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(3) Measure the backlash of the ballscrew and ballscrew nut:
(a) Move the handles of the lever and clamp tool together until the dial indicator stops.
NOTE: This will apply a load to the ballscrew nut, and move it forward on the ballscrew.
(b) Use the dial indicator to measure the movement of the ballscrew nut.
NOTE: The movement of the ballscrew nut is the backlash.
(c) Do these steps a total of five times to make sure the movement of the dial indicator is
repeatable.
SUBTASK 27-51-32-960-002
(4) If the backlash is more than 0.0073 inch (0.185 millimeter), then replace the ballscrew assembly.
These are the tasks:
Inboard Flap Inboard Ballscrew and Gimbal Removal, TASK 27-51-32-000-802,
Inboard Flap Inboard Ballscrew and Gimbal Installation, TASK 27-51-32-400-802.
SUBTASK 27-51-32-080-002
(5) Remove the dial indicator assembly and the lever and clamp tool from the ballscrew.
G. Put the Airplane Back to Its Usual Condition
SUBTASK 27-51-32-440-004
(1) Do this task: Trailing Edge Flap System Reactivation, TASK 27-51-00-440-801.
SUBTASK 27-51-32-860-014
(2) 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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Inboard Flap Inboard Ballscrew and Gimbal Inspection
Figure 602 (Sheet 1 of 2)/27-51-32-990-804
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Inboard Flap Inboard Ballscrew and Gimbal Inspection
Figure 602 (Sheet 2 of 2)/27-51-32-990-804
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OUTBOARD FLAP TRANSMISSIONS - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the outboard transmission for the outboard flap
(2) An installation of the outboard transmission for the outboard flap
(3) A removal of the inboard transmission for the outboard flap
(4) An installation of the inboard transmission for the outboard flap.
TASK 27-51-41-000-801
2. Outboard Flap Outboard Transmission Removal
(Figure 401)
A. General
(1) This task is applicable to the transmissions at flap supports No. 1 and 8.
B. References
Reference Title
27-51-00-040-801 Trailing Edge Flap System Deactivation (P/B 201)
27-51-00-860-803 Extend the Trailing Edge Flaps (P/B 201)
27-51-00-980-801 Trailing Edge Flap System Manual Operation (P/B 201)
27-51-28-000-802 Outboard Flap Outboard Support Aft Fairing Removal (P/B 401)
27-58-01-000-801 Flap Position Transmitter Removal (P/B 401)
C. Location Zones
Zone Area
544 Left Wing - Fairing Flap Support No. 1
567 Left Wing - Outboard Flap
644 Right Wing - Fairing Flap Support No. 8
667 Right Wing - Outboard Flap
D. Prepare for the Removal
SUBTASK 27-51-41-860-001
(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 27-51-41-040-001
(2) Do this task: Trailing Edge Flap System Deactivation, TASK 27-51-00-040-801.
SUBTASK 27-51-41-010-001
(3) Do this task: Outboard Flap Outboard Support Aft Fairing Removal, TASK 27-51-28-000-802.
E. Outboard Flap Outboard Transmission Removal
SUBTASK 27-51-41-980-001
(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 27-51-41-020-001
(2) Do this task: Flap Position Transmitter Removal, TASK 27-58-01-000-801.
SUBTASK 27-51-41-020-002
(3) Disconnect the torque tube [9] from the transmission assembly [4]:
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(a) Remove the screws [11] that attach the coupling sleeve [8] to the splined coupling [10] on
the torque tube [9].
(b) Move the coupling sleeve [8] off the splined coupling [10].
SUBTASK 27-51-41-020-003
(4) Disconnect the aft flap drive rod [6] from the drive rod attach fitting [37]:
　
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