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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
LEADING EDGE SLAT ACTUATOR - INSPECTION/CHECK
1. General
A. There is one task in this procedure. The procedure has this task:
(1) A visual check of the leading edge slat actuator lock indicator.
TASK 27-81-41-200-802
2. Leading Edge Slat Actuator Lock Indicator Visual Check
(Figure 601)
A. References
Reference Title
27-81-00-080-801 Leading Edge Flap and Slat Locks Removal (P/B 201)
27-81-00-480-801 Leading Edge Flap and Slat Locks Installation (P/B 201)
29-11-00-860-801 Hydraulic System A or B Pressurization (P/B 201)
29-11-00-860-805 Hydraulic System A or B Power Removal (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-1734 Lockout Set - Leading Edge Slats and Krueger Flaps Actuators
(Part #: C27051-29, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
(Opt Part #: C27051-1, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -BBJ)
C. Location Zones
Zone Area
522 Left Wing - Slat No. 4
523 Left Wing - Slat No. 3
524 Left Wing - Slat No. 2
525 Left Wing - Slat No. 1
622 Right Wing - Slat No. 5
623 Right Wing - Slat No. 6
624 Right Wing - Slat No. 7
625 Right Wing - Slat No. 8
D. Prepare for the Visual Check
SUBTASK 27-81-41-860-001
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE FLIGHT CONTROL
SURFACES, THE THRUST REVERSERS, AND THE LANDING GEAR. THESE
COMPONENTS CAN MOVE SUDDENLY WHEN YOU SUPPLY HYDRAULIC POWER.
THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) To pressurize hydraulic system B, do this task: Hydraulic System A or B Pressurization,
TASK 29-11-00-860-801.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-81-41
Page 601
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-81-41-860-002
WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING EDGE FLAPS
AND SLATS AND THE TRAILING EDGE FLAPS. THE FLAPS AND SLATS WILL EXTEND.
THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
CAUTION: MAKE SURE THE INBOARD FAN DUCT COWL AND THE INBOARD AND OUTBOARD
THRUST REVERSERS ARE CLOSED OR REMOVED BEFORE YOU EXTEND THE
LEADING EDGE FLAPS AND SLATS. THERE IS NOT SUFFICIENT CLEARANCE FOR
THE FLAPS AND SLATS TO EXTEND IF THE INBOARD FAN DUCT COWL AND THE
INBOARD AND OUTBOARD THRUST REVERSERS ARE IN THE OPEN POSITION. THIS
CAN CAUSE DAMAGE TO EQUIPMENT.
(2) Move the flap control lever to the 10-unit position.
(a) Make sure the leading edge slats move to the full extend position.
SUBTASK 27-81-41-480-001
(3) Install the lockout set, SPL-1734 on the adjacent leading edge slats. To install it, do this task:
Leading Edge Flap and Slat Locks Installation, TASK 27-81-00-480-801.
E. Leading Edge Slat Actuator Lock Indicator Visual Check
SUBTASK 27-81-41-010-001
(1) Remove the slat actuator door [8] from the slat actuator [9]:
(a) Remove the bolts [4], washers [5], washers [6] and nuts [7] that attach the slat actuator door
[8] to the slat actuator [9].
(b) Remove the bolts [1], washers [2] and nuts [3] that attach the slat actuator door [8] and the
bracket to the slat actuator [9].
(c) Remove the slat actuator door [8].
(d) Temporarily install the bolts [1], washers [2] and nuts [3] to attach the bracket to the slat
actuator [9].
SUBTASK 27-81-41-280-001
(2) Do a visual check of the leading edge slat actuator lock indicator:
(a) Move the flap control lever to the UP detent position to retract the slats.
(b) Make sure the lock indicator hole is open.
(c) Put a 0.115-0.125 inch (2.92-3.18 millimeters) diameter steel rod in the lock indicator hole.
(d) Move the flap control lever to the 1-unit detent position.
(e) Make sure the actuator is not locked and extends to the extend position.
(f) Remove the steel rod from the lock indicator hole.
(g) Make sure the lock indicator hole is not open.
SUBTASK 27-81-41-410-001
(3) Install the slat actuator door [8] on the slat actuator [9].
(a) Remove the bolts [1], washers [2] and nuts [3] that attach the bracket to the slat actuator [9].
1) If there are three washers installed on the bolts [1], discard the thicker aluminum
washer.
　
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