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75-24-08
ALL ú ú N02 Page 405 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 024-023-N00
(9)
Remove the collector from the engine.
S 034-009-N00
(10)
Install the protection caps to the collector and the openings on the cooling air tubes and shutoff valve.
TASK 75-24-08-404-010-N00
3. Install the Low Pressure Turbine Case Cooling Collector (Fig. 401)
_______________________________________________________
A. Consumable Materials
(1)
D00390 Oil - Engine
B.
References
(1)
AMM 71-11-06/201, Core Cowl Panels
(2)
AMM 75-24-09/401, Low Pressure Turbine Case Cooling Manifolds
(3)
AMM 78-31-00/201, Thrust Reverser Systems
(4)
IPC 36-11-01 Fig. 5
(5)
IPC 75-24-00 Fig. 10
(6)
IPC 75-24-09 Fig. 1
(7)
IPC 75-24-09 Fig. 5
C.
Access
(1)
Location Zone
412 Engine 1 - LPT Case 3 o'clock
422 Engine 2 - LPT Case 3 o'clock
432 Engine 3 - LPT Case 3 o'clock
442 Engine 4 - LPT Case 3 o'clock
(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
D.
Procedure
(1)
Remove the protection caps.
S 424-012-N00
(2)
Put the collector below the LPT case cooling air shutoff valve on the LPT case.
S 644-024-N00
(3)
Lubricate the threads of the bolts, which attach the collector, with engine oil.
S 434-013-N00
(4)
Attach the collector to the support bracket and shutoff valve with bolts (use the longer bolt at the support link location) and nuts (section A-A).
(a)
Tighten the bolts with your hand.
S 434-011-N00
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-24-08
ALL ú ú N01 Page 406 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(5) S 434-014-N00Install the clamps on the forward inboard bracket of the collector.
(6) S 644-025-N00Lubricate the threads of the bolts, which attach the clamps, with engine oil.
(7) S 434-026-N00Attach the clamps to the bracket on the flange N with the bolts. (a) Tighten the bolts with your hand.
(8) S 434-015-N00Install the clamps on the aft collector mount.
(9) S 644-027-N00Lubricate the threads of the bolts, which attach the clamps on the aft collector mount, with engine oil.
S 434-028-N00
(10) Attach the clamps to the brackets on the flange P with the bolts and nuts.
(a) Tighten the bolts with your hand.
S 434-016-N00
(11)
Tighten the bolts which attach the collector to the support bracket and the shutoff valve flange to 85-95 pound-inches (9.6-10.7 newton-meters).
S 434-017-N00
(12)
Tighten the bolts which attach the forward collector mount to the flange N bracket to 36-40 pound-inches (4.1-4.5 newton-meters).
S 434-018-N00
(13)
Tighten the bolts which attach the clamps on the aft collector mount to the flange P brackets to 36-40 pound-inches (4.1-4.5 newton-meters).
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