28-44-01
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A
747-400 MAINTENANCE MANUAL
 (2)  
Access Panel
 191GL Fuel Drain and Dripstick Access Door

 D.
Procedure

 S 014-002
 (1)  
For the measuring stick (1) in the center wing tank, open the fuel drain and dripstick access door, 191G, on the lower left wing-to-body fairing.

 S 034-003

 (2)  
Apply a light pressure on the head (8) and turn 90 degrees counterclockwise to release the measuring stick (1).

 S 864-022

 (3)  
Lower the measuring stick (1).

 S 034-014

 (4)  
Remove the head (8) from the measuring stick (1).

 S 864-015

 (5)  
Lift the measuring stick (1) to its initial position.

 S 494-023

 (6)  
Put the installation tool in the socket (6).

 S 034-016

 (7)  
Turn the installation tool clockwise to loosen.

 (8)  
Lower the socket (6), found below the mounting base.

 S 024-006

 (9)  
Remove the measuring stick (1) with the guide (2), spring (3), and retainer (4).

 S 864-017
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747-400 MAINTENANCE MANUAL
 S 034-018
 (10) Discard the gasket (5) and seal (7).
 TASK 28-44-01-404-007
 3. Measuring Stick Installation (Fig. 401)
____________________________
 A. Equipment
 (1)  
727793T - Installation Tool, Kaiser Electroprecision, 17000 S. Red Hill Ave., Irvine, CA

 B.
Parts

 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Stick - Calibrated (Measuring | 28-44-01 | 01 | 120 | | | | Stick) | | | | | | 1 | Stick - Calibrated (Measuring | | | 125 | | | | Stick) | | | | | | 1 | Stick - Calibrated (Measuring | | | 130 | | | | Stick) | | | | | | 2 | Guide | | | 110 | | | 3 | Spring | | | 105 | | | 4 | Retainer | | | 100 | | | 5 | Gasket | | | 95 | | | 7 | Seal | | | 85 | | | 8 | Head | | | 80 | 2......…........…...................................…..........….....….........1
 C. Access
 (1)  Location Zones 131 Center Section Wing Box, Left 541 Inbd Main Tank (Part), Front Spar to Mid Spar, Left 542 Inbd Main Tank (Part), Front Spar to Mid Spar, Left 543 Outbd Main Tank (Part), Front Spar to Mid Spar, Left 544 Inbd Main Tank (Part), Mid Spar to Rear Spar, Left 545 Inbd Main Tank (Part), Mid Spar to Rear Spar, Left 546 Outbd Main Tank (Part), Mid Spar to Rear Spar, Left 551 Outbd Main Tank (Part), Front Spar to Mid Spar, Left 552 Outbd Main Tank (Part), Mid Spar to Rear Spar, Left 553 Reserve Tank, Front Spar to Rear Spar, Left 641 Inbd Main Tank (Part), Front Spar to Mid Spar, Right 642 Inbd Main Tank (Part), Front Spar to Mid Spar, Right 643 Outbd Main Tank (Part), Front Spar to Mid Spar, Right 644 Inbd Main Tank (Part), Mid Spar to Rear Spar, Right 645 Inbd Main Tank (Part), Mid Spar to Rear Spar, Right 646 Outbd Main Tank (Part), Mid Spar to Rear Spar, Right 651 Outbd Main Tank (Part), Front Spar to Mid Spar, Right 652 Outbd Main Tank (Part), Mid Spar to Rear Spar, Right
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-44-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

FUEL DRAIN AND DRIPSTICK
ACCESS DOOR 191GL

Center Wing Tank Measuring Stick Access Panel
Figure 401

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