A. Door light seals that are between the partition and the hinge may be removed by removing the hinge screws freeing seal from the partition structure.
B. Remove bonded seals by pulling the seal and breaking the adhesive bond to the partition structure.
4. Install Light Seal (See figure 401.)
A. Install door light seal in hinge area.
(1)
Position door seal on partition and punch holes in seal flange to correspond with hinge attachment holes.
(2)
Set door in place and attach the seal and hinge to partition structure with the decorative screws.
B. Install door bonded light seal.
(1) Clean partition seal surface. Remove old adhesive with solvent, Series 88 (Ref AMM/SOPM 20-30-88) and a clean cloth prior to bonding a new seal in place.
WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIRMENTS FOR PROPER HANDLING PROCEDURES.
500
May 01/98 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-09-171 Page 401
Door Light Seal Installation 500
52-09-171 Figure 401 Nov 15/67
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(2)
Clean vinyl surfaces. Denatured alcohol may be used instead of aliphatic naphtha. Wipe off solvent before it has evaporated using new cheesecloth.
(3)
Prepare EC-4475 for brushing. Stir thoroughly. Thin EC-4475 with one part of methyl ethyl ketone to one part of adhesive by volume, well blended.
(4)
Apply an even brush coat of EC-4475 to both bonding surfaces. Allow to dry 20 to 30 minutes. Apply a second coat of adhesive to both bonding surfaces and commence the bonding operation immediately.
(5)
Accurately position the vinyl seal at one end or edge of the surface to be bonded. Bond the new seal in place on the partition seal surface so that when the door is closed the seal will be depressed equally along its length.
NOTE: Press the seal carefully in place progressively over the entire bond area. Extreme care must be taken when positioning the vinyl because once the surfaces have touched they should not be moved or separated. Heavy hand pressure or roller pressure may be used to obtain good contact between bonding surfaces. If the adhesive becomes too dry before completion of bonding, it may be reactivated by wetting one surface with cheesecloth or a brush dampened with methyl ethyl ketone.
500
Feb 15/69 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-09-171 Page 403
FORWARD ENTRY DOOR - DESCRIPTION AND OPERATION
1. General
A. The forward entry door is an inward-outward opening plug type door at the forward end of the fuselage, on the left side. (See figure 1.) An upper and a lower hinge assembly support the door on its forward edge in the door opening, and the door may be closed or opened from inside or outside the airplane.
B. The door is opened by manually operating the centrally located handle, which causes an internal mechanism within the door to release roller latches on the door from latch fittings on the door jambs, folds the gates inward, and moves the door to its most inward position. The door is then manually swung through the door opening and stowed in the open position by the engagement of a latch pin in a hole in the upper hinge assembly.
C. The door is guided during the final closing operation by a centering guide attached to the center of the aft edge of the door engaging with a centering track located on the aft frame of the door opening. When the door is in the closed position and the passenger cabin is pressurized, door stops mounted on the forward and aft frames of the door opening are contacted by adjustable door stop pins attached to the forward and aft edges of the door. The door stops transmit the pressurization loads on the door to the fuselage structure surrounding the door, and prevent excessive deflection of the seal attached around the entire edge of the door. A flap is located at both the upper and lower hinges between cutouts in the door reveal and is attached by a hinge to the forward frame of the door opening. The flap provides continuity of contact surface for the seal around the hinge cutouts when the door is in the closed position. Water drains are provided at the upper and lower hinge locations and along the lower edge of the lower gate. A proximity switch, attached to the door and door frame, is in circuit with the door warning system. Refer to 52-71-0. Assist handles are provided to give additional control during the door operating cycle.
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