Go-Around Switches Adjustment
Figure 502
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(3) S 865-003-N00Remove the electrical power from the thrust lever switches (AMM 76-11-03/201).
(4) S 045-035-N00Do the deactivation procedure for the autothrottle servomotor (AMM 76-11-03/201).
(5) S 035-004-N00Remove the switch covers for the thrust lever assembly (AMM 76-11-03/201).
(6) S 035-040-N00Remove the ceiling panels in the main passenger cabin to get access to the connector plugs below the control stand (AMM 25-22-01/401).
(7) S 035-005-N00Disconnect the connector, D41291 (WDM 34-61-13).
(8) S 865-006-N00Make sure the autothrottle disconnect levers are in the usual (down) position.
(9) S 485-007-N00Connect the ohmmeter to the connector junction, pins 32 and 34.
S 765-008-N00
(10)
Make sure there is continuity between the pins 32 and 34.
S 765-009-N00
(11)
Do a check of the autothrottle disconnect switch, S7.
(a) Make sure the switch does not operate at the mid-travel position: 1) Push and hold the disconnect lever of the No. 1 thrust
lever 0.10 inch (2.54 mm) forward, to the mid-travel
position. 2) Make sure that there is continuity between pins 32 and 34. 3) Release the disconnect lever.
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(b) Make sure the switch operates at the full-travel position: 1) Push and hold the disconnect lever of the No. 1 thrust
lever all the way forward. 2) Make sure that there is no continuity between pins 32 and
34.
3) Release the disconnect lever.
S 765-010-N00
(12) Do a check of the autothrottle disconnect switch, S9.
(a) Make sure the switch does not operate at the mid-travel position: 1) Push and hold the disconnect lever of the No. 4 thrust
lever 0.10 inch (2.54 mm) forward, to the mid-travel
position . 2) Make sure that there is continuity between pins 32 and 34. 3) Release the disconnect lever.
(b) Make sure the switch operates at the full-travel position: 1) Push and hold the disconnect lever of the No. 4 thrust
lever all the way forward. 2) Make sure that there is no continuity between pins 32 and
34.
3) Release the disconnect lever.
S 085-011-N00
(13)
Remove the ohmmeter from the connector junction, pins 32 and 34.
S 485-012-N00
(14)
Connect the ohmmeter to the connector junction, pins 33 and 34.
S 765-013-N00
(15)
Make sure there is no continuity between pins 33 and 34.
S 765-014-N00
(16)
Do a check of the autothrottle reset switch, S8.
(a)
Make sure the switch does not operate at the mid-travel position: 1) Push and hold the disconnect lever of the No. 1 thrust
lever 0.10 inch (2.54 mm) forward, to the mid-travel position. 2) Make sure that there is no continuity between pin 33 and pin 34. 3) Release the disconnect lever.
(b)
Make sure the switch operates at the full-travel position: 1) Push and hold the disconnect lever of the No. 1 thrust
lever all the way forward. 2) Make sure that there is continuity between pin 33 and pin
34.
3) Release the disconnect lever.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 发动机控制 ENGINE CONTROLS(64)
