TASK 53-31-31-000-803
4. Stabilizer-to-Body Lower Front Spar Sliding Seal Removal
Figure 401
A. References
Reference Title
27-31-00-800-802 Remove Pressure from the Elevator Hydraulic Systems A and B
(P/B 201)
B. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
SPL-1672 Assembly - Lock, Stabilizer Trim
737-600, -700, -800
Part #: F71336-501 Supplier: 81205
C. Location Zones
Zone Area
300 Empennage
D. Prepare for Removal
SUBTASK 53-31-31-860-030-002
(1) Do this task: Remove Pressure from the Elevator Hydraulic Systems A and B,
TASK 27-31-00-800-802.
SUBTASK 53-31-31-860-031-002
(2) Set the stabilizer trim cutout switches to the CUTOUT position.
NOTE: The stabilizer trim cutout switches are installed on the control stand.
SUBTASK 53-31-31-860-032-002
(3) Open these circuit breakers and install safety tags:
CAPT Electrical System Panel, P18-1
Row Col Number Name
C 2 C00849 AFCS STABILIZER TRIM
CAPT Electrical System Panel, P18-2
Row Col Number Name
C 8 C00544 FLIGHT RECORDER POSITION SENSOR
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 15 C00644 EXTERIOR LIGHTING LOGO ILLUM
F/O Electrical System Panel, P6-2
Row Col Number Name
B 10 C00207 FLIGHT CONTROL STAB TRIM CONT
D 10 C00840 FLIGHT CONTROL STAB TRIM ACTUATOR
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-31-31
Config 2
Page 410
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 101, 151, 156-199, 332-399, 401, 402, 412, 425, 452, 491-500, 509, 510, 523, 525-528,
530, 553-557, 559-564, 567-569, 573-577, 581, 583, 585, 588-590, 592-599, 601-603, 606,
607, 610-615, 620, 625-627, 671, 672, 686, 691-699, 804-813, 821, 822, 831-838, 841,
842, 851, 852, 854-858, 861-863, 871-874, 947, 948, 968-973, 980-999; ILF 301, 304, 308,
310, 314, 315, 317-319, 323, 331, 405, 406, 409, 410, 416, 424, 427-429, 451, 501-504,
507, 508, 512-516, 518-520, 524, 531-533, 535-537, 541, 542, 552, 571, 572, 703,
707-710, 803 POST SB 737-53-1252