S 445-245

 (31)
 Do the Thrust Reverser Activation for Ground Maintenance task (AMM 78-31-00/201).

 S 735-195

 (32)
 Do the test of the engine fire switch again
 for engine 2.

 NOTE: Use the controls and refer to the indications that agree
____
 with the fire switch for engine 2.

 S 735-196
 (33) Do the test of the engine fire switch again
 for engine 3.

 NOTE: Use the controls and refer to the indications that agree
____
 with the fire switch for engine 3.

 S 735-197
 (34) Do the test of the engine fire switch again
 for engine 4.

 NOTE: Use the controls and refer to the indications that agree
____
 with the fire switch for engine 4.

 G. Test the functions of the APU fire handle
 S 015-211
 (1)  
Do this task: Test the functions on the APU fire handle
 (AMM 26-15-00/501)

 H.
APU Fire Extinguishing Squib Discharge Circuit Test

 S 915-191
 (1)  
Do this task: APU Fire Extinguishing Squib Discharge Circuit Test (AMM 26-22-00/501)

 I.
APU Fire Extinguishing Bottle Pressure Switch Test

 S 915-192
 (1)  Do this task: APU Fire Extinguishing Bottle Pressure Switch Test (AMM 26-22-00/501).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-21-01
 ALL  ú ú 04 Page 514 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 MAINTENANCE MANUAL
SEE A
HYDRAULIC SUPPLY SHUTOFF VALVE
FWD
OPPOSITE SIDE VIEW TO SHOW DETAIL
A
Hydraulic Supply Shutoff Valve Position Indication Figure 503
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-21-01
 ALL  ú ú 04 Page 515 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 J.
K.
L.
M.
N.
A
747-400 MAINTENANCE MANUAL
Engine Fire Extinguishing Squib Discharge Circuit Test
 S 915-193
 (1)  Do this task: Engine Fire Extinguishing Squib Discharge Circuit
 Test (AMM 26-21-00/501)Engine Fire Extinguishing Pressure Switch Test
 S 915-212
 (1)  Do this task: Engine Fire Extinguishing Pressure Switch
 Test (AMM 26-21-00/501)Cargo Compartment Fire Extinguishing System Test - Squib Discharge Circuit
 S 915-194
 (1)  Do this task: Cargo Compartment Fire Extinguishing System Test -
Squib Discharge Circuit (AMM 26-23-00/501).Cargo Compartment Fire Extinguishing System Test - Bottle Pressure Switch
 S 915-195
 (1)  Do this task: Cargo Compartment Fire Extinguishing System Test -
Bottle Pressure Switch (AMM 26-23-00/501).Put the Airplane to Its Usual Condition.
 S 865-205
 WARNING:_______ IF THE FUEL CONT VALVE CIRCUIT BREAKERS ARE CLOSED, FUEL WILL
 FLOW INTO THE ENGINES WHEN THE FUEL CONTROL SWITCHES, ON THE
 ISLE STAND, ARE PUT IN THE RUN POSITION.  AN INTERNAL ENGINE
 FIRE OR HOT START MAY RESULT IN INJURY TO PERSONS OR DAMAGE TO

 EQUIPMENT.
 (1)  
Make sure the fuel control switches are in the CUTOFF position.

 S 865-143

 (2)  
Remove the DO-NOT-CLOSE identifier and close these circuit breakers:

 (a)  P6 Main Power Distribution Panel 1) 6L10, FUEL CONT VALVE ENG 1 2) 6L11, FUEL CONT VALVE ENG 2 3) 6L12, FUEL CONT VALVE ENG 3 4) 6L13, FUEL CONT VALVE ENG 4
 S 865-144
 (3)  Remove the DO-NOT-CLOSE identifier and close these circuit breakers:
 (a)  P6 Main Power Distribution Panel 1) 6F1, IGN 1 ENG 1 2) 6K19, IGN 2 ENG 1 3) 6G19, STBY IGN ENG 1 4) 6F2, IGN 1 ENG 2 5) 6K20, IGN 2 ENG 2 6) 6G20, STBY IGN ENG 2 7) 6F3, IGN 1 ENG 3
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-21-01
　
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