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SUBTASK 27-51-32-860-012
(3) Retract the trailing edge flaps to the retracted position, do this task: Retract the Trailing Edge
Flaps, TASK 27-51-00-860-804.
------------------------- END OF TASK ---------------------------
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Page 603
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Inboard Flap Outboard Ballscrew and Gimbal Inspection
Figure 601 (Sheet 1 of 2)/27-51-32-990-803
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Page 604
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Inboard Flap Outboard Ballscrew and Gimbal Inspection
Figure 601 (Sheet 2 of 2)/27-51-32-990-803
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TASK 27-51-32-220-802
3. Inboard Flap Inboard Ballscrew Inspection
(Figure 602)
A. General
(1) This task is applicable to the ballscrew and gimbal at flap supports No. 4 and 5.
B. References
Reference Title
27-51-00-040-801 Trailing Edge Flap System Deactivation (P/B 201)
27-51-00-440-801 Trailing Edge Flap System Reactivation (P/B 201)
27-51-00-860-803 Extend the Trailing Edge Flaps (P/B 201)
27-51-00-860-804 Retract the Trailing Edge Flaps (P/B 201)
27-51-32-000-802 Inboard Flap Inboard Ballscrew and Gimbal Removal (P/B 401)
27-51-32-400-802 Inboard Flap Inboard Ballscrew and Gimbal Installation (P/B 401)
32-00-01-480-801 Landing Gear Downlock Pins Installation (P/B 201)
C. 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-1753 Equipment - Test, Flap Screw Backlash
(Part #: C27030-49, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
D. Location Zones
Zone Area
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
541 Left Wing - Fairing Flap Support No. 4
641 Right Wing - Fairing Flap Support No. 5
E. Prepare for the Inspection
SUBTASK 27-51-32-860-013
(1) Extend the trailing edge flaps to the 15-unit position. To extend them, do this task: Extend the
Trailing Edge Flaps, TASK 27-51-00-860-803.
SUBTASK 27-51-32-480-005
WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEAR.
WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR CAN RETRACT AND CAUSE
INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) If the downlock pins are not installed in the nose and main landing gear, do this task: Landing
Gear Downlock Pins Installation, TASK 32-00-01-480-801.
SUBTASK 27-51-32-040-004
(3) Do this task: Trailing Edge Flap System Deactivation, TASK 27-51-00-040-801.
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F. Inboard Flap Inboard Ballscrew Backlash Check
SUBTASK 27-51-32-480-003
(1) Install the lever and clamp tool on the ballscrew:
NOTE: The lever and clamp tool is a part of the tester, SPL-1753.
(a) Put the lever and clamp tool in its position on the ballscrew aft of the ballscrew nut.
NOTE: Make sure the load surfaces of the lever and clamp tool touch the aft side of the
ballscrew nut.
(b) Tighten the clamp-up bolt to 200-300 pound-inches (22.6 to 33.8 newton-meters).
NOTE: Make sure the handles of the lever and clamp tool are in the relaxed position.
SUBTASK 27-51-32-480-004
(2) Install the dial indicator assembly on the ballscrew:
NOTE: The dial indicator assembly is a part of the tester, SPL-1753.
(a) Put the dial indicator assembly on the ballscrew.
NOTE: Make sure the pointer touches the forward end of the ballscrew nut.
(b) Put the strap around the ballscrew to help hold the dial indicator assembly on the
ballscrew.
(c) Adjust the dial indicator to zero.
SUBTASK 27-51-32-220-002
　
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