THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
4-26
Effective: 9/16/05
B. Feather
propeller.
C.
Ng should not change more than 100 RPM.
MAX PROPELLER SPEED CHECK
A.
Set propeller control lever to obtain 100% Np or 1700 RPM
B.
Adjust MAX SPEED stop adjuster screw (Figure 4-2, item 10) as necessary.
OVERSPEED GOVERNOR CHECK
The over speed governor is set to govern at 104% Np or approximately 1768 RPM and
should not normally require re-adjustment. To check:
A.
Move the propeller control lever to MAX INCREASE.
B.
Increase power to obtain 1600 RPM.
C.
Do not exceed engine torque limit during this check.
D.
Hold propeller test switch in PROP GOV TEST.
E.
Advance power control lever until RPM stabilizes. Over speed governing should
hold stable rpm indication of 1598 ± 20 RPM.
F.
Return power lever to IDLE and release the propeller test switch.
FEATHERING CHECK
A.
Set propeller control lever to MAX INCREASE.
B.
Set power control lever at IDLE.
C.
Set condition lever at LOW IDLE.
D.
Pull propeller power control lever aft., past the GROUND OPERATION
PROPELLER PITCH STOP detent, to the after most position and observe that
the propeller begins to feather.
REVERSE MAX POWER CHECK (Figure 4-4)
A.
Fuel Condition Lever – HIGH IDLE
B. Propeller
Control
Lever – MAX INCREASE
C.
Power Lever - Pull slowly from IDLE to REVERSE.
D.
Propeller speed rises to and steady between 1580 and 1650 RPM.
E.
Torque should be in the range of 8.5 to 9.5 psi.
GROUND OPERATION PROPELLER PITCH STOP
Provides positive method to keep out of the propeller’s ground operation RPM
restrictions. (NOTE: This stop is adjusted at the factory by controlling the length of the
latch’s pawl and should not require field adjustment. If adjustment is necessary, file the
end of the pawl to adjust length, to obtain below said specifications.)
For PT6A-45A, -45B, -45R, -60AG, -65AG, -65AR, -65B engines with model HC-B5MP-
3C/M10876AS or ANS propellers adjust the ground operation propeller pitch stop to
Содержание S2RHG-T65 TURBO THRUSH
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