SEE C
SEE E
SEE F
CONTROL CABLE FOR THE TCC AIR VALVE
SEE D
COLLECTOR FOR LPT CASE COOLING
TVC
TURBINE VANE ANDCOLLECTOR FOR
AIR DUCT
FWD BLADE COOLING AIRHPT CASE COOLING
A (TVBCA) VALVE SEE B
TVBCA
VALVE
TVBCA VALVE POSITION SWITCH
1
B
1 ENGINES WITHOUT PHASE 3
Turbine Cooling System (Right Side)
Figure 602 (Sheet 1)
F01125
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
POSITIONINGBOLT HOLE
CONTROL CABLE
FWD
TURBINE CASE COOLING (TCC)
AIR SHUTOFF VALVE ACTUATOR
C
JAMNUT
CONTROL CABLE FOR CLAMP
THE TCC AIR VALVE
ROD END
BEARING
TURNBUCKLE
BOLT
NUT ADJUSTABLE BRACKET
TURNBUCKLE
(2 LOCATIONS)
D
Turbine Cooling System (Right Side) Figure 602 (Sheet 2)
F01136
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
BOLT
BOLT
LPT TCC
AIR SHUTOFF
VALVE
HPT TCC AIR SHUTOFF VALVE
NUT
ADJUSTER
JAMNUT (2 LOCATIONS)
CONTROL CABLE FOR THE TCC AIR VALVE
LEVER ARM
RIG PINRIG PIN LEVER
HOLES
HOLES ARM TCC AIR SHUTOFF VALVES FULLY CLOSED POSITION F
CABLE ROD END
IDLER ARM
NUT
BEARING RETAINING RING
NUT
BUSHING
NUT
ADJUSTER ROD END LA5449(2 LOCATIONS)
RIG PIN HOLES TCC AIR SHUTOFF VALVES ALIGNED FULLY OPEN POSITION
Turbine Cooling System (Right Side)
Figure 602 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITHOUT PHASE 3 ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
F01152
BOLT CABLE ROD END
BOLT IDLER ARM
NUT
BEARING RETAINING RING NUT
BUSHING
SHUTOFF VALVE LPT TCC AIR HPT TCC AIR SHUTOFF VALVE ADJUSTER ROD END (2 LOCATIONS)
NUT JAMNUT (2 LOCATIONS) ADJUSTER NUT
E
RIG PIN HOLES AIR VALVE CABLE CONTROL FOR THE TCC
RIG PIN HOLES LEVER ARMS HOLES ALIGNED RIG PIN
TCC AIR SHUTOFF VALVES TCC AIR SHUTOFF VALVES
FULLY CLOSED POSITION FULLY OPEN POSITION
F
Turbine Cooling System (Right Side)
Figure 602 (Sheet 4)
F01161
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(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 Examine the Turbine Cooling System
S 046-034-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.
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