(b) Remove the lock pin from the NGS shutoff valve body.
NOTE: The manual lock pin is attached to the NGS shutoff valve with a lanyard.
(c) Install the lock pin through the hole in the manual lock arm.
(d) Tighten the lock pin to 27 ±2 in-lb (3 ±0 N·m).
(7) Make sure that the NGS inoperative condition is recorded.
F. Put the Airplane Back to the Usual Condition.
SUBTASK 47-00-00-860-010
(1) Remove the DO-NOT-OPERATE tags from the L PACK and R PACK selector switches.
(a) Put the L PACK and R PACK selector switches to the AUTO position.
SUBTASK 47-00-00-410-004
(2) Close this access panel:
Number Name/Location
192CL ECS Access Door
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-00-00
Page 903
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 402, 452, 509, 510, 523, 525-528, 568, 569, 576, 577, 581, 583, 585, 588-590,
592-599, 601-603, 606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 971, 980-999;
ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405,
406, 409, 410, 412, 416, 424, 425, 427-429, 451, 501-504, 507, 508, 512-514, 516, 518,
524, 531-533, 535-537, 541, 542, 552-556, 560-562, 567, 571-575, 671, 672, 686, 703,
707-710, 803-813, 821, 822, 831, 832, 836, 837, 841, 842, 851, 852, 854-858, 861-863,
871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003
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