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737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-61-21
Page 409
Oct 10/2006
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SPOILER RATIO CHANGER - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the spoiler ratio changer.
(2) An installation of the spoiler ratio changer.
TASK 27-61-31-000-801
2. Spoiler Ratio Changer Removal
(Figure 401)
A. References
Reference Title
27-61-00-800-801 Spoiler Hydraulic Systems A and B Pressurization (P/B 201)
27-61-00-840-801 Put the Spoiler Hydraulic systems A and B Back to the Condition
Before the Pressurization (P/B 201)
27-61-21-000-801 Spoiler Mixer Removal (P/B 401)
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-1569 Clamp - Control Cable
(Part #: A20005-9, Supplier: 81205, A/P Effectivity: 737-100, -200,
-200C, -300, -400, -500, -600, -700, -700C, -700ER, -700QC, -800, -900,
-900ER, -BBJ)
C. Location Zones
Zone Area
112 Area Forward of Nose Landing Gear Wheel Well
113 Area Above and Outboard of Nose Landing Gear Wheel Well - Left
114 Area Above and Outboard of Nose Landing Gear Wheel Well - Right
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
D. Access Panels
Number Name/Location
112A Forward Access Door
E. Prepare for the Removal
SUBTASK 27-61-31-860-001
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS,
ELEVATORS, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS
CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Do this task: Spoiler Hydraulic Systems A and B Pressurization, TASK 27-61-00-800-801.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-61-31
Page 401
Oct 10/2006
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-61-31-860-002
(2) Move the speed brake lever to the DOWN position.
SUBTASK 27-61-31-860-003
(3) Do this task: Put the Spoiler Hydraulic systems A and B Back to the Condition Before the
Pressurization, TASK 27-61-00-840-801.
SUBTASK 27-61-31-020-001
(4) Do this task: Spoiler Mixer Removal, TASK 27-61-21-000-801.
F. Spoiler Ratio Changer Removal
SUBTASK 27-61-31-020-002
(1) If you will install a new spoiler ratio changer [8], remove the two-bolt couplings from the spoiler
ratio changer [8].
(a) Remove nuts [24], washers [23], bolts [22] and couplings [21].
(b) Remove nuts [28], washers [27], bolts [26] and coupling [25].
SUBTASK 27-61-31-020-003
(2) Disconnect the spoiler control cables WSA1, WSA2 [5] and WSB1, WSB2 [7] from the left and
right spoiler output quadrants [18]:
(a) Install a control cable clamp, SPL-1569 on the spoiler control cables WSA1, WSA2 [5] and
on WSB1, WSB2 [7].
NOTE: This will keep a small tension on the control cables.
(b) Remove the lockstitch from the turnbuckles [6] in the main landing gear wheel well.
(c) Remove the lock clips from the turnbuckles [6].
(d) Release the tension in the spoiler control cables WSA1, WSA2 [5] and WSB1, WSB2 [7].
NOTE: Do not disconnect the turnbuckles [6].
(e) Attach a tag to the spoiler control cables WSA1, WSA2 [5] and WSB1, WSB2 [7] for
identification during the installation.
(f) Remove the spoiler control cables WSA1, WSA2 [5] and WSB1, WSB2 [7] from the spoiler
output quadrants [18].
SUBTASK 27-61-31-020-004
(3) Disconnect the speed brake control cables SBA [3] and SBB [2] from the speed brake input
quadrant [19]:
(a) Open this access panel:
Number Name/Location
112A Forward Access Door
(b) Remove the lock clips from the turnbuckles [1] in the lower nose compartment.
(c) Release the tension in the speed brake control cables SBA [3] and SBB [2].
NOTE: Do not disconnect the turnbuckles [1].
(d) Install a control cable clamp, SPL-1569 on the speed brake control cable SBA [3] and on
SBB [2] at the pressure seal in the main landing gear wheel well.
NOTE: This will keep a small tension on the cables.
(e) Attach a tag to the speed brake control cables SBA [3] and SBB [2] for identification during
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737-600-700-800-900 飞机维护手册6 AIRCRAFT MAINTENANCE MANUA(40)
