78-31-01
 ALL  ú ú N01 Page 609 ú Oct 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
C76419
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S 226-059-N00
 (2)  
Do a check of the measurements at the three hinge locations for each thrust reverser half (Fig. 602).

 (a)  If you find the hinges out of tolerance, repair the hinge (SRM 54-30-90).

 E.
Put the Airplane Back to Its Usual Condition

 S 416-046-N00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the thrust reversers (AMM 78-31-00/201).

 S 416-047-N00

 (2)  
Close the core cowl panels (AMM 71-11-06/201).

 S 416-048-N00

 (3)  
Close the fan cowl panels (AMM 71-11-04/201).

 S 446-049-N00

 (4)  
Do the activation procedure for the thrust reversers
 (AMM 78-31-00/201).

 S 446-050-N00

 (5)  
Do the activation procedure for the speed brake control system (AMM 27-62-00/201).

 (6)
Remove the DO-NOT-OPERATE tags from the thrust reverser levers.

 S 866-051-N00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
THRUST REVERSER - REPAIRS
_________________________
 1.  General
_______
 A.  This procedure gives the instructions for the repair of the nonmetallic insulation layer and fire barrier material on the strut firewall and inner areas of the thrust reverser. The procedures are only for small areas. No flight delay is necessary for the cure of RTV106, or for precured repair plug material used in the procedures.
 B.  These procedures include minor and major damage repair. You can do all procedures on the lower 270 degree arc of the fan duct cowl and thrust reverser if it is necessary.
 C.  The repair of the upper 90 degrees arc which includes the strut firewall is in the major damage procedure and in the trowel rework method which may be used for high contour areas and small or detailed parts.
 D.  These are the procedure titles, and the applicable areas for the repair: ~........................................................................ | Procedure Title | Applicable Area | 2......................................….................................1 | Repair of the Scratches, Cuts and | Lower 270° Arc Only Except | | Minor Damage | Lower Bifurcation | .......................................................................... | Repair of the Scratches, Cuts and | Lower 270° Arc Only Except | | Minor Damage down to Base Metal | Lower Bifurcation | .......................................................................... | Repair of Major damage and | All Areas | | Insulation That Is Gone -| | | Molded Patch Method | | .......................................................................... | Trowel Rework Method For Minor | High Contour Areas and | | Damage To The Insulation | Small or Detail Parts | 2......................................….................................1
 TASK 78-31-01-308-036-N00
 2.  Fan Duct Cowl and Thrust Reverser Fire Insulation Repair
________________________________________________________
 A.  Equipment
 (1)  
Shore A Durometer

 (2)  
Brush, Soft Bristle

 B.  
Consumable Materials

 (1)  
Abrasive Paper, Aluminum Oxide,
 180, 240 and 320 grit (AMM 20-30-07/201)

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(2)  
Cheesecloth - New, Clean, Dry, Lint Free, BMS 15-5 (AMM 20-30-07/201)
　
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