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E.  Return the Aircraft to Its Usual Condition
 S 414-033-N00 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the right thrust reverser half (AMM 78-31-00/201).
 S 414-032-N00

 (2)  
Close the right core cowl panel (AMM 71-11-06/201).
 S 414-031-N00

 (3)  
Close the right fan cowl panel (AMM 71-11-04/201).
 S 444-030-N00

 (4)  
Do the activation procedure for the thrust reversers
 (AMM 78-31-00/201).

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HIGH PRESSURE TURBINE CASE COOLING MANIFOLDS - REMOVAL/INSTALLATION
___________________________________________________________________
 1.  General
_______
 A.  This procedure gives the instructions for the removal and installation of the upper and lower cooling manifolds (air tubes) for the high pressure turbine (HPT) case. The different steps in the removal and installation instructions between the eight cooling air tubes are written in the procedure.
 B.  The cooling air tubes are installed on the HPT case and are connected to the HPT TCC collector.
 C.  You can get access to the cooling air tubes through the left and right core cowl panels.
 TASK 75-24-07-004-001-N00
 2.  Remove the High Pressure Turbine Case Cooling Manifolds (Fig. 401)
_______________________________________________________
 A.  References
 (1)
AMM 26-11-02/401, Engine Fire and Overheat Detector Element

 (2)
AMM 71-11-06/201, Core Cowl Panels

 (3)
AMM 75-24-02/401, Turbine Vane Cooling Air Duct

 (4)
AMM 78-31-00/201, Thrust Reverser System

 (5)
IPC 71-00-50 Fig. 1

 (6)
IPC 72-50-52 Fig. 1

 (7)
IPC 72-50-53 Fig. 1

 (8)
IPC 73-21-07 Fig. 5

 (9)
IPC 75-20-01 Fig. 1

 (10)
 IPC 75-24-00 Fig. 5

 (11)
 IPC 79-22-00 Fig. 15

 (12)
 IPC 79-23-00 Fig. 15

 (13)
 IPC 79-23-00 Fig. 20

 B.  
Access

 (1)  
Location Zone
 412 Engine 1 - HPT Case
 422 Engine 2 - HPT Case
 432 Engine 3 - HPT Case
 442 Engine 4 - HPT Case

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE B
SEE A
SEE D LPT NO. 7 (TCC) MANIFOLD 1
NO. 4 BEARING
CLAMP, BOLT, OIL PRESSURE
SPACER, AND TUBE (REF)ENGINE FIRE UPPER HPT
NUT
DETECTOR CASE
ELEMENT COOLING
AND SUPPORT AIR TUBES
TUBE
SEE C
TUBE NUT
NO. 4 BEARING
OIL SCAVENGE TUBE CLAMP, BOLT, AND NUT
CLAMPS, BOLT,
AND NUT EEC PT4.95 PRESSURE TUBE
CLAMPS, BOLT, AND NUT
TUBE NUT
SEE E CLAMPS, BOLT, AND TUBE NUT
NUT
FWD CLAMP, BOLT,NO. 3 BEARING AND NUTOIL VENT TUBE
1
LPT NO. 7 (TCC) MANIFOLD
A
1 ENGINES WITHOUT PW SB 75-53
High Pressure Turbine Case Cooling Manifolds Installation Figure 401 (Sheet 1)
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