EMERGENCY EXIT HATCH - ADJUSTMENT/TEST
1. Emergency Exit Hatch Adjustment
A. Equipment and Materials
(1)
Laminated Shims - BACS40B24-34
(2)
Washers - AN960-10L
(3)
Shims - 69-36674-5
(4)
Shims - 63-2541-1
(5)
Shims - 69-36674-7
B. Adjust Hatch Vertically and in a Station-Wise Direction
(1)
Install hatch (Ref Emergency Exit Hatch - R/I).
(2)
Adjust stop pins (4, Fig. 501, Detail B) vertical alignment with frame stop fittings (5) by adding or removing laminated shims (BACS40B24-34) (8, detail C) under the lower pivot fitting (7).
(3)
Adjust the two heel pads (10, detail D) by adding or removing washers (AN960-10L) (11) as required so the heel pads just contact the sill as the hatch closes. With the hatch closed and latched, the pads will be unloaded.
(4)
Check that gap between hatch skin and fuselage skin is 0.12 +0.06 inch at any point when hatch is closed and latched. On a new hatch, where necessary, trim edge of hatch to achieve this condition.
CAUTION: UNDER NO CIRCUMSTANCES SHOULD MATERIAL BE TRIMMED FROM EDGE OF HATCH OPENING.
C. Adjust Hatch Flushness
(1)
Remove emergency exit hatch (Ref Emergency Exit Hatch - Removal/Installation).
(2)
Remove emergency exit hatch lining, if installed (Ref 52-21-12, Emergency Exit Hatch Lining - Removal/Installation).
(3)
Back off all hatch stop pins (4, Fig. 501, Detail B).
(4)
Install hatch and adjust latch fittings (3, detail A) on serrated latch plates (2) attached to hatch opening frames (1), and also lower pivot fitting (7, detail C) on serrated plate (9) attached to lower frame, so that hatch is flush with fuselage.
(5)
With hatch closed and latched, screw stop pins (4) out until pins just contact stop fittings (5) on hatch opening frames. Back off a half turn on stop pins. Then back off an additional amount until first slot in stop pin lines up with first slot in bushing (1/16 turn maximum) and secure with lock spring.
NOTE: The outside surface of the emergency exit hatch must always be inboard from the outside surface of the fuselage. The distance between the outside surface of the hatch and the outside surface of the fuselage should be 0.03 to 0.09 inch. You can make this distance 0.00 to 0.12 inch if it does not occur around more than 5.8 inches of the outside edge of the hatch.
(6)
Adjust vertical position of hatch by adjusting guide block view 1, (Fig. 501) using laminated shim to obtain gap at hatch pivot fitting as shown in section A-A.
(7)
Remove hatch.
(8)
If hatch is new or one that is being adjusted for a new location, install marker at top edge of hatch. Identify hatch location by crossing out, taping over, or painting over three portions of marker on top of hatch to leave correct location callout.
(9)
Install emergency exit hatch lining (Ref 52-21-12 R/I).
527
Sep 20/81 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-21-0 Page 501
D. Adjust Force Required to Close Hatch
(1)
Check that handle load with latch not installed is between 6 and 10 pounds.
(2)
Check that force required to open and close latch without lining installed is between 10 and 20 pounds.
(3)
Install hatch lining and check that force required to open and close is between 10 and 25 pounds.
(4)
Reduce force required to open and close hatch per the following: (Fig. 502).
(a) Loosen fasteners holding sidewall trims and push outboard. Retighten fasteners. Check forces.
570
52-21-0 Page 502 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 20/91
533 Emergency Exit Hatch Adjustment Feb 15/78 Figure 501 (Sheet 1) Page 502A/502B BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
570 Emergency Exit Hatch Adjustment
Feb 15/78 Figure 501 (Sheet 2) 52-21-0
Page 503
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Emergency Exit Hatch Closing Force Adjustment 527
52-21-0 Figure 502 (Sheet 1) Feb 15/72
Page 504
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
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