Overspeed Governor - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

2.

Overspeed Governor

A. Removal
(1) Remove upper forward and lower cowlings.
(2) Disconnect electrical leads from overspeed governor.
(3) Remove nuts and washers securing overspeed governor to propeller gearbox. Withdraw
assembly from mounting studs and discard mounting gasket.
B. Installation
(1) Install new mounting gasket over studs.
(2) Install overspeed governor on mounting pad. Ensure drive shaft is properly engaged, secure
with washers and self-locking nuts.
(3) Connect electrical leads to overspeed governor.
(4) Check overspeed governor operation per Operational Check, below.
(5) Reinstall cowlings.
C. Operational Check
(1) Start engine and allow engine instruments to stabilize.
(2) Set power levers for 1900 rpm propeller speed.
(3) Push Overspeed Governor Test switch (in overhead switch panel) and observe drop in
propeller rpm. The drop must be approximately 20 to 50 rpm.
(4) Release switch and prop rpm must increase to original rpm.
7C19
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
(PIR-PPS60187, Rev. C.)
61-20-00
Apr 15/07
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