26-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Detector Engine_______________ Connector ________ To Pin_________ From Pin ______
Engine 1 DW3201A A3 A4
DW3207C C13 C15
Engine 2 DW3202E E9 E10
DW3208D D9 D10
Engine 3 DW3203A A3 A4
DW3209C C13 C15
Engine 4 DW3204E E9 E10
DW3210D D9 D10
S 422-018
(3) Install a jumper at pin 21 of the control cards for the effected engine.
NOTE: Use the extended tool, G26004-36 as an alternate method to
____
access to pin inside the M826 panel.
S 482-040
(4) Connect the multimeter from the engine strut connector, using the pins on the disconnect panel AW0305 shown in the table below, to the airplanes structure.
~............................................................. | ENGINE | FROM PIN LOC IN M826 | TO PIN LOC ON AW0305 | | POSITION .................................................. | | CONNECTOR | PIN | CONNECTOR | PIN | ............................................................... | 1 | A001 | 21 | D8511J | 2 | | | A002 | 21 | D8514J | 2 | | | A004 | 21 | D8511J | 1 | | | A005 | 21 | D8514J | 1 | ............................................................... | 2 | A006 | 21 | D8521J | 2 | | | A007 | 21 | D8514J | 2 | | | A009 | 21 | D8521J | 1 | | | A010 | 21 | D8524J | 1 | ............................................................... | 3 | A011 | 21 | D8531J | 2 | | | A012 | 21 | D8534J | 2 | | | A014 | 21 | D8531J | 1 | | | A015 | 21 | D8534J | 1 | ............................................................... | 4 | A016 | 21 | D8541J | 2 | | | A017 | 21 | D8544J | 2 | | | A019 | 21 | D8541J | 1 | | | A020 | 21 | D8544J | 1 | 2............….............…..........…..............…........1
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747-400 MAINTENANCE MANUAL
S 862-020
(5) Make sure the resistance between the pins on M826 panel and pins on the AW0305 disconnect panel, shown in the table, is not more than
0.008 ohms.
S 082-021
(6)
Remove the multimeter.
S 022-022
(7)
Remove the jumper from pin 21 of the control card.
S 422-026
(8)
Install the control cards for the affected engine
(AMM 26-10-01/401).
-
Set # 1 for engine 1: YLPA001, YLPA002, YLPA004, YLPA005
-
Set # 2 for engine 2: YLPA006, YLPA007, YLPA009, YLPA010
-
Set # 3 for engine 3: YLPA011, YLPA012, YLPA014, YLPA015
-
Set # 4 for engine 4: YLPA016, YLPA017, YLPA019, YLPA020
S 862-005
(9) Close these circuit breakers.
(a) P6 Main Power Distribution Panel 1) 6C1 ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 1 2) 6C2 ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 2 3) 6C3 ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 3 4) 6C4 ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 4 5) 6G10 ENG FIRE/OVHT DET ENG 2 LOOP A 6) 6G11 ENG FIRE/OVHT DET ENG 2 LOOP B 7) 6G12 ENG FIRE/OVHT DET ENG 4 LOOP A 8) 6G13 ENG FIRE/OVHT DET ENG 4 LOOP B 9) 6H10 ENG FIRE/OVHT DET ENG 1 LOOP A 10) 6H11 ENG FIRE/OVHT DET ENG 1 LOOP B 11) 6H12 ENG FIRE/OVHT DET ENG 3 LOOP A 12) 6H13 ENG FIRE/OVHT DET ENG 3 LOOP B
S 712-006
(10)
Do the engine fire and overheat detection operational test
(AMM 26-11-00/501).
F.
Reconfigure the Engine Fire Detection System from Kidde to Systron Donner
S 022-025
(1) Remove the control cards for the affected engine (AMM 26-10-01/401).
-
Set # 1 for engine 1: YLPA001, YLPA002, YLPA004, YLPA005
-
Set # 2 for engine 2: YLPA006, YLPA007, YLPA009, YLPA010
-
Set # 3 for engine 3: YLPA011, YLPA012, YLPA014, YLPA015
-
Set # 4 for engine 4: YLPA016, YLPA017, YLPA019, YLPA020
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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