Adjusting The Drive Nut On The Scrub Brush Lift Actuator - Nilfisk-Advance Adphibian AX 651 Multi EDS Service Manual

Adjusting the Drive Nut on the Scrub Brush Lift Actuator

1. See Figures 32 and 33. On a new
scrub lift actuator motor, remove
(spin-off) the Drive Nut (B) and slide
on the Spring Housing Guide (A).
2. Install the short compression Spring
(C) onto the actuator (lead screw)
shaft.
3. Reinstall the plastic Drive Nut (B) as
shown (with the nut pin pocket away
from the motor).
4. Assemble the remaining parts (long
compression spring, Spring Housing
(D) and mounting hardware).
5. Hold onto the spring housing
assembly and press the rocker
switch to run the drive motor and
retract the spring housing toward the
motor housing (the IN limit).
6. Measure the position of the spring
housing assembly on the actuator
shaft. Manually turn the Spring
Housing Assembly to the appropriate
IN position as shown in the chart on
the preceding page.
7. Hold the spring housing assembly, then press the adapter cord rocker switch to run the drive motor to the OUT
position (wait until the motor stops).
8. Measure the position of the spring housing assembly on the shaft and compare the measurement with the OUT
position shown in the chart.
9. If the measurement doesn't match the dimension shown in the chart,
remove the Adjuster Cover and adjust the OUT position.
10. To increase the travel of the spring housing assembly, turn the
adjuster clockwise. To decrease the travel of the assembly, turn the
adjuster counterclockwise.
Note: Use a 1/2" (13mm) socket to turn the adjuster. Each click
of the adjuster will change the spring housing assembly
travel 1/16 inch (1.6mm).
11. After each adjustment, hold the spring housing assembly, run the
actuator IN and OUT and check both dimensions. After checking that the spring housing limits are set correctly,
replace the Adjuster Cover.
Service Tip: Use the above power cord adapter to help position the spring housing assembly (in or out) for
ease in actuator motor installations.
12. After adjusting the actuator spring housing dimensions, follow the Scrub Brush Lift Actuator Removal section to
reassemble.
Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 77
Figure 32
Adjuster
Cover