Condition Lever Linkage; Propeller Rigging - Thrush Aircraft S2R–T660 Maintenance Manual

THRUSH AIRCRAFT INC - T660 TURBO THRUSH
O. Check that the deadband adjusting screw (Fig. 4-7) first contacts the stop at, or slightly
forward of the idle detent and the adjusting screw begins to lift-off the stop at, or slightly aft of
the ground idle detent.
P. The deadband travel can be repositioned by adjusting the serrated washer (Fig. 4-7) on
the speed setting shaft. A movement of one serration will result in 0.6-degree change in
position of the FCU arm (Fig. 4-3, #10). Fine adjustments of the deadband position may be
made by adjusting the length of the interconnect rod (Fig. 4-3, #6).
Q. Connect the push-pull cable (Fig. 4-3, #1) to the propeller cam Fig. 4-3, #2).
R. When rigging complete, check all cotter pins for correct installation, safety wiring
complete and all clevis ends, nuts, etc. are in safety.

CONDITION LEVER LINKAGE

With the condition lever placed in LOW-IDLE, install rig pin. This is the datum setting point.
A. Place the condition control lever (Fig. 4-3, #8) in LOW-IDLE detent on cockpit control
quadrant.
B. Align cable terminal with 3
connect.
C. Operate the condition control lever (Fig. 4-3, #8) on the cockpit control quadrant
throughout its full range to ensure freedom of movement and check the following:
1. When OFF, the FCU cut-off stop (Fig. 4-7) is contacted and the pump off-load set
screw (Fig. 4-7) fully depresses the pump unloading valve plunger (Fig. 4-7).
2. When control lever selected to LOW-IDLE, the FCU condition lever (Fig. 4-3, #5)
rig pin can be inserted and withdrawn freely.
3. When selected to HIGH-IDLE, the FCU reset lever contacts the HIGH-IDLE stop
(Ref. Fig. 4-7).

PROPELLER RIGGING

A. Move propeller control lever (Fig. 4-3, #9) fully forward and check that the skirt below the
propeller governor speed set lever (Fig. 4-2, #9) contacts the maximum speed stop (Fig. 4-2,
Item 10).
B. Move the propeller control lever in the cockpit to FEATHER and ensure that the skirt below
the governor speed set lever (Fig. 4-2, Item 9) fully depresses the feathering valve plunger.
4 – 29
AIRCRAFT MAINTENANCE MANUAL
rd
hole from the top in FCU condition lever (Fig. 4-3, #5) and
Effective: 12/17/03