S 495-021
(13)
Install a jumper wire between the sockets B1 and B2 of the electrical connector on the APU fuel-control relay (K175).
S 865-022
(14)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a)
6E3, FUEL VALVES APU
S 215-023
(15)
Make sure the manual override handle on the APU fuel shutoff valve moves to the OPEN position.
S 215-024
(16)
Make sure the APU FAULT light on the P5 panel comes on while the APU fuel shutoff valve moves to the open position.
S 865-025
CAUTION:_______DO NOT TURN THE FIRE SWITCH. IF YOU TURN THE FIRE SWITCH, THE CONTENTS OF THE FIRE BOTTLE CAN ACCIDENTALLY RELEASE AND CAUSE DAMAGE.
(17)
Pull the APU FIRE switch on the P8 stand to the FIRE position.
S 215-026
(18)
Make sure the manual override handle on the APU fuel shutoff valve moves to the CLOSED position.
(19)
Push the APU FIRE switch to the NORMAL position.
S 865-027
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28-25-00
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757
MAINTENANCE MANUAL
S 215-028
(20)
Make sure the manual override handle on the APU fuel shutoff valve moves to the OPEN position.
S 215-029
(21)
Make sure the APU FAULT light on the P5 panel comes on while the APU fuel shutoff valve moves to the open position.
S 865-030
(22)
Open this circuit breaker on the P6 panel:
(a)
6E3, FUEL VALVES APU
S 095-031
(23)
Remove the jumper wire from the socket B1 of the electrical connector (D2378).
S 495-032
(24)
Install the jumper wire in the socket B3 of the electrical connector (D2378).
S 865-033
(25)
Close this circuit breaker on the P6 panel:
(a)
6E3, FUEL VALVES APU
S 215-034
(26)
Make sure the manual override handle on the APU fuel shutoff valve moves to the CLOSED position.
S 865-035
(27)
Open this circuit breaker on the P6 panel:
(a)
6E3, FUEL VALVES APU
S 215-036
(28)
Make sure the EICAS advisory message, APU FUEL VAL, shows on the top display.
S 865-037
(29)
Close this circuit breaker on the P6 panel:
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本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 4(20)
