Chapter 5 – General Operation
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13841 Rev A
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NOTE: Disregard the clock numbering on the chart when
plotting using the protractor. Use only the angles from the
protractor.
If possible, make only a single change on the rotor for the first
run, then check the correctness of the chart. The move line (a
line drawn between the first and second or any sequential runs)
that results from a single change must be parallel to the fine lines
that extend from the unchanged axis. Since the 3.5 g added to the
pitch link results in a lower IPS reading than the first run, use
this solution for the first adjustment.
In the example, the next run (No. 2) reading is 11:50 (from the
balancer and protractor), but it missed it’s intended position by
one hour CCW. Rotate the corrector body on the chart one hour
clockwise to correct for the one hour it missed it’s intended
point. The “real” #2 point is replotted at 11:50. Plot remaining
corrections using the protractor with the photocell line at
approximately. 12:00 o’clock.
5.5.3.1
Counter-Clockwise Rotor Correction
Correct the chart for counter-clockwise-turning rotors (blue or
CCW side of the Rotor Protractor), using the following
conditions:
If the move line misses to the right of the expected point (as
viewed from first point to expected point), rotate the Rotor
Protractor counter-clockwise the same number of degrees by
which the point missed its intended angle.
If the move line misses to the left of the expected point (as
viewed from first point to expected point), rotate the Rotor
Protractor clockwise on the graph the same number of
degrees by which the point missed its intended angle.
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