(a)
Attach a 60-pound weight to inside door frame at approximate midpoint of lower half of door to simulate the escape slide weight.
(b)
Reinstall door interior handle temporarily and check that door opening torque applied to operate handle during the first 90 degrees of handle rotation does not exceed 270 pound-inches. The torque applied on handle for the remaining portion of opening cycle must not exceed 450 pound-inches.
(c)
Close door and check that torque applied to handle during closing cycle does not exceed 450 pound-inches.
(d)
If limits are not exceeded, reinstall and adjust door interior trim to satisfy requirements in step (2). If limits are exceeded, adjust door per paragraph 2.
(4)
Check door warning system for correct operation when door is opened and closed. Refer to 52-71-0, Door Warning System - Adjustment/Test.
500
May 15/73 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-41-0 Page 511
GALLEY SERVICE DOOR - INSPECTION/CHECK
1. General
A. This examination will ensure structural integrity and proper operation of the galley service doors by looking for cracks, corrosion and excessive wear in door mechanisms and structures.
B. This examination also is intended to assure proper alignment of the forward galley service doorway lower stop pads to prevent the door lower gate stops overriding the pads and wedging the door in closed position.
2. Galley Service Door Inspection (Fig. 601)
NOTE: Do steps A. and B. for forward door only. Do steps C. thru J. for both forward and aft doors.
A. Examine the stop pads on forward galley service doorway lower threshold and replace the stop pads, if any of following is found:
(1)
In the fore and aft direction, the stop should center on the pad.
(2)
In the inboard and outboard direction, the outboard edge of the stop pad should not protrude over inboard radius or be lower than 0.375 inch to the center line of the stop contact point.
(3)
Chamfers on the upper edge of the pad should be on the forward and aft edge only. Chamfers should not exceed 45° x 0.03 +0.01 inch wide.
B. Examine the stop fitting cutouts in the aft frame of the forward galley service door for cracks.
C. Examine external and internal skins for cracks and corrosion; hinge fairings for looseness and missing screws.
D. Examine frames, internal brackets, handle mechanism housing, and hinges for cracks, corrosion, and loose bolts.
E. Examine door operating mechanism for cracks, corrosion, excessive wear, and loose bolts.
F. Examine latch rollers, latches, and door stops for cracks, corrosion, and foreign particles lodged in latches or attached to stops.
G. Examine drain holes for obstruction.
H. Examine door seals for cracks, cuts and tears, and correct seating when door is in closed position.
I. Examine roller cam plates and guide arm roller for excessive wear, which may cause door to malfunction (Ref 52-41-31 R/I).
J. Check that snubber operates correctly to retard or snub rapid motion of door towards stowed and cocked position.
3. Forward Galley Service Door Lower Gate Hinge Inspection (Fig. 602)
A. Measure the thickness of the hinge.
NOTE: If the hinge thickness is 0.080 inch or 0.100 inch, no further inspection is required. If the hinge is 0.050 inch thick, continue the inspection.
B. Carefully push against hinge with a tool.
NOTE: Free movement of the hinge can indicate a large crack. If a crack is found, stop the inspection and replace hinge per Service Bulletin 737-52A1124.
C. Remove sealant and clean the area as needed to expose the lower gate hinge.
D. If accessible, drive out the spring pins. If the pins are not accessible, drill through each spring pin by inserting a correctly sized drill bit into the open end of the hinge.
E. Drive the hinge pin until one end of the hinge pin can be firmly clamped with locking pliers. Then pull the hinge pin out by carefully striking the locking pliers with a hammer. Penetrating oil should be used to aid in the removal of the hinge pin.
501
May 01/98 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-41-0 Page 601
Forward Service Door Inspection/Check 500
52-41-0 Figure 601 (Sheet 1) May 20/82
Page 602
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Forward Galley Service Door Inspection/Check
May 20/82 Figure 601 (Sheet 2) 52-41-0
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