(12)
Inboard Strut, Aft Midspar - Leak Check (S4)
(13)
Clean the Strut Drains
B. The T1 and T2 leak checks make sure the tubes in the strut do not have leaks.
C. The S1 - S4 leak checks make sure that the strut structure does not have leaks.
D. You can do each of the leak check tasks independently after you do maintenance on areas of the struts.
E. If you do more than one leak check, you can leave the access panels open until you complete the last task on that strut.
F. All the nacelle stations (NSTA) numbers that are shown in Figures 201 - 204 and referenced in the procedure are approximate.
TASK 54-53-00-702-045
2. Outboard Strut, Forward Tube - Leak Check (T1)______________________________________________
A. General
(1) This task gives instuctions on how to do a leak check (T1) of the forward drain tube on the outboard engine strut.
B. Equipment
(1)
Water source - low pressure, can spray up to 2 quarts (1.9 liters) per minute
(2)
Container - 5 gallon (19 liter) capacity, can collect and measure water to within 1 fluid ounce (30 ml) (measure can be done in smaller containers)
(3)
Funnel - long necked
C. References
(1)
AMM 08-00-00/201, Leveling and Weighing
(2)
AMM 27-81-00/201, Leading Edge Flaps
(3)
AMM 51-31-01/201, Seals and Sealing
(4)
AMM 54-62-00/201, Nacelle Strut Access Panels
(5)
AMM 71-11-04/201, Fan Cowl Panels
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MAINTENANCE MANUAL
UPPER WING LEADING EDGE COVER
ACCESS DOOR
NO. 3 FORWARD
521FT/621FT
REVERSER STAHALVES
164 OUTBOARD STRUTS
(ENGINES 1 AND 4)
Outboard Struts Drain Access
Figure 201
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MAINTENANCE MANUAL
CLOSURE SPAR
BULKHEAD
DRAIN INLET
VAPOR
Outboard Struts Drain Locations
Figure 202
E25074
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MAINTENANCE MANUAL
(6)
AMM 71-11-06/201, Core Cowl Panels
(7)
AMM 78-31-00/201, Thrust Reverser System
D. Access
(1)
Location Zone
451 Nacelle Strut 1 - Forward Fairing
452 Nacelle Strut 1 - Torque Box
481 Nacelle Strut 4 - Forward Fairing
482 Nacelle Strut 4 - Torque Box
(2)
Access Panel 452AL Core Cowl to Strut Access Door - Engine 1 452CL Midspar Pressure Relief Access Door - Engine 1 452EL Upper Midspar Pressure Relief Access Door - Engine 1 482AL Core Cowl to Strut Access Door - Engine 4 482CL Midspar Pressure Relief Access Door - Engine 4 452EL Upper Midspar Pressure Relief Access Door - Engine 4
E. Prepare for the Leak Check (T1 - Outboard)
S 042-333
WARNING: DO THE DEACTIVATION PROCEDURE TO PREVENT THE OPERATION OF THE
_______ THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1)
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).
S 012-046
(2)
Open the left and right fan cowl panels (AMM 71-11-04/201).
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