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747-400 MAINTENANCE MANUAL
 S 962-027
 (2)  Find the connector shown below, on the fire detector card file, M826 and make the wire change for the engine position being changed. Detector Engine_______________ Connector ________ To Pin
_________ From Pin ______
 Engine 1 DW3201A A4 A3
 DW3207C C15 C13
 Engine 2 DW3202E E10 E9
 DW3208D D10 D9
 Engine 3 DW3203A A4 A3
 DW3209C C15 C13
 Engine 4 DW3204E E10 E9
 DW3210D D10 D9

 S 422-030
 (3)  Install a jumper at pin 19 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 482-031
 (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.
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747-400
MAINTENANCE MANUAL

 ~............................................................. | ENGINE | FROM PIN LOC IN M826 | TO PIN LOC ON AW0305 | | POSITION .................................................. | | CONNECTOR | PIN | CONNECTOR | PIN | ............................................................... | 1 | A001 | 19 | D8515J | 16 | | | A002 | 19 | D8416J | 3 | | | A004 | 19 | D8515J | 18 | | | A005 | 19 | D8416J | 4 | ............................................................... | 2 | A006 | 19 | D8525J | 16 | | | A007 | 19 | D8426J | 3 | | | A009 | 19 | D8525J | 18 | | | A010 | 19 | D8426J | 4 | ............................................................... | 3 | A011 | 19 | D8535J | 16 | | | A012 | 19 | D8436J | 3 | | | A014 | 19 | D8535J | 18 | | | A015 | 19 | D8436J | 4 | ............................................................... | 4 | A016 | 19 | D8545J | 16 | | | A017 | 19 | D8446J | 3 | | | A019 | 19 | D8545J | 18 | | | A020 | 19 | D8446J | 4 | 2............….............…..........…..............…........1
 S 862-032
 (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 082-033
 (6)  
Remove the multimeter.

 (7)  
Remove the jumper from pin 19 of the control card.

 S 422-035

 (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 022-034
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747-400 MAINTENANCE MANUAL
 S 862-036
 (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 712-037
 (10) Do the engine fire and overheat detection operational test (AMM 26-11-00/501).
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