1. RIGHT EGT (TT4.95) THERMOCOUPLE FWD
6. BOLT
CABLE
18. PLATE
CLAMP
BRACKET
1. RIGHT EGT (TT4.95) THERMOCOUPLE CABLE 6. BOLT FLANGE T
7. NUTFLANGE T EPR (PT4.95)
19. BRACKET MANIFOLD 7. NUT (REF)
5 LOCATIONS
5 O'CLOCK POSITION I
J
Exhaust Gas Temperature (TT4.95) Thermocouple Cable Installation Figure 401 (Sheet 3)
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EPR (PT4.95) MANIFOLD 7. NUT
EPR (PT4.95) MANIFOLD
6. BOLT 7. NUT
FLANGE T BRACKET
CLAMP
CLAMP
2. LEFT EGT (TT4.95)
LEFT EGT (TT4.95)
THERMOCOUPLE THERMOCOUPLECABLE CLAMP CABLE
K
6. BOLT
(5 LOCATIONS)
20. EEC
GROUND LEAD L
EGT (TT4.95)
THERMOCOUPLE
21. NUT-ALUMEL STUDCABLE (2 LOCATIONS)
22. NUT-CHROMEL STUD (2 LOCATIONS)
23. SCREW (2 LOCATIONS)
GROUND TERMINAL
24. COVER
FLANGE P
BRACKET
23. SCREW (2 LOCATIONS)
25. SCREW (2 LOCATIONS)
26. OUTER CLAMP HALF
1. RIGHT EGT (TT4.95) THERMOCOUPLE CABLE
EGT (TT4.95)
2. LEFT EGT (TT4.95)
THERMOCOUPLE
THERMOCOUPLE
CABLE TERMINAL CABLE
BOX
27. INNER
6 O'CLOCK POSITION
CLAMP L-A3849
M
Exhaust Gas Temperature (TT4.95) Thermocouple Cable Installation
Figure 401 (Sheet 4)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(2) Access Panel
417 and 418 Core Cowl Panels - Engine 1
427 and 428 Core Cowl Panels - Engine 2
437 and 438 Core Cowl Panels - Engine 3
447 and 448 Core Cowl Panels - Engine 4
C. Prepare to Remove the Thermocouple Cables.
S 044-060-N00
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE AUTOMATIC SPEED BRAKE
_______ CONTROL SYSTEM. IF YOU DO NOT DO THIS, THE AUTOMATIC SPEED BRAKES CAN MOVE QUICKLY WHEN YOU MOVE THE THRUST LEVERS. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do this task: Automatic Speed Brake System Deactivation
(AMM 27-62-00/201).
S 864-061-N00
(2)
Make sure the forward thrust levers are in the idle position and attach the DO-NOT-OPERATE tags.
S 864-062-N00
(3)
Make sure the reverse thrust levers are in the fully stowed position and attach the DO-NOT-OPERATE tags.
S 864-083-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)
6G15 SCU ALT PWR ENG 1
(b)
6G23 ENG SCU 1
(c)
6G16 SCU ALT PWR ENG 2
(d)
6G24 ENG SCU 2
(e)
6G17 SCU ALT PWR ENG 3
(f)
6G25 ENG SCU 3
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(g)
6G18 SCU ALT PWR ENG 4
(h)
6G26 ENG SCU 4
S 044-063-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.
(5)
Do this task: Thrust Reverser Deactivation for Ground Maintenance
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