CP600 Pivot Operators Manual
OPERATION, SAFETY & MAINTENANCE
Section 1-6
© Pierce Corporation
July 2010
Your Pierce Center Pivot irrigation system should be run with a slight leading bow (center towers
ahead of pivot and end tower) in both directions. A correctly aligned machine will have an equal
bow when operated in either direction. DO NOT let the machine run with a large leading bow in one
direction and a lagging bow in the other. To align the machine, follow these steps:
Start at the pivot end of the machine with the machine running in the forward direction and the per-
cent timer set to 75 percent. Stand between tower 2 and tower 3 and sight across motors No. 2 and
1 to the pivot stand pipe. Tower 1 should start when motor 1 appears to be slightly behind and shut
off when it appears to be an equal distance ahead of the center of the standpipe.
When tower 1 is properly aligned, stand between towers 3 and 4 and sight across motors 3 and 2
to the pivot standpipe. Align tower 2 in the same manner as tower 1. As you get to the outer end
of the machine and can no longer see the pivot standpipe, pick a motor on one of the inner towers
and sight to it.
On some towers (#1 for example) it may be desirable to have less forward motion each time the
tower moves. This may be accomplished by loosening the nut on the ball joint disconnect and mov-
ing the ball joint toward the cam. Likewise, a tower can be made to run longer by moving the ball
joint away from the cam. All the ball joint are set at the factory at the mark shown on the cam arm
in the drawing. This is the proper setting for most towers.
MACHINE ALIGNMENT
Machine Alignment
ing the ball joint toward the cam. Likewise, a tower can be made to run longer by moving the ball ing the ball joint toward the cam. Likewise, a tower can be made to run longer by moving the ball
joint away from the cam. All the ball joint are set at the factory at the mark shown on the cam arm joint away from the cam. All the ball joint are set at the factory at the mark shown on the cam arm
in the drawing. This is the proper setting for most towers. in the drawing. This is the proper setting for most towers.
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