Valley Center Pivot 7000 Series, Owner'S Manual, Page: 85 / 106

MAINTENANCE
Center Pivot 7000, 8000, 8120 Series 85
Machine Alignment
Setting Alignment Cable Tension
4. Set alignment cable tension. Use a truss spreader part number 9360055 to check the alignment cable ten-
sion. The truss spreader is 115 in (292 cm) long and weighs 23.4 lb (10.6 kg). See Figure 85-1.
5. Position the truss spreader across the alignment cables at approximately 58 in (147 cm) from the drive unit
ball and socket joint. See Figure 85-1.
6. Hold and support the truss spreader across the safety cables and measure and record the distance from
the truss spreader to the span pipe without the full weight of the truss spreader. This is the ORIGINAL
measurement. See Figure 85-1.
Alternate Method:
6. With a piece of string and a 3/4 in nut tied to each end, you can lay it over the cables and one man can
measure the ORIGINAL measurement.
7. Lower the truss spreader onto the alignment cables and allow the alignment cables to support the full
weight of truss spreader. See Figure 85-1.
1
2
4
3
1
8
5
6
58 in (147 cm)
Figure 85-1 1. Alignment Cable
2. Truss Spreader
3. Ball and Socket Joint 4. Span Pipe
5. T-Bar
6. Original Measurement 7. Pivot
8. Do Not Deflect
9. Alternate Method
9