8-10 
 
8.13.3 Remove the Rear Cover Plate of the Work Surface 
1.    Turn the three pentagonal knobs on the cylinder yoke assembly counterclockwise to remove 
the knobs (if there is a cylinder yoke). 
2.    Remove the two screws from the rear cover plate of the work surface with the Phillips 
screwdriver to remove the rear cover plate. 
 
8.13.4 Remove the Work Surface Cover Plate FRU 
Loosen the four captive screws with the Phillips screwdriver, remove the two screws, and remove 
the work surface cover plate. 
    
 
 
 
   
 
 
 
 
8.13.5 Remove the Instrument Panel Assembly 
1.    Remove the five screws (marked by ○ in Figure A) from the instrument panel assembly and 
loosen the two captive screws (marked by △ in Figure A) with the Phillips screwdriver. 
2.    Open the BFCS door, remove the set screws fastening the air needle valve knob and O2 
needle valve knob with the M3 hexagon screw spanner, and take out of the knobs, as shown 
in Figure B. 
One captive screw on the rear 
Three captive screws on the bottom 
right 
Open the front VE door and 
remove the two screws