26-22-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(b)
Push the APU GEN FIELD MANUAL RESET switch on the P61 panel. 1) Make sure the FIELD OFF light goes off.
(c)
Pull the APU fire handle on the P8 panel out to the emergency fire position. 1) Make sure the white FIELD OFF light comes on after 5
seconds.
(d)
Push the APU fire switch to its normal position.
(e)
Put the APU GEN switch on the pilots'overhead panel P5 to the ON (in) position. 1) Make sure the white ON light in the APU GEN switch comes
on.
S 716-082
(2) AIRPLANES WITHOUT FIELD OFF LIGHTS ON THE P61 RIGHT SIDE PANEL; Do the operational check for the APU Fire Switch:
(a)
Open the APU access doors and install door support rods.
(b)
Disconnect the electrical connector from the APU generator.
(c)
Set the BAT Switch to OFF then to ON.
(d)
Set the STBY POWER Switch to AUTO.
(e)
Set the GEN CONT switch to OFF (OUT) then to ON (IN) position.
1) Make sure the resistance between pins 9 and 10 of the electrical connector is greater than 1 Kohm.
(f)
Pull the APU Fire Switch, on the P8 panel.
1) Make sure the resistance between pins 9 and 10 of the electrical connector is less than 250 ohms.
(g)
Push the APU Fire Switch to its normal position.
(h)
Turn the Generator Control Switch to off and then to on.
1) Make sure the resistance between pins 9 and 10 of the electrical connector is greater than 1 Kohm.
(i)
Connect the electrical connector to the APU Integrated Drive Unit.
(j)
Remove the door support rods and close the APU access door.
TASK 26-22-02-716-083
4. APU Fuel Valve Operation Check______________________________
A. General
(1) This procedure makes sure the APU fuel valve is closed when you pull the APU fire switch.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-22-02
ALL ú ú 05 Page 618 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
B. References
(1)
AMM 06-42-00/201, Empennage (Major Zone 300) Access Doors and Panels
(2)
AMM 24-22-00/201, Electrical Power - Control
C. Access
(1)
Location Zones
211 Flight Compartment (Left)
212 Flight Compartment (Right)
315 APU Compartment (Left)
316 APU Compartment (Right)
(2)
Access Panels
313AL Control Bay Access Door
713 Left Main Landing Gear Door
D. Prepare for Check
S 866-084
(1) Supply electrical power (AMM 24-22-00/201).
S 016-085
WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL AND THE ELEVATOR
_______ CONTROL ACCESS DOOR, 313AL. YOUR WEIGHT CAN CAUSE THE SPRING-LOADED LATCHES TO RELEASE. IF YOU FALL THROUGH THE DOOR, INJURY CAN OCCUR.
(2) Open the left main landing gear door, 713 (AMM 06-42-00/201).
E. Do the APU Fuel Valve Operation Check due to the APU Fire Switch Activation
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