Manitowoc National Crane NC1400H - Maintenance

National Crane Published 10-30-2014 Control # 040-09 2-15
1400H OPERATOR AND SERVICE MANUAL OPERATING CONTROLS
Maintenance
Outrigger Cylinder Length Sensor
Remove
1. Fully retract outriggers.
2. Remove outrigger box cover bracket (1, (Figure 4)).
3. Disconnect spring clip (2, (Figure 4)) from its attaching
point on outrigger beam.
4. Disconnect electrical connector (3, (Figure 4)) at string
potentiometer.
5. Remove screws securing string potentiometer, (4,
(Figure 4)).
6. Remove string potentiometer (5, (Figure 4)).
Install
1. Fully retract outriggers.
2. Using screws (4, (Figure 4)) mount the string
potentiometer to the outrigger box cover bracket.
3. Connect electrical connector (3, (Figure 4)) to string
potentiometer.
4. Attach spring clip (2, (Figure 4)) to attaching point on
outrigger beam.
5. Calibrate sensor; refer to Calibrate, page 15.
Calibrate
Calibrating the cylinder length sensor requires a laptop
equipped with the HED Conductor software and a USB cable
connector (p/n 80009992). Contact your Manitowoc
distributor for further assistance.
Stabilizer Proximity Switch (version 1)
Remove
1. Disconnect electrical connector (1, (Figure 5)) at switch.
2. Remove the two screws (2, (Figure 5)) securing the
mounting bracket/switch assembly to the stabilizer box.
3. Loosen jam nut (3, (Figure 5)) securing switch (4) to
mounting bracket; remove switch.
Install
1. Fully extend stabilizer beam (horizontally).
2. Thread switch (4, (Figure 5)) into mounting bracket (5)
so that face of switch protrudes 10 mm through bracket.
3. Using two screws (2, (Figure 5)), secure mounting
bracket/switch assembly to stabilizer box.
4. Screw switch into stabilizer box until it contacts the
stabilizer wear pad, then un-screw switch three full turns.
5. Tighten jam nut (3, (Figure 5)) on switch.
6. Connect electrical connector (1, (Figure 5)) to switch.
7. With power on and stabilizer beam fully extended,
ensure LED (6, (Figure 5)) on proximity switch
illuminates; retract stabilizer beam and ensure LED is
not illuminated.
FIGURE 4
7958-1
4
2 3
5
1
FIGURE 5
2
3
4
5
7939-4
1
6
Reference Only