(h)
Write down the airplane input voltage shown on the DVM.
(i)
Use the formula that follows to calculate the necessary transducer output:
NOMINAL OUTPUT .............. x Measured input = Measured output of transducer NOMINAL INPUT (DVM voltage (PAV voltage reading)
reading)
0.0481 ...... x V at DVM = V at PAV
26.00
where V = voltage shown on monitor
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(j) Loosen the clamping nut on the transducer clamp such that the
transducer body can turn.
(k) Turn the body until there is an in-phase absolute output
voltage of less than 1.25v ac.
NOTE: The zero mark on the body must be less than 30 degrees____
from the zero mark on the shaft.
(l) Tighten the clamping nut.
(m) Make sure that the absolute output in-phase voltage is less
than 1.25v ac.
(n) Remove the lockwire from the control rod that is attached to
the sensor crank.
(o) Turn the adjustment nut on the control rod slowly until the PAV
shows a value near the value obtained by the formula.
(p) Use the breakout box and repeat the same adjustment steps for
the other two neutral shift transducers.
(q) Turn the feel unit input crank clockwise approximately
5-degrees.
(r) With the crank held at 5-degrees, measure the in-phase output
of each transducer.
(s) Make sure that the voltage is in-phase with the input voltage.
(t) Make sure that the difference in the voltage between two
transducers is not more than 0.40v ac.
(u) Turn the feel unit input crank counterclockwise approximately
2-degrees.
(v) With the crank held at 2-degrees, measure the in-phase output
of each transducer.
(w) Make sure that the voltage is in-phase with the input voltage.
(x) Make sure that the difference in the voltage between two
transducers is not more than 0.40v ac.
(y) Put a lockwire on the control rod.
(z) Make sure that the PAV shows the necessary output voltage.
(aa) Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags: 1) 11E17, FLT CONT COMPUTER POWER LEFT
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2) 11E20, FLIGHT CONT CMPTR PWR CENTER
3) 11E35, FLT CONT CMPTR PWR RIGHT
(ab) Disconnect the breakout box and the -26 cable assembly from the
electrical connector.
(ac) Disconnect the DVM and the PAV from the breakout box.
(ad) Disconnect the breakout box and the -27 cable assembly from the
transducer.
S 825-054
(5)
Neutral Shift Transducer Adjustment (PROCEDURE 4):
(a)
Prepare the phase synchronous voltmeter for use as written on the tool.
(b)
Attach the applicable cable assembly from the voltmeter to the transducer connector.
(c)
Loosen the clamping nut on the transducer clamp such that the transducer body can turn.
(d)
Turn the body until there is an in-phase absolute output voltage of less than 1.25v ac.
NOTE: The zero mark on the body must be less than 30 degrees
____
from the zero mark on the shaft.
(e)
Tighten the clamping nut.
(f)
Make sure that the absolute output in-phase voltage is less than 1.25v ac.
(g)
Remove the lockwire from the control rod that is attached to the sensor crank.
(h)
Turn the adjustment nut on the control rod to get the smallest possible in-phase voltage.
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