Engine Operational Check - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
Whenever the gas generator fails to light off within 10
seconds after moving the fuel condition lever to the ground
(low) idle position: pull fuel condition lever to idle cutoff and
turn ignition and starter switches off. Allow a 30-second fuel
draining period that is followed by a 15-second dry motoring
run before attempting another start.
starting attempt is discontinued, allow the engine to come to a
complete stop and then accomplish a Dry Motoring Run as
described above under Engine Fires.
When the engine attains idle rpm:
K. Engine Starter Switch and Ignition Switch - Off
L. Oil Pressure - Check 60 PSIG Minimum
M. Fuel Auxiliary Pump - Off
N. Fuel Pressure from Engine Driven Pump - Check 5 PSI Minimum
O. Generator Charging – Check
Fill hopper and hold the elevator control firmly
full up during all high power ground operations
to keep aircraft from nosing over.
Refer to Section Four and/or Pratt & Whitney Maintenance Manual for specific operational
checks.
Before proceeding with a ground run up, be sure that the propeller system is purged by
feathering the propeller once or twice with the power control lever in idle position.
The following procedure should be used to check the propeller over speed governor.
A. Place the propeller lever in full increase RPM position (forward).
B. Turn prop test switch on.
C. Increase RPM with the power lever until governing occurs. This should occur at
1598 ±20 RPM. (In no case should any engine limitations be exceeded.)
D. Reduce power back to idle.
E. Turn prop test switch off.
If RPM is not governed at 1598 ±20 RPM with
the prop test switch on, consult Section IV of
this manual for adjustment of the overspeed
governor.
Effective: 05/05/04
AIRCRAFT MAINTENANCE MANUAL

ENGINE OPERATIONAL CHECK

** CAUTION **
*NOTE*
If for any reason a
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