Propeller Csu High Rpm Adjustment - Thrush Aircraft S2R–T660 Maintenance Manual

D. Position the governor on the mounting pad and secure it in place with the four attaching
washers and nuts. Torque the nuts to 125 to 135 inch-pounds.
E. Secure the propeller-reversing lever to the beta valve with the attaching bushing, clevis pin,
washer and cotter pin.
F. Secure the front clevis end to the propeller reversing lever with the attaching spacer, bolt,
washers, castellated nut and cotter pin.
G. Secure the Nf governor-interconnecting rod to the Nf governor reset arm with the attaching
bolt, washer, castellated nut and cotter pin.
H. Secure the governor speed select lever to the propeller speed control cable with the
attaching bolt, washer and nut.
I. Ensure the governor's stop plate contacts both the high RPM stop screw and the feathering
stop screw, when the propeller control lever in the cockpit is operated. Ensure that there is
sufficient cushion at both positions on quadrant. If linkage will not allow proper travel, adjust
the control linkage at either rod end or move speed select lever on the governor to obtain
necessary travel.
J. Connect coupling nut of the pneumatic (Py) front tube to propeller governor. Tighten nut;
torque to 90 to 100 lb. in., and lock wire.
K. Check engines front linkage rigging.
L. Accomplish propeller governor operational checks in accordance with the appropriate Pratt
& Whitney Maintenance Manual.
M. Install the forward engines cowling.

PROPELLER CSU HIGH RPM ADJUSTMENT

If a high RPM adjustment is required, turn the high RPM stop screw on the governor head clockwise
to decrease or counter clockwise to increase RPM as required to obtain 1,700 RPM propeller speed
(NP). After adjustment, ensure there is sufficient cushion at both the feathered and high RPM
positions at the propeller lever on the throttle quadrant. Lockwire the high RPM stop screw after
adjustment.
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THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
** CAUTION **
Ensure drive splines are completely engaged by checking that
flange of governor rests squarely on gasket with no gap. Rotate
propeller to assist engagement, if necessary.
Effective: 01/10/05
R1