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) A rudder pedestal at the rear of the fuselage. The rudder lower mounting-bracket is attached to the
rudder leading edge. It connects the rudder to the rudder pedestal.
) Cable assemblies.
Six bolts attach each rudder pedal assembly to the cockpit floor.
Each rudder pedal assembly has two pedals. Each pedal has a lever and a foot pad. The pedal has
an "S" shaped tube. The lower part of the "S" shaped tube aligns with the pivot of the pedal. The upper
part of the "S" shaped tube aligns with the foot pad of the pedal.
Four control cables ('cockpit cables') go from the firewall to enter the bottom of each "S" shaped tube.
A multi-hole fitting at the firewall gives adjustment for each cable. Each cable goes through an “S”
shaped tube and comes out at the top. Each cable goes from the pedal assembly to the yoke.
Each outboard control cable goes through a Teflon tube in the aft face of the floor panel. Each
outboard control cable goes inboard through a guide pulley on the control bulkhead. The cables
connect each outer pedal to the front arm of the yoke.
Each inboard control cable goes through a Teflon tube in the aft face of the floor panel. The cables
connect each inner pedal to the side arms of the yoke.
Two cable assemblies ('fuselage cables') attach to the rear of the yoke. Each cable assembly has a
short front cable and a long rear cable. All cables go through Teflon tubes. A turnbuckle connects the
front and rear cables. The turnbuckle can adjust the tension in the fuselage cables and the neutral
position of the rudder.
The two fuselage cables go through Teflon tubes in the rear fuselage. The cables attach to the rudder
lower mounting-bracket. The cables cross over each other in the rear fuselage.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 4
20 Sep 2007 27-20-00 Doc # 6.02.01
Rev. 5
Rudder Control Cable
Attachment
oor Panel
Aft Attachment
to Floor Panel
Reservoir
ilot only)
Master Cylinder
ube for
l Cables
'S' Tube for
Control Cables
Rudder Pedal Brake Pedals
Left Rudder Pedal
Adjuster Handle
Sledge Tubes Adjuster Latch
Roll-Pins
n Springs
Adjuster Cable
er Return Springs
Multi-Hole Bracket
(Attachment for Cables)
Figure 2: Rudder Pedal Assembly
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-20-00 Page 5
20 Sep 2007
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% Figure 3: Rudder Pedal Assembly with Electrical Adjustment (OÄM 40-251 incorporated)
Rudder Control Cable
Front Attachment
to Floor Panel
Aft Attachment
to Floor Panel
Brake Reservoir
(Co-Pilot only)
Brake Master Cylinder
'S' Tube for
Control Cables
'S' Tube for
Control Cables
Brake Pedals
Right Rudder Pedal
Left Rudder Pedal
Transmission Mechanism
Sledge
Tubes
Roll-Pins
Adjuster Rod
Multi-Hole Bracket
(Attachment for Cables)
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 6
20 Sep 2007 27-20-00 Doc # 6.02.01
Rev. 5
The rudder stop which limits the rudder deflection to the left side is located left of the rudder lower
hinge (refer to Figure 4). The rudder stop which limits the rudder deflection to the right side is located
right of the rudder lower hinge. Each rudder stop consists of a nut which is welded to the rudder lower
mounting-bracket, a bolt which is held by that nut, and a jam-nut which secures the bolt.
3. Operation
% A. Manual Adjustment
If you move the left rudder pedal forward:
) The top of the "S" shaped tube moves forward.
) The "S" shaped tube pulls the left cockpit cable.
) The left cockpit cable moves the yoke counter-clockwise (seen from above).
) The yoke pulls the fuselage cable attached to its right arm forward. This cable connects to the left
of the rudder.
) The fuselage cable moves the rudder to the left.
) The rudder movement pulls the other fuselage cable aft. This cable connects to the left of the yoke.
) The fuselage cable moves aft with the left side of the yoke.
) The left side of the yoke pulls both of the right cockpit cables aft. And the cables pull the "S" shaped
tubes on the right rudder pedals aft.
If you move the right rudder pedal forward each part moves in the opposite sense. The rudder moves
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钻石40系列AMM 1(157)
