H83797 H26736
Stabilizer to Body Front Spar Sliding Seal Installation 500
53-31-31 Figure 401 (Sheet 1) Feb 15/72
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Stabilizer to Body Front Spar Sliding Seal Installation
Feb 15/72 Figure 401 (Sheet 2) 53-31-31
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
B Clean tracks and immediate area to remove debris.
C. Temporarily pin the link assembly to pedestal. Do not install the cotter pins (Fig. 401).
D. Wrap protective Mylar tape around end of track strip as shown in detail A, sheet 2, Fig. 401 to protect seal plate from damage during installation.
E. Insert seal plate into tracks. Plate must be bent in reverse direction during installation to clear stabilizer (detail B).
F. Position seal plate on link assembly using index mark per step A and lightly clamp seal plate to tie bar.
G. Move seal plate fore or aft as required to obtain equal dimensions between etched line on seal plate and edges of track strip along full length of exposed track (sheet 1).
H. Tape all track openings to prevent drilling chips from entering track.
CAUTION: IF CHIPS ENTER TRACKS, TEFLON SEAL MAY BECOME DAMAGED.
I. Tighten clamps. Back drill a minimum of two holes through holes in tie bar into seal plate. Install temporary Cleco fasteners in holes.
J. Remove pins securing link assembly to pedestal.
K. Remove seal plate with attached link assembly.
L. Bench assemble (rivet) seal plate, link assembly, and corner plates using existing holes in tie bar for drilling locations.
M. Insert seal assembly into tracks per step E.
CAUTION: ASSURE THAT MYLAR TAPE OF STEP D IS STILL IN PLACE, PRIOR TO INSERTION.
N. Slide seal up and down. Force to move seal should not exceed 20 pounds and the seal should move freely.
O. Attach link assembly to pedestal with pins and markers. Install cotter pins.
P. Install rub guide. Adjust and trim ends of rub guide as required to maintain 0.03 +0.01 inch clearance between each end of rub guide and track.
501
53-31-31 Page 404 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Nov 15/73
Q. On upper seal only, manually position leading edge of stabilizer full up. Check for clearance between uppermost rivet at corner plates and body structure. If rivet interferes, shave driven head to clear.
Restore Airplane to Normal
A. Remove all protective tapes and covers. Clean up area.
B. Install center track strips. (See figure 401.)
C. Install upper and lower gap panels on stabilizer where applicable. Refer to 12-31-81, Stabilizer Access Panel - Removal/Installation.
501
Nov 15/72 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 53-31-31 Page 405
STRUCTURE ATTACHMENT FITTINGS – DESCRIPTION AND OPERATION
1. General
A. This section describes the fittings on the fuselage used for the attachment of landing gear and doors.
2. Landing Gear Attachment Fittings
A. The nose landing gear attachment fittings are incorporated in the nose landing gear wheel well structure.
B. The main landing gear attachment fittings included in the fuselage structure consist of the fittings to which the landing gear side struts and support beams are attached. The upper member of the landing gear side struts connect to the fuselage at body stations 685 and 695. Each landing gear support beam is connected to the fuselage by means of a swinging link fittings. The lower end of this link is connected to the landing gear support beam and its upper end is connected to two fuselage fittings, one at station 695 and the other at station 706. See figure 1.
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