(2)
AMM 70-23-00/201, Tightening Techniques and Torque Values
(3)
AMM 70-24-05/201, Electrical Harnesses
(4)
AMM 71-00-00/501, Power Plant
(5)
AMM 71-11-04/201, Fan Cowl Panels
(6)
AMM 71-11-06/201, Core Cowl Panels
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
79-21-09
ALL ú ú N03 Page 413 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(7)
AMM 72-34-03/401, Fan Exit Liner Segment
(8)
AMM 78-31-00/201, Thrust Reverser System
E.
Access
(1)
Location Zone
412 Engine 1 - Intermediate Case 8 o'clock
422 Engine 2 - Intermediate Case 8 o'clock
432 Engine 3 - Intermediate Case 8 o'clock
442 Engine 4 - Intermediate Case 8 o'clock
(2)
Access Panels
415 Left Thrust Reverser Half - Engine 1
425 Left Thrust Reverser Half - Engine 2
435 Left Thrust Reverser Half - Engine 3
445 Left Thrust Reverser Half - Engine 4
F.
Procedure
S 024-088-N00
(1)
Remove the protection caps.
S 434-025-N00
(2)
If it is necessary to install a new heat exchanger (1), do the steps that follow:
(a)
Lubricate the threads of the (short) bolts (17) with engine oil.
(b)
Attach the higher (29) and lower (21) mounting brackets to the heat exchanger (1) with the (short) bolts (17). 1) Tighten the bolts (17) to 85-95 pound-inches (9.6-10.7
newton-meters).
S 434-026-N00
(3)
If it is necessary to install a new valve (18), do the steps that
follow:
(a)
Lubricate the packings (33, 35) with the petrolatum.
(b)
Install the packings (33, 35) to the adapters (34, 36) for the servo fuel drain, return, and supply tube.
(c)
Lubricate the threads of the adapters (34, 36) with engine oil.
(d)
Install the adapters (34, 36) to the valve (18).
(e)
Tighten the adapter (34) to 65-75 pound-inches (7.3-8.5 newton-meters).
(f)
Tighten the adapters (36) to 110-120 pound-inches (12.4-13.6 newton-meters).
(g)
Install the drain tube (40) with the steps that follow:
1) ENGINES PRE-PW-SB 79-49;
Do the steps that follow:
a) Lubricate the threads of the smaller adapter (34) with
the antigalling compound.
b) Attach the drain tube (40) to the adapter (34) and to the hole in the tube flange on the air/oil heat exchanger (1).
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