Valley Rainger Linear, Owner'S Manual

Page: 85 / 104

Rainger Linear 85
MAINTENANCE
Machine Alignment
Tower Alignment - Three Tower Method
The three tower alignment method is used to identify
towers that start or stop in a position that is either
leading or trailing in relationship to the other two
towers.
This procedure works best with two people:
• One person at tower 1 sighting the tower
alignment.
• One person at tower 2 adjusting the align-
ment.
1. At the control panel, set the percent timer at 50%
and start the machine in either the forward or the
reverse direction.
2. Begin the alignment procedure from an end
tower. Identify the first three towers as 1, 2, and
3. Use towers 1 and 3 to align tower 2. See Fig-
ure 85-1.
3. Sight an imaginary center line between the cen-
ter of the tower drive motor 1 to the center of the
tower drive motor 3. See Figure 85-1.
4. Observe the movement of the tower drive motor
2. It should start and stop equal distances from
the imaginary center line. See Figure 85-1.
If it does not, the alignment linkage at tower box
2 needs to be adjusted.
5. If adjustments are necessary, stop the machine
and make adjustments using the Floating or
Modified Alignment Adjustment procedures, lo-
cated in the Adjustments Section of this manual.
!
CAUTION
• ADJUSTMENTS TO THE CENTER TOWERS
CAN CAUSE THE SYSTEM TO GO INTO A
STEER. AFTER ADJUSTING THE ALIGN-
MENT WAIT FOR THE SYSTEM TO CYCLE
TWICE BEFORE MOVING ON TO THE NEXT
TOWER.
6. After tower 2 is aligned, move in to the next tower
and repeat steps 3, 4, and 5 of this procedure.
Continue this process to the other end of the
machine.
A
B
6
4
3
2
5
1
8
7
Figure 85-1 1. Direction of Travel
2. Tower 1
3. Tower 2
4. Tower 3
5. End Tower
6. Free Standing Span
7. Start
8. Stop