(3)  
AMM 78-31-00/201, Thrust Reverser System

 E.
Access

 (1)  
Location Zones
 413 Fan Cowl Panel, Left Engine
 415 Fan Reverser, Left Engine
 423 Fan Cowl Panel,Right Engine
 425 Fan Reverser, Right Engine

 (2)  
Access Panels
 413AL Fan Cowl Panel (Left)
 415AL Fan Reverser (Left)
 423AL Fan Cowl Panel (Left)
 425AL Fan Reverser (Left)

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. PHASE 3 ENGINES POST-SB-75-95 ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
F.  Installation of the No. 3 Bearing Compartment Breather Restrictor Valve (Fig. 401)
 S 424-030-N00
 (1)  Install the No. 3 bearing compartment breather restrictor valve (3) as follows:
 (a)  
Remove the protection covers from the openings.

 (b)  
Apply engine oil to the new packing (5) and to the bolts (1, 4).

 (c)  
Install the new packing (5) to the groove on the elbow of the valve (3).

 (d)  
Install the restrictor valve (3) to the three-hole mount pad on the deoiler. The mount pad is on the front right side of the gear box. 1) Apply engine oil to the bolts (4). 2) Attach the valve (3) with the bolts (4).

 a) Tighten the bolts (4) with your hands.

 (e)  
Install the face seal (7) between the upper three-hole pad on the restrictor valve and the No. 3 bearing breather tube (2). 1) Attach the tube (2) to the valve (3) with the bolts (1).

 a) Lubricate the bolt threads (1) with engine oil. b) Tighten the bolts (1) with your hand.

 (f)  
Lubricate the tube nut (6) of the air supply tube (6) with antigalling compound. 1) Connect the tube (6) to the restrictor valve (3).

 a) Tighten the tube (6) with your hand.

 (g)  
Torque the three bolts (4) that attach the valve (3) to the deoiler to 85-95 pound-inches (9.604-10.734 newton-meters).

 (h)  
Torque the bolts (1) that attach the No. 3 bearing breather tube (2) to the restrictor valve (3) to 85-95 pound-inches (9.604- 10.734 newton-meters).

 (i)  
Torque the tube nut (6) to 200-225 pound-inches (22.597-25.422 newton-meters). 1) Install lockwire or safety cable and safety cable ferrule

 to the tube nut (6).
 G.  Put the Airplane Back to Its Usual Condition
 S 034-031-N00
 (1)  
Make sure the work area is clean.

 (a)  Remove all tools and other items.

 (2)  
Remove the access platform.

 S 094-032-N00
 S 414-033-N00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT COULD OCCUR.
 (3)  Close the left thrust reverser (AMM 78-31-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. PHASE 3 ENGINES POST-SB-75-95 ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(4)  S 414-039-N00Close the left core cowl panel (AMM 71-11-06/201).
 (5)  S 414-040-N00Close the left fan cown panel (AMM 71-11-04/201).
 (6)  S 444-034-N00Do the activation procedure for the thrust reverser (AMM 78-31-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. PHASE 3 ENGINES POST-SB-75-95 ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
LAST CHANCE OIL STRAINER - REMOVAL/INSTALLATION
_______________________________________________
 1.  General_______
 A.  This procedure gives the instructions to remove and install the last chance oil strainer.
　
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