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757 MAINTENANCE MANUAL
TASK 30-11-06-202-023
4. Inspection and Adjustment of Flexible Couplings
_______________________________________________
A. Equipment
(1) Source of Compressed Air - Commercially
Available
B. Consumable Materials
(1)
Use one of these solvents:
(a)
B00184 Cleaning Solvent, Presealing,
BMS 11-7
(b)
B00148 Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
(c)
B00742 1,1,1, - Trichloroethane, 0-T-620
(2)
G00033 Wiper, Absorbent, BMS 15-5 Class A
(3)
G02185 Parting Agent, 598-5002, Green
Strippable Coating
(4)
A00474 Dow Corning 93-006 Silicone Sealant
(5)
C00580 Dow Corning 1200 Primer
(6)
G00270 Masking Tape
C. References
(1)
06-44-00/201, Wings Access Doors and Panels
(2)
27-81-00/201, Leading Edge Slat System
(3)
78-31-00/201, Thrust Reverser System
D. Access
(1)
Location Zones
511/521 Leading Edge to Front Spar (Left)
611/621 Leading Edge to Front Spar (Right)
(2)
Access Panels
523AL/522JL
524AL/523HL
623AR/622JR
624AR/623HR
E. Procedure
S 842-024
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY OR DAMAGE.
(1)
Do the Thrust Reverser Deactivation for Ground Maintenance procedure (Ref 78-31-00).
(2)
Do the Slat Drive System Deactivation procedure (Ref 27-81-00).
S 012-026
(3)
Remove the necessary access panels (Ref 06-44-00): 524AL, 523AL, 624AR, or 623AR.
S 842-025
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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757 MAINTENANCE MANUAL
S 212-027
(4) Examine the retainer assembly to make sure the clamp is tight and on the center of the primer strip.
NOTE:____ The primer strip is 4 inches inboard from the flange of the retainer assembly.
S 822-028
(5) If the clamp is loose or is not on the center of the primer strip, do these steps: (a) Remove the adjacent access panel (Ref 06-44-00): 523HL, 522JL, 623HR, or 622JR. (b) Remove the clamp from the flexible coupling. (c) Move the flexible coupling onto the spray tube. 1) Examine the seal. 2) If necessary, replace the seal. (d) Move the flexible coupling onto the retainer assembly. 1) Examine the other seal. 2) If necessary, replace the other seal. (e) Move the flexible coupling back to its initial position. (f) Install the clamp on the flexible coupling. (g) Move the clamp to the center of the primer strip on the retainer assembly. (h) Torque the clamp fastener to 15-20 pound-inches. (i) If you can turn the clamp after you torque the clamp fastener, replace the clamp.
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