Removal of the Pylon Power Feeder-Cables

TASK 24-92-00-000-804-A
Removal of the Pylon Power Feeder-Cables

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 411
ZONE: 414
ZONE: 421
ZONE: 424
ZONE: 436
ZONE: 446

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
411	PYLON LEADING EDGE
414	UPPER FWD PYLON
421	PYLON LEADING EDGE
424	UPPER FWD PYLON
436	FAN AND ACCESSORY GEARBOX
446	FAN AND ACCESSORY GEARBOX
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
411AL, 414AR, 437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
421AL, 424AR, 447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-00-00-480-002-A	Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 54-52-11-000-807-A	Removal of the Access Skin Panels
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
Pylon Power Feeder-Cables

3. Job Set-up
Subtask 24-92-00-941-075-A

A. Safety Precautions
(1) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(2) On the ENG section of maintenance panel 50VU:

Make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton switch is off.
Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

(3) On ENG panel 115VU:

Make sure that the ENG/MODE selector switch is in the NORM position.
Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
Put a WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.

(4) On FLAPS panel 114VU:

Put the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
Put a WARNING NOTICE(S) on the flap/slat control lever to tell persons not to operate the flap/slat controls.

Subtask 24-92-00-010-189-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position on the right side of the engine.

4. Procedure
Subtask 24-92-00-020-053-A

A. Removal of the Pylon Power Feeder-Cables from the upper forward pylon-interface terminal-block
(1) Disconnect the pylon power feeder-cables (2) from the upper forward pylon-interface terminal-block (26).
(a) Remove the three bolts (29) and cover (28) from the upper forward pylon-interface terminal-block (26).
(b) Remove the four nuts (27) from the upper forward pylon-interface terminal-block (26).
(c) Loosen the two bolts (24) from the bar clamp (25).
(d) Remove the four pylon power feeder-cables (2) from the upper forward pylon-interface terminal-block (26).
(e) Disengage the four pylon power feeder-cables (2) out of the top half of the bar clamp (25).
1 Carefully pull the four pylon power feeder-cables (2) from the bar clamp (25).
(f) If you install the same four pylon power feeder-cables (2):
1 Make marks on the four pylon power feeder-cables (2) (4 (white), 1 (blue), 2 (yellow) and 3 (red)) for the subsequent installation.
(g) Remove the bolt (21), washer (19) and nut (22) from the clamp (17).
(h) Disconnect the clamp (17) from the support bracket (15).
(i) Disengage the pylon power feeder-cables (2) from the clamp (17).

Subtask 24-92-00-410-199-A

B. Close Access
(1) Remove the access platform(s).
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position on the right side of the engine.
(4) Remove the access doors (Ref. AMM TASK 54-52-11-000-807):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
411AL 414AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
421AL 424AR

Subtask 24-92-00-020-054-A

C. Removal of the Pylon Power Feeder-Cables from the pylon interface terminal-block
(1) Disconnect the pylon power feeder-cables (2) from the pylon interface terminal-block (1).
(a) Cut and remove the lockwire from the cover.

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

1 Cut and remove the lockwire (7) from the cover (8).
(b) Remove the two bolts (6) and the cover (8) from the pylon interface terminal-block (1).
(c) Remove the four nuts (5) and locking washers (4) from the pylon interface terminal-block (1).
(d) Remove the four wing power feeder-cables (3) from the pylon interface terminal-block (1).
(e) Remove the four pylon power feeder-cables (2) from the pylon interface terminal-block (1).
(f) If you install the same four pylon power feeder-cables (2):
1 Make marks on the four pylon power feeder-cables (2) (4 (white), 1 (blue), 2 (yellow) and 3 (red)) for the subsequent installation.
(g) Remove the two bolts (9), washers (10) and nuts (12) from the fire seal (11).
(h) Remove the fire seal (11) from the rib (13).
(i) Remove the bolt (20) and washer (18) from the clamp (16).
(j) Disconnect the clamp (16) from the support bracket (14).
(k) Disengage the pylon power feeder-cables (2) from the clamp (16).
(2) Remove the pylon power feeder-cables (2) from the pylon.

[Rev.10 from 2021] 2026.04.01 12:38:30 UTC