钻石40飞机维护手册 DA 40 SERIES AMM 2(21)

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D. KS 270C Pitch Servo
The pitch servo is located aft of the baggage compartment frame. It is mounted on a mounting plate which is made from sheet aluminum. Two aluminum clamps connect a bridle cable to the elevator push-rod.
E. KS 272C Pitch Trim Servo
The pitch trim servo is located under the co-pilot's seat. It is mounted on a mounting plate which is made from sheet aluminum and mounting bracket which is made from GFRP. Servo movement is transmitted to the trim wheel through a chain gear on the servo, a cardan shaft, and a chain gear next to the trim wheel on the right side.
Page 8 Doc # 6.02.01 09 Jan 2003 Rev. 4
22-10-00
Auto Flight
AMM

Maintenance Practices
1. General
These maintenance practices tell you how to install the components of the autopilot system. They also tell you how to test and adjust the autopilot system.
2. Remove/Install the Flight Control Computer
A. Remove the Flight Control Computer
Detail Steps/Work Items  Key Items/References 
(1)  Open the AUTO PILOT circuit-breaker. 
(2)  Put a 3/32 Allen wrench into the access hole for the locking screw. Engage the screw. 
(3)  Turn the screw counter-clockwise until the unit disengages from the mounting rack. 
CAUTION: DO NOT PULL ON THE KNOBS. DO NOT PRY THE FACE-PLATE. IF YOU PULL ON THE KNOBS, OR PRY THE FACE- PLATE, YOU CAN DAMAGE THE UNIT. CAUTION: DO NOT TOUCH THE CONNECTOR CARD AT THE REAR OF THE UNIT. THE ELECTROSTATIC CHARGE ON YOUR BODY CAN DAMAGE THE UNIT. 
(4)  Pull gently on the sides of the unit to remove it from the mounting rack. 
(5)  Install the protective covers on the rear connectors of the flight control computer. 

Doc # 6.02.01 Page 201
Rev. 4 09 Jan 2003

22-10-00
AMM

B. Install the Flight Control Computer
DA 40 Series

Detail Steps/Work Items  Key Items/References 
(1)  Remove the protective covers from the connectors on the replacement unit. 
(2)  Slide the unit into the rack. Engage the locking screw so that the latch front-lobe touches the rack. 
(3)  Turn the locking screw clockwise so that the rear lobe engages the mounting rack. 
CAUTION: DO NOT OVER-TIGHTEN THE LOCKING SCREW. YOU CAN DAMAGE THE LOCKING MECHANISM. 
(4)  Continue to turn the screw until the unit is fully installed in the mounting rack. 
(5)  Close the AUTO PILOT circuit-breaker. 
(6)  Do a test of the autopilot system: S Set master switch to ON. S Set avionics master switch to ON. S Observe self-test of the flight control computer. S Set avionics master switch to OFF. S Set master switch to OFF.  If no error message appears, then the system is operative. 

Page 202 Doc # 6.02.01 09 Jan 2003 Rev. 4
22-10-00
Auto Flight
AMM

3. Remove/Install the Roll Servo
A. Remove the Roll Servo
Detail Steps/Work Items  Key Items/References 
(1)  Remove the passengers' seat.  Refer to Section 25-10. 
(2)  Dis-connect the connector from the servo. 
(3)  Remove the 2 screws which attach the servo to the mounting plate and the clutch.  Hold the servo. 
(4)  Remove the servo clear of the airplane. 

B. Install the Roll Servo
Detail Steps/Work Items  Key Items/References 
(1)  Put the servo in place on the mounting plate. 
(2)  Install the 2 screws which attach the servo to the mounting plate and clutch. 
(3)  Connect the connector to the servo. 
(4)  Do a test of the autopilot system: S Set master switch to ON. S Set avionics master switch to ON. S Observe self-test of the flight control computer. S Set avionics master switch to OFF. S Set master switch to OFF.  If no error message appears, then the system is operative. 
　
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