Rear Linkage - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
H. With beta valve set at the rigging datum position, set fuel governor reset arm
(Fig. 4-2, #13) on its MAX stop (Fig. 4-2, #12). Align holes in terminal end of
interconnect rod (Fig. 4-2, #14) with the outer hole of the rest arm so that the
retaining bolt can be easily installed. Shorten the length of interconnect rod (Fig.
4-2, #14) by one-half turn on the terminal end.
I. When rigging is complete, check all cotter pins for correct installation, safety
wiring complete and all clevis ends, nuts, etc., are in safety and secured.
A. Disconnect power lever control cable (Fig. 4-3, #4) at input lever (Fig. 4-3, #3).
B. Disconnect push-pull cable (Fig. 4-3, #1) from propeller cam (Fig. 4-3, #2) by
removing retaining pin.
C. Align rigging holes in propeller cambox and install rig pin. This setting is a rigging
datum point.
D. Set condition lever (Fig. 4-3, #5) at LO-IDLE and install rig pin. This setting is a
rigging datum point.
E. Set FCU arm (Fig. 4-3, # 10) on FCU speed setting shaft (Fig. 4-7) maintaining
an angle of 45 degrees as shown.
F. Adjust interconnect rod (Fig. 4-3, # 6) to length of 8.25 +/- .0625 inches between
terminal end centers and using the outboard hole in FCU arm (Fig. 4-3, # 10) and
nd
2 hole down from the top of FCU actuating lever (Fig. 4-3, # 11), install
interconnect rod.
G. Place power control lever (Fig. 4-3, # 7) at Beta and reverse lockout stop and
install rig pin into FCU actuating lever (Fig. 4-3, #11) with cambox input lever
(Fig. 4-3, # 3) slightly forward of vertical, connect power lever control cable (Fig.
4-3, #4) to inboard hole on cambox input lever (Fig. 4-3, #3).
H. Remove the rig pin from the cambox (Fig. 4-3, #2) and operate the power control
lever (Fig. 4-3, #7) throughout its forward operating range. Observe that the FCU
hits the FWD MAX STOP and returns to the ground idle position when the power
control lever is fully advanced with FCU on FWD MAX STOP, ensure that:
1. Cam follower pin is clear of bottom of cam track.
2. FCU reaches FWD MAX STOP before cockpit power lever reaches its
forward extremity of control quadrant travel. There should be a slight
"cushion" at the end of lever travel.
I. Select MAX REVERSE with power control lever (Fig. 4-3, #7) and verify that FCU
MAX REVERSE STOP (Fig. 4-7) is contacted before power lever reaches
rearward extremity of control quadrant travel. Allow slight "cushion" at the end of
lever travel.
J. To check dead band, place protractor on cambox input lever (Fig. 4-3, #3).
K. Retard power lever (Fig. 4-3, #7) into REVERSE range as far as necessary in
order to get the FCU lever (Fig. 4-3, #10) to move off of the dead band stop.
Slowly move the power lever (Fig. 4-3, #7) forward until the dead band
adjustment screw (Fig. 4-7) hits the stop. The screw should be against the stop
Effective: 05/05/04
AIRCRAFT MAINTENANCE MANUAL

REAR LINKAGE

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