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(p) Calibration of Engine Torque is complete. Turn aircraft main power OFF.
(q) Disconnect the calibrated pressure source and reconnect the torque transducer lines.
(3) Full Range Check of the Engine Torque Indication
(a) Apply power to the aircraft.
(b) Verify the MFD is operating in normal operational mode, not Maintenance Mode (See
77-00-00, Figure 1). Restart it if necessary. Turn the right outer knob to bring up the
Engine Page, if necessary.
(c) Connect the Torque Transducer to a calibrated pressure source as shown in Figure 5.
(d) Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to zero (0) LBS-FT of torque to the torque transducer.
(e) Verify the Torque display on the MFD reads 0. Verify that the Torque value of the PFD
reads the same value as the torque value of the MFD. (See 77-00-00, Figure 1.)
(f)
Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 200 LBS-FT of torque to the torque transducer.
(g) Verify the Torque display on the MFD reads 200 ± 10 LBS-FT. Verify that the Torque value
of the PFD reads the same value as the torque value of the MFD.
(h) Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 400 LBS-FT of torque to the torque transducer.
(i)
Verify the Torque display on the MFD reads 400 ± 10 LBS-FT. Verify that the Torque value
of the PFD reads the same value as the torque value of the MFD.
(j)
Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 600 LBS-FT of torque to the torque transducer.
(k) Verify the Torque display on the MFD reads 600 ± 10 LBS-FT. Verify that the Torque value
of the PFD reads the same value as the torque value of the MFD.
(l)
Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 800 LBS-FT of torque to the torque transducer.
(m) Verify the Torque display on the MFD reads 800 ± 10 LBS-FT. Verify that the Torque value
of the PFD reads the same value as the torque value of the MFD.
(n) Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 1000 LBS-FT of torque to the torque transducer.
(o) Verify the Torque display on the MFD reads 1000 ± 10 LBS-FT. Verify that the Torque
value of the PFD reads the same value as the torque value of the MFD.
(p) Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 1200 LBS-FT of torque to the torque transducer.
(q) Verify the Torque display on the MFD reads 1200 ± 10 LBS-FT. Verify that the Torque
value of the PFD reads the same value as the torque value of the MFD.
(r)
Referring to Chart 1 and using the calibrated pressure source, apply the pressure
corresponding to 1320 LBS-FT of torque to the torque transducer.
(s) Verify the Torque display on the MFD reads 1320 ± 10 LBS-FT. Verify that the Torque
value of the PFD reads the same value as the torque value of the MFD.
(t)
Full range check of the engine torque indication is completed, turn aircraft power OFF.
(u) Disconnect the calibrated pressure source and reconnect the torque transducer lines.
7I21
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
77-10-00
Apr 15/07
PAGE 9
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Table of Contents
Troubleshooting
