(a)
 FOR 1000EM1
 437AL, 438AR.

 (b)
 FOR 1000EM2
 447AL, 448AR.

 (2)
 Remove the thrust reverser cowl doors (Ref. TASK 78-32-11-000-040):

 (a)
 FOR 1000EM1
 451AL, 452AR.

 (b)
 FOR 1000EM2
 461AL, 462AR.

 (3)
 Remove the engine (Ref. TASK 71-00-00-000-040).

 Subtask 54-50-00-020-054

R  G. Removal of the Access Panels
R  (1) For the left pylon: 413EL, 471AL, 471BL 471CL, 472BR, 472AR 414FR, 414CR, 414AR.
R  (2) For the right pylon: 424AR, 424CR, 424ER 482AR, 482BR, 482CR 423FL, 481AL, 481BL.
R  (3) For the left wing: 521BT, 521EB.
R  (4) For the right wing: 621BT, 621EB.
 Subtask 54-50-00-020-052
 H. Removal of the Fairings
 (1) Remove the aft movable fairing (Ref. TASK 54-55-00-000-001).
 (2) Remove the lower fairing (Ref. TASK 54-56-00-000-001).
 (3) Remove the aft fixed fairing (Ref. TASK 54-54-00-000-001).
 (4) Put a container in position under the disconnected hydraulic lines.
 Subtask 54-50-00-020-053
 J. Removal of the Fire Extinguisher Bottles
 (1) Remove the fire extinguisher bottles (Ref. TASK 26-21-41-000-001).

 4. Procedure
_________

R NOTE : This procedure is applicable to the left pylon. Data between
____ R parentheses are for the right pylon
 Subtask 54-50-00-020-055
 A. Disconnection of the Fuel/Defuel System Components
 (1) Disconnect the fuel recirculation check valve:
 (Ref. Fig. 401/TASK 54-50-00-991-001) R (a) Put a container below the check-valve.
 (b)
 Remove the nut (7) and the bolt (6).

 (c)
 Disconnect the bonding strip (8).

 (d)
 Remove and discard the lockwire from the bolts (5).

 (e)
 Remove the bolts (5), the washers (4) and the plates (2) and (1).

 (f)
 Remove and discard the seal (3).

 (g)
 Disengage the flange from the recirculation check valve 122QM (123QM).

 (2) Disconnect the fuel line coupling at RIB09:
 (Ref. Fig. 402/TASK 54-50-00-991-005)

 (a)
 Remove the nut (6), the bolts (7) and the bonding braids (5).

 (b)
 Remove the nuts (10), the bolts (9) and the clamps (1).

 (c)
 Disengage the sleeves (8) from the clamp (16).

 (d)
 Remove the O-rings (15) and discard them.

 (e)
 Remove and discard the lockwire from the connector (12) and the nuts (2) and (13).

 (f)
 Loosen the nuts (2) and (13).

 (g)
 Remove the ring retainers (3) and (4).

 (h)
 Disengage the connector (12) from the clamp (16).

 (i)
 Remove the O-rings (11) and (14) and discard them.

 Fuel System - Recirculation Check - Valve Junction Figure 401/TASK 54-50-00-991-001
 1EFF : 1 1R 1CES  ALL  1 11 1 54-50-00 Page 407 Nov 01/03

 Fuel System - Pylon-to-Wing Junction
 Figure 402/TASK 54-50-00-991-005
 1EFF :  ALL  1  54-50-00 Page 408 
1  1  Feb 01/98
 1  1
 1CES  1

 (j) Remove the clamp (16).
 Subtask 54-50-00-020-056

 B. Disconnection of the Bleed Air Duct
 (Ref. Fig. 403/TASK 54-50-00-991-006)

R (1) Disconnect the temperature sensor (21) 6HA2 (6HA1).
 (2) Loosen the clamps (22) and (24) and remove the sleeve assembly (23).
 (3) Put blanking plugs on the disconnected line ends.
 Subtask 54-50-00-020-057

 C. Disconnection of the Electrical Lines
 (1) Disconnect the feeder cables from the right side of the pylon: (Ref. Fig. 404/TASK 54-50-00-991-012)
 (a)
 Remove the bolts (37) and the plate (38).

 (b)
 Remove the nuts (39), the bolts (41) and the washers (40).

 (c)
 Disconnect the tension regulator cable (32) from the engine electrical box 401VC.

 (d)
 Remove the bolt (34), the washer (33).

 (e)
 Remove the nut (46), the washer (47) and the bolt (35).

 (f)
 Disengage the cable (32) with its clamps (31), (36) from the pylon secondary structure.

 (g)
 Put blanking caps on the disconnected electrical connectors.
　
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