Nilfisk-Advance 56315036(28D) Service Manual

Also see for ba 755: Instructions for use Instructions for use Sevice manual Instructions for use

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Nilfisk-Advance 56315036(28D) Service Manual Manual pdf 56 page image

54 - FORM NO. 56043103 - Warrior ™ ST, Warrior ™ AXP / BA 755 seriesELECTRICAL SYSTEMACTUATOR DRIVE NUT ADJUSTMENTThis manual section explains the steps for adjusting the drive nut (spring housing) setting for all the models’ scrub brush lift actuator motor. Reference the chart belowto fi nd the IN & OUT dimensional specifi cation for an actuator motor needing adjustment.Part # Actuator Motor Spring Housing IN Position Spring Housing OUT Position Models56393303 Scrub Brush Lift (ALL) 1/16”(1.6mm) - 3/16”(4.76mm) 4-1/8”(10.47cm) - 4-1/4”(10.8cm) ALL*The “Spring Housing IN/OUT Position” dimensions are measured when completely assembled. Reference points are the gear box step to the edge of the plasticSpring Housing Guide (A) as shown in Figures 3 and 4.General Instructions for All Actuator Motors1 See Figure 2. This shows the special actuator power cord adapter(PN 56407502) that is needed to connect the machine’s batterypack and actuator motor for setting the drive nut limit settings.2 Open the machine battery compartment and disconnect thebattery connector. The battery pack is needed to power the liftactuator motor to properly set the IN & OUT limit switches.3 Connect the actuator motor to be tested to the power cord adapterend. Then connect the alligator clips from the cord adapter (redclip to the positive and black to negative) to battery connectoror battery posts. The rocker switch is used to change the motorrotation in setting the correct drive nut dimension.Instructions for Scrub Brush Lift Actuator Drive Nut Adjustment1 See Figure 3 and 4. On a new scrub lift actuator motor remove (spin-off) the Drive Nut (B) and first slide on the Spring Housing Guide (A), then install the shortcompression Spring (C) onto the actuator (lead screw) shaft. Next reinstall the plastic Drive Nut (B) as shown (with the nut pin pocket away from the motor).Then fi nish assembly of remaining parts (long compression spring, Spring Housing (D) and mounting hardware).2 Hold onto the spring housing assembly and press the rocker switch to run the drive motor and retract the spring housing towards the motor housing (its INlimit).3 Measure the position of the spring housing assembly on the actuator shaft. Manually turn the spring housing assembly to the appropriate IN position shown inthe chart above.4 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).5 Measure the position of the spring housing assembly on the shaft and compare the measurement with the OUT position shown in the chart.6 When the measurement doesn’t match the dimension shown in the chart it is necessary to remove the Adjuster Cover (E) and adjust the OUT position.FIGURE 2FIGURE 37 To increase the travel of the spring housing assembly,turn the adjuster clockwise. To decrease the travel of theassembly, turn the adjuster counter clockwise.NOTE: Use a 1/2” (13mm) socket to turn the adjuster.Each click of the adjuster will change the spring housingassembly travel 1/16 inch (1.6mm).8 After each adjustment, hold the spring housing assembly,run the actuator IN & OUT and check both dimensions.After checking that the spring housing limits are setcorrectly replace the adjuster cover. Service Tip Note:Use the above power cord adapter to help position thespring housing assembly (in or out) for ease in actuatormotor installations.9 After adjusting the actuator spring housing dimensions,follow the Scrub Brush Lift Actuator Removal (Disc orCylindrical) manual section to reassemble.Service Tip: See Figure 4. Note the correct orientation ofthe Spring Housing (D) when installing the complete motorassembly and also run the spring housing assembly to the IN(retracted) position for machine installation.