1
2
D
123. BOLT (4 LOCATIONS)
A
129. LOCK 129. LOCK
A
131. GASKET
130. GASKET
115. RIGHT TURBINE BLADE COOLING AIR DUCT
124. BRACKET
SEE G
F
FWD
1
ENGINES PRE-PW-SB 73-164
2
ENGINES POST-PW-SB 73-164
3
ENGINES PRE-PW-SB 72-537 OR POST-PW-SB 72-627
4
ENGINES POST-PW-SB 72-537 OR PRE-PW-SB 72-627
126. BOLT
128. BOLT
(5 LOCATIONS)
127. BOLT FWD
G
129. LOCK DIFFUSER CASE INTERNAL TUBE
0.000 - 0.020 INCHES
(0.000 - 0.508 mm)
A-A (SHOWN INSTALLED)
Right Turbine Blade Cooling Air Duct Installation
Figure 403 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-11-05
ALL ú ú N01 Page 421 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
B. References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 78-31-00/201, Thrust Reverser System
(4)
AMM 80-11-01/401, Starter
C.
Access
(1)
Location Zone 412 Engine 1 - Diffuser and Combustor Case 5 o'clock 422 Engine 2 - Diffuser and Combustor Case 5 o'clock 432 Engine 3 - Diffuser and Combustor Case 5 o'clock 442 Engine 4 - Diffuser and Combustor Case 5 o'clock
(2)
Access Panel
415 and 416 Thrust Reverser Halves - Engine 1
425 and 426 Thrust Reverser Halves - Engine 2
435 and 436 Thrust Reverser Halves - Engine 3
445 and 446 Thrust Reverser Halves - Engine 4
D.
Prepare to Remove the No. 10, 11 or 12 Fuel Injector and Support
S 864-052-N00
(1) Make sure the applicable FUEL CONTROL switch is in the CUTOFF position.
S 864-053-N00
WARNING: MAKE SURE YOU OPEN THE CIRCUIT BREAKERS FOR THE ENGINE IGNITION
_______ BEFORE YOU OPEN THE FUEL CONT VALVE. THE IGNITER PLUGS WILL AUTOMATICALLY FIRE IF YOU ARE OUT OF ZERO DETENT, NACELLE ANTI-ICE IS ON, CON IGNITION SWITCH IS SET TO "ON", OR ENGINE START SWITCH IS PULLED TO "ON". IF THE COMBUSTION CHAMBER HAS FUEL IN IT, AN INTERNAL ENGINE OR A TAILPIPE FIRE CAN OCCUR. THE FIRE CAN CAUSE INJURY TO PERSONS OR DAMAGE TO THE ENGINE.
(2)
For the applicable engine, open these circuit breakers and install the DO-NOT-CLOSE tags:
(a)
P6 Main Power Distribution Panel
1) 6F1 IGN 1 ENG 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-11-05
ALL ú ú N01 Page 422 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
2) 6F2 IGN 1 ENG 2 3) 6F3 IGN 1 ENG 3 4) 6F4 IGN 1 ENG 4 5) 6K19 IGN 2 ENG 1 6) 6K20 IGN 2 ENG 2 7) 6K21 IGN 2 ENG 3 8) 6K22 IGN 2 ENG 4 9) 6G19 STBY IGN ENG 1 10) 6G20 STBY IGN ENG 2 11) 6G21 STBY IGN ENG 3 12) 6G22 STBY IGN ENG 4
S 864-430-N00
(3) For the applicable engine, open this circuit breaker and install the DO-NOT-CLOSE tag: (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 014-378-N00
(4) Open the fan cowl panels (AMM 71-11-04/201).
S 044-380-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 procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
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