(2)
AMM 51-21-04/701, Alodine Surfaces
(3)
AMM 52-36-02/401, Bulk Cago Door Balance Mechanism
(4)
AMM 52-71-00/510, Door Warning System
(5)
SSM 52-71-01
(6)
WDM 52-71-14
F.
Access
(1)
Location Zone
146 Bulk Cargo Compartment, RH
(2)
Access Panel
823R Door - Bulk Cargo Compartment
G.
Procedure
S 494-010
(1)
Attach the door sling and the fishpole hoist to the door.
S 414-036
(2)
Put the door in its position in the door opening.
S 214-028
(3)
Make sure the door stop pin centers touch the frame stop pad centers in a 0.30-inch diameter circle (Fig. 401, View A-A).
S 824-039
(4)
If you will install a new door, trim the door outer skin to get the correct clearance between the door and body skin.
S 824-040
(5)
The clearance and flushness tolerances for the zones shown in
Fig. 403 are listed in Table I. ~.............................................................................. | TABLE I | | BULK CARGO DOOR CLEARANCE AND FLUSHNESS TOLERANCES | ................................................................................ | AIRPLANE | | | | | EFFECTIVITY | ZONE | CLEARANCE | FLUSHNESS |
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~.............................................................................. | TABLE I | | BULK CARGO DOOR CLEARANCE AND FLUSHNESS TOLERANCES | ................................................................................ | AIRPLANE | | | | | EFFECTIVITY | ZONE | CLEARANCE | FLUSHNESS | ................................................................................ | ALL | A | 0.10 to 0.18 inch | -0.03 to 0.06 inch | | | | (2.54 to 4.57) mm | (-0.76 to 1.52) mm | ................................................................................ | EXCEPT | A | | -0.04 to -0.10 inch | | GEF 003 | | | (-1.01 to -2.54) mm| ................................................................................ | ALL | B | 0.10 to 0.22 inch | -0.09 to 0.03 inch | | | | (2.54 to 5.58) mm | (-2.28 to 0.76) mm | ................................................................................ | ALL | C | | -0.03 to -0.12 inch | | | | | (-0.76 to -3.04) mm| ................................................................................ | EXCEPT | C | | -0.05 to -0.08 inch | | GEF 003 | | | (-1.27 to -2.03) mm| ................................................................................ | ALL | D | | -0.13 to 0.00 inch | | | | | (-3.30 to 0.00) mm | 2.............................…......…...................….....................1
(6) S 374-012If the new bulk cargo door was trimmed, apply clear Alodine to the trimmed edges (AMM 51-21-04/701).
(7) S 864-029Put the door in the correct position.
(8) S 214-030Make sure the clearances between the door and the fuselage contour are correct.
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747-400
MAINTENANCE MANUAL
FWD
CLEARANCE TOLERANCES
Bulk Cargo Door Flushness and Gap Tolerances
Figure 403 (Sheet 1)
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L40523
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MAINTENANCE MANUAL
FWD
UNPRESSURIZED FLUSHNESS TOLERANCES
A POSITIVE TOLERANCE SHOWS THE DOOR IS OUTBOARD OF THE FUSELAGE CONTOUR. A NEGATIVE TOLERANCE SHOWS THE DOOR IS INBOARD OF THE FUSELAGE.
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