Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual page 1492

(9) Conduct a wet motoring run for 30 seconds and record the amount of fuel in the container. If
the amount of fuel is the same (± 10cc) the engine may be started.
(10) Reconnect the fuel supply line at the the F.C.U. to engine flow divider.
(11) Start engine.
(12) Place power lever in idle. Advance quadrant MOR lever slowly. Verify that full power can be
achieved (1310 ft-lb minimum @ 2000 RPM).
(13) Verify the MOR deadband is a minimum of 25 degrees at the F.C.U. MOR before MOR fuel
flow starts increasing.
K. Torque Limiter Check
NOTE: Perform the torque limiter check only after hot section inspection or engine change.
The torque limiter is set at 565 shp (1484 ft. lbs.).
(1) Advance power lever to its full max travel (i.e. - beyond the normal full power range).
(2) Verify that the engine torque is limited to 1480 to 1500 ft. lbs.
(3) Placing the power lever at full max travel, above, will cause an exceedance. Make an engine
logbook entry to document the "Exceedance caused by torque limiter check."
L. Adjustments Required (See Figures 1, 2, & 3.)
(1) Idle Adjustment
WARNING: STABILIZED GROUND OPERATION BELOW 1200 RPM (N P ) CAN GENERATE
(a) Adjust F.C.U. idle (i.e. - Minimum Governing Adjustment, Figure 1) to give 63 to 64 % Ng
(1 flat = 2%).
NOTE: If the minimum governing adjustment range is insufficient to achieve specified
(b) Bleed Air, Generator, and Air Conditioning should be ON.
(2) Maximum Power
Verify torque of 1310 to 1330 ft.-lbs. at Np of 2000 RPM. Use view-thru Tach to verify.
(3) Forward Ng Pickup Dead Band
Adjust F.C.U. Control Rod (attached to FCU control arm, Figure 1) to obtain .25 in. to .312 in.
deadband from power lever idle stop in pedestal. See also Power Lever Cable, Adjustment,
and Detail C, Figure 3.
NOTE: Shortening rod will decrease Ng pickup dead band.
(4) Reverse Ng Pickup Dead Band
Adjust deadband adjustment screw on beta cam box. Delay Ng pickup in reverse until prop
RPM drops slightly. The gap should be approximately 0.312 in.
NOTE: Place power lever in IDLE. When you pull power lever up to go into BETA, no
decrease in Ng should be noted.
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Apr 15/07
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
HIGH PROPELLER STRESSES AND RESULT IN FATIGUE DAMAGE TO THE
PROPELLER. THIS DAMAGE CAN LEAD TO A REDUCED PROPELLER
FATIGUE LIFE, PROPELLER FAILURE, AND LOSS OF CONTROL OF THE
AIRCRAFT. CONTACT THE PROPELLER MANUFACTURER FOR
CORRECTIVE ACTIONS IF A PROPELLER RESTRICTION OR LIMITATION IS
VIOLATED.
Ng, then reset the FCU control arm one (1) serration and try again. See also
Power Lever Cable, Adjustment, and Detail C, Figure 3.
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