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27-51-18-000-802 Inboard Flap Support Aft Fairing Removal (P/B 401)
32-00-01-480-801 Landing Gear Downlock Pins Installation (P/B 201)
C. Location Zones
Zone Area
542 Left Wing - Fairing Flap Support No. 3
553 Left Wing - Inboard Flap
642 Right Wing - Fairing Flap Support No. 6
653 Right Wing - Inboard Flap
D. Prepare for the Removal
SUBTASK 27-51-32-860-001
(1) Extend the trailing edge flaps to the 40-unit position. To extend them, do this task: Extend the
Trailing Edge Flaps, TASK 27-51-00-860-803.
SUBTASK 27-51-32-480-006
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 27-51-32-040-001
(3) Do this task: Trailing Edge Flap System Deactivation, TASK 27-51-00-040-801.
SUBTASK 27-51-32-010-001
(4) Do this task: Inboard Flap Support Aft Fairing Removal, TASK 27-51-18-000-802.
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E. Inboard Flap Outboard Ballscrew and Gimbal Removal
SUBTASK 27-51-32-980-001
(1) Manually extend the trailing edge flaps to the downstop on the ballscrew. To extend them, do
this task: Trailing Edge Flap System Manual Operation, TASK 27-51-00-980-801.
SUBTASK 27-51-32-020-001
CAUTION: MAKE SURE YOU HOLD THE BALLSCREW WHILE YOU DISCONNECT IT. IF YOU LET
THE U-JOINT HOLD THE BALLSCREW, YOU WILL CAUSE DAMAGE TO THE U-JOINT.
(2) Disconnect the ballscrew assembly [1] with the gimbal assembly [12] from the carriage [3]:
(a) Install a support to hold the ballscrew assembly [1] when it is disconnected from the
carriage [3].
(b) Remove the nuts [9], washers [10] and bolts [2] that attach the carriage bushing [4] and
carriage bushing [11] to the carriage [3].
(c) Remove the carriage bushing [4] and carriage bushing [11] from the carriage [3].
(d) Move the gimbal assembly [12] away from the carriage [3].
SUBTASK 27-51-32-020-002
(3) Disconnect the ballscrew assembly [1] from the yoke [17] on the transmission [15]:
(a) Remove the nuts [21], washers [20], washers [19] and bolts [18] that attach the ballscrew
assembly [1] to the yoke [17].
(b) Remove the ballscrew assembly [1] from the yoke [17].
NOTE: You can turn the ballscrew assembly [1] and the gimbal assembly [12] to remove
the ballscrew [62].
(c) Remove the ballscrew assembly [1] with the gimbal assembly [12].
SUBTASK 27-51-32-020-003
(4) If it is necessary, remove the gimbal assembly [12] from the ballscrew nut [22]:
(a) Remove the bolts [13], washers [6] and collars [7] that attach the gimbal bushings [8] to the
gimbal assembly [12].
(b) Remove the gimbal assembly [12] from the ballscrew nut [22].
------------------------- END OF TASK ---------------------------
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Inboard Flap Outboard Ballscrew and Gimbal Installation
Figure 401 (Sheet 1 of 3)/27-51-32-990-801
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Figure 401 (Sheet 2 of 3)/27-51-32-990-801
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Inboard Flap Outboard Ballscrew and Gimbal Installation
Figure 401 (Sheet 3 of 3)/27-51-32-990-801
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TASK 27-51-32-400-801
3. Inboard Flap Outboard Ballscrew and Gimbal Installation
(Figure 401)
A. General
(1) This task is applicable to the ballscrew and gimbal at flap supports No. 3 and 6.
B. References
Reference Title
　
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