LATCHES EXTERNAL CLOSED STOP STOP FITTING
STOP LEVER
FWD SIDE CARGO DOOR DOUBLER OPEN STOP LATCHES BOLT LATCH TORQUE TUBE
SERRATED PLATE
WEB FRAME HOOK PIN FITTING
SEE A HOOK (2 LOCATIONS) BSEE LATCH MECHANISM DOORFRAME 0.250 DIA SIGHT HOLE A-A
HOLE ALIGNMENT BLIND PIN
REMOVED) AND RETAINER (CAP, SCREW, HOOK PIN 1
A
FITTINGS LATCH STOP EXTERNAL
A A OPEN SWITCH LATCHES
A A
1 2.65 |0.05 INCHES AFT PIN 2.52 |0.05 INCHES FORWARD PIN B LATCH MECHANISM
Latch and Hook Adjustment Figure 405
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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747-400 MAINTENANCE MANUAL
2) Measure the torque. When the torque increases by 15-20
pound-inches, turn the actuator 1/2 turn in the
counterclockwise direction.
NOTE: This is when the internal stops are against each
____
other.
3) Turn the torque wrench five additional turns in the counterclockwise direction.
NOTE: This is the rigged closed position.
____
(b) Adjust the hook pin fittings if it is necessary to get the correct flushness. The dimensions for the zones shown in Fig. 406 are listed in Table I.
NOTE: If you cannot get the correct flushness when you
____ adjust the hook pin fitting, you can adjust the mid-span latch fittings to help get the correct flushness.
~.............................................................................. | TABLE I | | SIDE CARGO DOOR FLUSHNESS AND CLEARANCE TOLERANCES | ................................................................................ | AIRPLANE | | | | | | EFFECTIVITY | | ZONE | FLUSHNESS | CLEARANCE | . .............................................................................. | | | A | 0.04 to 0.14 inch | 0.16 to 0.24 inch | | | | | (1.01 to 3.56) mm | (4.06 to 6.09) mm | ................................................................................ | | | B |-0.08 to 0.14 inch | 0.16 to 0.24 inch | | | | | (-2.03 to 3.56) mm| (4.06 to 6.09) mm | ................................................................................ | | | C |-0.07 to 0.08 inch | 0.16 to 0.24 inch | | | | | (-1.78 to 2.03) mm| (4.06 to 6.09) mm | ................................................................................ | | | D |-0.04 to 0.12 inch | 0.16 to 0.24 inch | | | | | (-1.02 to 3.05) mm| (4.06 to 6.09) mm | ................................................................................ | | | E |-0.01 to 0.12 inch | 0.16 to 0.24 inch | | | | | (-0.25 to 3.05) mm| (4.06 to 6.09) mm |
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747-400
MAINTENANCE MANUAL
~.............................................................................. | TABLE I | | SIDE CARGO DOOR FLUSHNESS AND CLEARANCE TOLERANCES | ................................................................................ | AIRPLANE | | | | | | EFFECTIVITY | | ZONE | FLUSHNESS | CLEARANCE | ................................................................................ | | | F |-0.10 to 0.08 inch | 0.16 to 0.24 inch | | | | | (-2.54 to 2.03) mm| (4.06 to 6.09) mm | 2.....................….......…......…...................….....................1
(c) The dimensions in Table I are used to fair the side cargo door with the aircraft body.
+ DENOTES DOOR OUTSIDE BODY CONTOUR
-DENOTES DOOR RECESSED INSIDE BODY CONTOUR
(d) If the door cannot be faired within the specified limits of the table, the limits may be exceeded by the following amounts:
Up to 20% of door leading edge may be recessed within body contour by up to 0.02 inch more than limit specified.
Up to 20% of door trailing edge may protrude outside body contour by up to 0.02 inch more than limit specified.
(e) Put a 3/16-inch diameter rod through the sight hole in the hook pin and make sure the rod can engage with the blind hole in the hook. If it is necessary, adjust the hook pin fitting on the serrated plates until the rod can engage with the hole in the hook. Make sure the door fair adjustment does not change.
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