VORTEX GENERATOR ASSEMBLY - REMOVAL/INSTALLATION
1. General
A. This procedure contains two tasks:
(1) The removal of the vortex generator assembly.
(2) The installation of the vortex generator assembly.
B. The vortex generator assembly is installed on the left and right side of the fuselage above the
horizontal stabilizer. The function of the vortex generators are to increase the efficiency of the airflow
over the flying surface.
TASK 53-31-21-000-801
2. Vortex Generator Assembly Removal
(Figure 401)
A. 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
STD-1064
Scraper - Phenolic, Hard Resin
B. Location Zones
Zone Area
300 Empennage
C. Access Panels
Number Name/Location
311BL Stabilizer Trim Access Door
D. Prepare for the Removal
SUBTASK 53-31-21-010-001
WARNING
MAKE SURE THAT ALL PERSONNEL, AND EQUIPMENT ARE AWAY FROM
THE HORIZONTAL STABILIZER. THE MOVEMENT OF THE HORIZONTAL
STABILIZER DURING MAINTENANCE CAN CAUSE INJURY TO PERSONNEL,
AND DAMAGE TO EQUIPMENT.
(1) Use the switches on the control wheel to set the leading edge of the horizontal stabilizer to the
full down (airplane nose up) position.
SUBTASK 53-31-21-860-001
(2) Open these circuit breakers and install safety tags:
CAPT Electrical System Panel, P18-1
Row Col Number Name
C 2 C00849 AFCS STABILIZER TRIM
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-31-21
Page 401
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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