500 Entry Door Operation from Outside Airplane
Apr 15/66 Figure 3 52-11-0
Page 11
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
FORWARD ENTRY DOOR - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Corrosion Preventive Compound . MIL-C-16173, Grade 2 (Ref 20-30-21)
B. Primer . BMS 10-11, Type 1 (Ref 20-30-41)
C. Safety Barrier, Entry and Galley Doors . 4PRE50-7945, (or Warning Strap)
D. Organic Corrosion Inhibiting Compound . BMS 3-27 (Ref 20-30-21)
E. Grease MIL-G-23827 (Ref 20-30-21)
2. Remove Forward Entry Door
A. Remove door lining and insulation panels (Ref 52-11-31 R/I).
B. Remove assist spring and torque tube from forward edge of door frame (Ref 52-11-41 R/I).
C. At lower hinge, disconnect snubber (24, Detail B, Fig. 401) from door by removing four bolts securing attach fitting (25) to hinge support (26). Remove snubber and radius link (21) as a unit from forward edge of door frame.
D. At upper hinge, loosen clamp bolt (7, Detail A) on upper hinge arm (2) and withdraw upper spigot (10) together with thrust washer (8), compression spring (11), retainer washer (12) and O-ring (13).
NOTE: For reference on installation, mark upper spigot and upper hinge arm to index relative position of these parts.
E. Disconnect guide arm (14) from door by removing four bolts securing attach fitting (16) to hinge support (17). Carefully slide roller end of guide arm out from between roller guide plates (5) and remove guide arm from forward edge of door frame.
F. Swing upper and lower hinge arms away from forward edge of door frame and remove entry door.
NOTE: Weight of forward entry door is approximately 180 pounds.
G. If new door is not to be installed immediately, install cargo door personnel safety barrier or warning strap across door opening.
WARNING: DO NOT USE THE WARNING STRAP TO SUPPORT THE WEIGHT OF A PERSON. THE WARNING STRAP INSTALLED ACROSS THE DOOR IS ONLY A VISUAL INDICATION THAT THE DOOR IS OPEN AND WILL NOT SUPPORT A PERSON. IF YOU USE THE STRAP TO SUPPORT YOUR WEIGHT, YOU CAN FALL THROUGH THE DOOR AND CAUSE INJURY.
500
Apr 01/97 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-11-0 Page 401
Forward Entry Door Installation 500
52-11-0 Figure 401 (Sheet 1) Jun 20/84
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
580 Forward Entry Door Installation
Feb 01/95 Figure 401 (Sheet 2) 52-11-0
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Forward Entry Door Installation 538
52-11-0 Figure 401 (Sheet 3) May 01/99
Page 404
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
3. Prepare for Installation
A. Check that dimension between guide plates at upper hinge is as specified in Section A-A, Fig. 401. Adjust shims underneath guide plate as necessary to achieve this dimension.
NOTE: It is necessary to maintain this dimension to ensure door latchpin engagement.
B. If a new door is to be installed, remove the following parts from the old door for reinstallation on the new door.
(1)
Remove upper and lower hinge arm covers by removing attachment bolts.
NOTE: Collect and tag shims.
(2)
Remove stop pins and locksprings from forward and aft edge of door.
(3)
Remove the seal from door (Ref 52-09-131, Bulb-Type Mechanical Seals).
(4)
Apply organic corrosion inhibiting compound to door hinge areas, under scuff plates, and lower 3 to 4 inches of door interior per instructions in 51-21-91.
(5)
Remove door safety barrier or warning strap, if installed.
4. Install Forward Entry Door
A. Support door in position at door opening at approximately 60 degrees from the "door stowed" open position, with the hinge arms positioned properly at the forward edge of doorframe.
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