D.
Prepare to Remove the EEC Fuel Temperature Thermocouple Probe (Fuel Temperature Probe).
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-003-N00
(2)
Make sure the applicable FUEL CONTROL switch is in the CUTOFF position.
(a)
Install the DO-NOT-OPERATE tag.
S 864-002-N00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
SEE B
FUEL FWD
PUMP
MAIN GEARBOX A
3. FUEL TEMPERATURE (REF)
PROBE
SEE C
EEC WIRING
HARNESS
NUT
B
(2 LOCATIONS)
FUEL PUMP FILTER-HOUSING
4.
ADAPTER
5.
PACKING
3. FUEL TEMPERATURE PROBE
NUT (2 LOCATIONS)
C
ENGINES PRE-PW-SB 73-161
EEC Fuel Temperature Thermocouple Probe Installation
Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
6. FUEL TEMPERATURE PROBE
EEC WIRING HARNESS
SEE C
NUT
(2 LOCATIONS)
FUEL PUMP FILTER-HOUSING
B
6. FUEL
NUT TEMPERATURE
(2 LOCATIONS) PROBE
7.
SCREW
8.
BRACKET
13. BOLT
9.
PACKING
10.
BRACKET
C 12. BOLT 11. BUSHING
ENGINES POST-PW-SB 73-161
EEC Fuel Temperature Thermocouple Probe Installation Figure 401 (Sheet 2)
G51382
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 864-004-N00
(3)
Push the STAT button on the select panel of the EICAS display to make sure the status page shows on the auxiliary EICAS.
(a)
Make sure the applicable FUEL SPAR VLV ENG 1, 2, 3, or 4 status message does not show.
___
S 864-005-N00
(4)
For the applicable engine, open these circuit breakers on the main power distribution panel, P6, and install the DO-NOT-CLOSE tags:
(a)
6G1 FUEL SHUTOFF VALVE ENG 1
(b)
6G15 SCU ALT PWR ENG 1
(c)
6G23 ENG SCU 1
(d)
6G2 FUEL SHUTOFF VALVE ENG 2
(e)
6G16 SCU ALT PWR ENG 2
(f)
6G24 ENG SCU 2
(g)
6G3 FUEL SHUTOFF VALVE ENG 3
(h)
6G17 SCU ALT PWR ENG 3
(i)
6G25 ENG SCU 3
(j)
6G4 FUEL SHUTOFF VALVE ENG 4
(k)
6G18 SCU ALT PWR ENG 4
(l)
6G26 ENG SCU 4
S 014-037-N00
(5) Open the right fan cowl panel (AMM 71-11-04/201).
S 044-039-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(6)
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
(7)
Open the right core cowl panel (AMM 71-11-06/201).
S 014-038-N00
S 014-040-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
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