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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(j)
If there is continuity, bend the switch roller lever no more than 0.06 inch (1.5 mm).
(k)
If you bent the switch, do this alternate procedure again: Adjust the applicable go-around switches (S1, S3 or S5).
(l)
Move the 0.015 inch diameter wire to the opposite side of the stop pin and hold it in position (Fig. 402, View C, step 3).
(m)
Push the go-around lever on the No. 2 thrust lever all the way down then release it and let it to go back to the wire.
(n)
Do the continuity test of the switch again. 1) For switch S1, do a check for continuity between pins 4 and 5 of the connector plug, P13. 2) For switch S3, do a check for continuity between pins 1 and 3 of the connector plug, P19.
3) For switch S5, do a check for continuity between pins 1 and 3 of the connector, P20.
(o)
Remove the wire.
(p)
If there is no continuity again, bend the switch roller lever no more than 0.06 inch (1.5 mm).
(q)
If you bent the switch, do this alternate procedure again: Adjust the applicable go-around switches (S1, S3 or S5), but do not bend the switches again.
(r)
Install the applicable connector plugs, P13, P19 or P20, below the control stand.
S 824-044-N00
(7) Do these steps to adjust the applicable go-around switches (S2, S4 or S6) or do the recommended alternate procedure that follows:
(a)
Push the go-around lever on the number 3 thrust lever down 0.10 inch (2.5 mm) to the mid travel position.
(b)
Make sure the switch did not operate.
NOTE:____You can hear a click when the switch operates. You also can do a check of the continuity as follows. The switch must be closed in the mid travel position.
1) Remove the ceiling panels in the main passenger cabin to get access to the connector plugs below the control stand (AMM 25-22-01/401).
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76-12-02
ALL ú ú N01 Page 413 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
2) Disconnect the applicable connector plug and do a check of the continuity for the applicable switch as follows: a) For switch S2, do a check of the continuity between
pins 4 and 5 of the connector plug, P14. b) For switch S4, do a check of the continuity between pins 1 and 3 of the connector plug, P21. c) For switch S6, do a check of the continuity between pins 1 and 3 of the connector, P22.
(c)
If the switch operated (there is no continuity), loosen the screws that attach the switch to the thrust lever.
(d)
Move the switch away from the lever and tighten the screws.
(e)
If you moved the switch, repeat this procedure: Adjust the applicable go-around switches (S2, S4 or S6).
(f)
If the switch operates again, (there is no continuity), bend the switch roller lever no more than 0.06 inch (1.5 mm).
(g)
If you bent the switch, repeat this procedure: Adjust the applicable go-around switches (S2, S4 or S6).
(h)
Push the go-around lever on the No. 3 thrust lever to its full travel position and hold.
(i)
Make sure that the switch did operate.
NOTE:____You can hear a click when the switch operates. You also can do a check of the continuity as follows.
1) For switch S2, make sure that there is no continuity between pin 4 and pin 5 of connector P14. 2) For switch S4, make sure that there is no continuity between pin 1 and pin 3 of connector P21. 3) For switch S6, make sure that there is no continuity between pin 1 and pin 3 of connector P22.
(j) Install the applicable connector plugs, P14, P21 or P22, below the control stand.
S 824-062-N00
(8) Do this recommended alternate procedure to adjust the applicable go-around switches (S2, S4 or S6) as follows:
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