钻石40飞机维护手册 DA 40 SERIES AMM 2(74)

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(2)  Disconnect the battery: S Disconnect the negative cable from the battery. S Disconnect the positive cable from the battery.  Refer to Section 24-34. 
(3)  Remove the instrument panel cover.  Refer to Section 25-10. 
(4)  Disconnect the electrical cables from the switch that you will remove. 
(5)  Remove the switch from the instrument panel: S Press the locking clips at the side of the switch to release the switch from the instrument panel. S Move the switch forward through the instrument panel and clear of the airplane.  With your fingers from the back of the instrument panel. 

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% B. Install an Instrument Panel Switch %

Detail Steps/Work Items  Key Items/References 
(1)  Hold the spring clips on the switch compressed and put the switch in position in the instrument panel.  From the front of the instrument panel. Make sure that the clips have expanded and that the switch is correctly located. 
(2)  Connect the electrical cables to the switch.  Refer to Chapter 92 for the Wiring Diagrams. 
(3)  Install the instrument panel cover.  Refer to Section 25-10. 
(4)  Connect the main battery.  Refer to Section 24-34. Connect the positive cable first. 
(5)  Install the top engine cowling.  Refer to Section 71-11. 
(6)  Do a functional test of the switch: S Set the ELECTRIC MASTER key switch to ON. S Set the switch that you have installed to ON. S Set the switch that you have installed to OFF. S Set the ELECTRIC MASTER key switch to OFF.  The system must operate correctly. The system must switch off. 

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% A. Remove the ENGINE Switch %

Detail Steps/Work Items  Key Items/References 
(1)  Remove the top engine cowling.  Refer to Section 71-11. 
(2)  Disconnect the battery: S Disconnect the negative cable from the battery. S Disconnect the positive cable from the battery.  Refer to Section 24-34. 
(3)  Disconnect the ECU backup battery: S Disconnect the negative cable from the battery. S Disconnect the positive cable from the battery.  Refer to Section 24-34. 
(4)  Remove the instrument panel cover.  Refer to Section 25-10. 
(5)  Disconnect the alternator excitation battery: S Disconnect the negative cable from the battery. S Disconnect the positive cable from the battery.  Refer to Section 24-33. 
(6)  Remove the nut and washers that attach the switch. 
(7)  Move the switch towards the firewall.  To give access to the electrical cable connection on the switch. 
(8)  Disconnect the electrical cables from the ENGINE MASTER switch. 
(9)  Remove the switch from the instrument panel. 

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% B. Install the ENGINE MASTER Switch %

Detail Steps/Work Items  Key Items/References 
　
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