(4)
AMM 78-31-00/201, Thrust Reverser System
(5)
IPC 72-61-02 Fig. 1
D.
Access
(1)
Location Zone
412 Engine 1 - Main Gearbox Aft Face 8 o'clock
422 Engine 2 - Main Gearbox Aft Face 8 o'clock
432 Engine 3 - Main Gearbox Aft Face 8 o'clock
442 Engine 4 - Main Gearbox Aft Face 8 o'clock
(2)
Access Panel
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
E.
Prepare for the Installation
S 224-010-N00
(1)
Do a check of the clearance between the face seal and the deoiler drive housing.
(a)
Make sure that the clearances are in the limits as shown in the table that follow.
~............................................................. | | | NEW PART REFERENCE | CLEARANCE | | | | DIMENSIONS | LIMITS | | PART | | INCHES | INCHES | | NAME | DIA | (MM) | (MM) | | | ............................................... | | | MIN | MAX | MIN | MAX | ............................................................... | SEAL | OD | 3.3570 | 3.3640 | | | | | | (85.268) | (85.445) | 0.0010 | 0.0092 | ......................................... (0.0260) | (0.2340) | | HOUSING | ID | 3.3650 | 3.3662 | | | | | | (85.471) | (85.501) | | | 2.........….....…...........…...........…..........…..........1
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72-61-02
ALL ú ú N01 Page 406 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
F. Install the Deoiler Drive Oil Seal
S 434-011-N00
(1)
Remove the cap from the ejector port.
S 434-012-N00
(2)
Put a new packing, lubricated with engine oil, in the groove of the deoiler seal.
S 644-013-N00
(3)
Lubricate the mating (carbon) surface of the face seal with engine oil.
S 424-014-N00
(4)
Install the deoiler seal into the deoiler ejector port so it will be against the end of the gearshaft.
S 434-015-N00
(5)
Install the retaining ring into the groove in the ejector port to hold the deoiler seal.
S 434-016-N00
(6)
Install the deoiler outlet tube as follows:
(a)
Remove the caps from the deoiler outlet tube.
(b)
Install a new packing, lubricated with engine oil, into the groove at the front of the tube.
(c)
Align the bolt holes while you install the tube to the gearbox and put the two brackets over the flange of the tube. 1) Install three bolts that have threads lubricated with
antigalling compound. 2) Tighten the bolts with your hands.
(d)
Attach the deoiler outlet tube to the Flange M and Flange N brackets with clamps, bolts, threads lubricated with engine oil, and nuts. 1) Tighten the bolts to 36-40 pound-inches
(4.1-4.5 newton-meters).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-61-02
ALL ú ú N01 Page 407 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(e)
Tighten the three bolts that attach the deoiler outlet tube to the gearbox to 62-72 pound-inches (7.0-8.1 newton-meters).
(f)
Tighten the clamp bolt that attaches the tube for the main oil filter to the bracket attached to the front flange of the deoiler outlet tube to 36-40 pound-inches (4.1-4.5 newton-meters).
S 414-026-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU CLOSE THE LEFT
_______ THRUST REVERSER. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(7)
Close the left thrust reverser (AMM 78-31-00/201).
S 414-025-N00
(8)
Close the left core cowl panel (AMM 71-11-06/201).
