth until it slides into the collar.
c. Once the short plastic cap side of the drive screw slips
into the collar, rest the bearing and long plastic cap side of
the drive screw onto the groove at the nose of the arm.
O-Ring
inside
Collar
Bearing
and Long
Plastic
Cap on
Drive Screw
Short
Plastic
Cap
Trolley Nut
Collar
(located at the
center of the
Drive Screw)
Bearing
Long
Plastic
Cap
Drive
Screw
CENTER THE PASSPOINT NUT
NOTE:
This LA500 arm system is powered by a 24 Vdc motor, but
the motor will run on a 12 Vdc battery at a slower motion and rate
for easier operation of the following steps.
1. Using a 12V battery, move the Passpoint nut to the center of
the Passpoint assembly.
a. Touch the blue and red wires from the arm connector
cable to the positive (+) and negative (–) terminals of the
battery.
b. To spin in the opposite direction, change the polarity of
the blue and red wires to the battery.
2. Use calipers or a scale to measure the distance of each side
of the Passpoint nut to the housing to get as close as
possible to center.
WARNING
Proceeding along this installation without centering the
Passpoint nut can cause the nut to impact against the sides
of the travel area and can damage the Passpoint nut. If the
Passpoint nut is damaged in this procedure, the arm will
need to be replaced.
Passpoint Nut Centered
Passpoint Nut
