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6) Close the core cowl panels while you hold the 0.125 inch
(3.2 mm) thick spacers adjacent to the latch location.
NOTE:____ If the closed latch does not hold the 0.125 inch
(3.2 mm) thick spacer in its position, adjust the
latch tension to keep the spacer.
7) Open the core cowl panels.
8) Measure the thickness of the modeling clay.
9) Remove the laminations until the shims are the same
thickness as the modeling clay at each shim location.
10) Apply the primer to the shims.
11) Install the applicable shims at each latch location.
S 825-009-N00
CAUTION: DO NOT APPLY A FORCE OF MORE THAN 60 POUND (267 N) TO THE LATCH
_______ HANDLE. IF YOU APPLY A LARGER FORCE, YOU CAN CAUSE DAMAGE TO THE LATCH, KEEPER OR CORE COWL PANEL.
(8) With the push-pull scale, make sure the load necessary to close the latches is 40-60 pounds (178-267 Newtons).
CAUTION: DO NOT TURN THE KEEPER EYEBOLT TO ADJUST THE LATCH
_______ TENSION. IF YOU TURN THE KEEPER, YOU CAN CAUSE DAMAGE TO THE LATCH.
(a) If the load necessary to close the latch is not in the limits, adjust the latch with the steps that follow: 1) Open the latch to the 15-degree open position. 2) Install the hex wrench into the adjustment star in the
keeper mounting.
3) Turn the adjustment star with the hex wrench in the direction necessary to get a load on the latch of 40-60 pounds (178-267 Newtons).
NOTE: The keeper mounting shows the direction to turn the
____ adjustment star to increase the load.
(b) Close all latches for the core cowl panel.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
(3.2 mm)
CLEARANCE LOCATION (LATCH IS CLOSED)A-A
Core Cowl Panel Latch Adjustment Figure 502 (Sheet 1)
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FOR THE KEEPER ASSEMBLY
LATCH HANDLE IS 40-60 POUNDS
(178-267 N) APPLIED AS SHOWN.(4 LOCATIONS)
2
|0.03 INCH
(|0.76 mm)
Core Cowl Panel Latch Adjustment
Figure 502 (Sheet 2)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 825-012-N00
(9) Make sure all latch handles are smooth with the contour of the core cowl panel [|0.03 inch (|0.76 mm)].
(a) If the latch handle is not smooth with the contour, adjust the position of the keeper to move the latch handle to the contour with the steps that follow:
NOTE: The keepers are given with the slotted holes to permit
____
the adjustment to the contour.
1) Open the latch for the core cowl panels. 2) Loosen the bolts which attach the keeper to the core cowl panel. 3) Move the keeper in if the latch handle was above the contour. 4) Move the keeper out if the latch handle was below the contour. 5) Tighten the bolts which attach the keeper to the core cowl panel.
S 415-021-N00
(10)
Close all latches for the core cowl panel.
S 825-015-N00
(11)
Make sure all latches are smooth with the contour of the core cowl panel.
(a) If it is necessary, adjust the latch handles.
S 825-016-N00
(12)
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