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 75-24-04
 ALL  ú ú N03 Page 402 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
F01228
LPT TCC AIR SHUTOFF VALVE
LOWER FLANGE5. NUT
5. NUT
9. BOLT (NOT

F01230
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 75-24-04
 ALL  ú ú N02 Page 403 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 824-014-N00
 (4)  
Turn the lower support link into the engine.

 S 034-004-N00

 (5)  
Remove the bolts (6) and nuts (5) which attach the lower flange of the shutoff valve (7) to the lower support bracket.

 S 034-005-N00

 (6)  
Remove the bolts (8 and 10) which attach the top flange of the shutoff valve (7) and the upper support link to the upper support bracket.

 S 034-006-N00

 (7)  
Remove the bolt (1) and nut (2) which attach the rod end of the adjuster assembly (4) to the lever arm.

 (a)  
Remove the bushing (3).

 S 024-007-N00
 (8)  Move the shutoff valve (7) rearward and out from between the top and bottom support brackets.
 TASK 75-24-04-404-008-N00
 3. Install the Low Pressure Turbine Case Cooling Air Shutoff Valve (Fig. 401)
_______________________________________________________________
 A. Consumable Materials
 (1)  
D00390 Oil - Engine

 B.
Parts

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 7 | LPT Case Cooling Air Shutoff | 75-24-04 | 01 | 25 | | | | Valve | | | | 2......…........…...................................…...........….....…........1
 C. References
 (1)  AMM 71-00-00/501, Power Plant
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-24-04
 ALL  ú ú N01 Page 404 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(2)  
AMM 71-11-06/201, Core Cowl Panel

 (3)  
AMM 75.24.00/501, Turbine Cooling System

 D.
Access

 (1)  
Location Zone
 412 Engine 1 . LPT Case 2 o'clock
 422 Engine 2 . LPT Case 2 o'clock
 432 Engine 3 . LPT Case 2 o'clock
 442 Engine 4 . LPT Case 2 o'clock

 (2)  
Access Panel
 418 Right Core Cowl Panel - Engine 1
 428 Right Core Cowl Panel - Engine 2
 438 Right Core Cowl Panel - Engine 3
 448 Right Core Cowl Panel - Engine 4

 E.
Procedure

 S 424-009-N00
 (1)  Put the shutoff valve (7) into the position between the top and
 bottom support brackets.

 (a)  
Make sure the flow arrows point down.

 (b)  
Make sure to align the bolt holes.

 S 644-015-N00
 (2)  
Lubricate the threads of the bolts (8 and 10) with engine oil.

 S 434-010-N00

 (3)  
Attach the top flange of the shutoff valve (7) and the support link
 to the upper support bracket with bolts (8 and 10).

 (a)  
Install the longer bolt (10) at the support link locations.

 (b)  
Tighten the bolts (8 and 10) to 85-95 pound-inches (9.6-10.7 newton-meters).

 S 644-016-N00
 (4)  
Lubricate the threads of the bolts (6 and 9) with engine oil.

 S 434-011-N00

 (5)  
　
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