(5)
Remove locksprings (10) and all stop pins except at lower forward, lower aft and upper forward fitting locations. Adjust three remaining stop pins to approximately 0.40-inch protrusion. (Detail B).
(6)
Install door in opening and engage door cam fittings (2) with cam rollers (4) (Detail B).
(7)
Lower door until door stop pins (9) are centered on frame stop fittings (7) within 0.10 inch of center of stop fittings (Detail B).
NOTE: Use block between lower door edge beam and lower main sill to maintain the above position.
(8)
Center door fore and aft using laminated shims (6) to obtain 0.03-inch nominal gap between a pair of roller cams (2) and rub plates (1) (Detail A). Gap between door skin and fuselage skin should be 0.20 (+0.05/-0.05) inches.
(9)
Adjust clearance between cam rollers (4) and end of cam fitting slot to 0.10 (+0.05/-0.02) inches by adjusting serrated plate (5) (Detail A and section A-A). Measurement can be made by inserting wire through gage hole in end of cam slot.
(10)
Adjust upper forward and aft door stop pins, and lower forward stop pin to position door until outside of door is flush to within +0.00/-0.12 at the sides and +0.00/-0.15 at top and bottom.
NOTE: You can increase the limits by ± 0.03 inch in one or more locations. The sum of the lengths of the increased limits must not be more than 10 inches.
(11)
Move door cam fittings (2) inboard on their serrations to contact cam rollers (4) and tighten bolts to secure cam in nearest serration.
(12)
Readjust lower forward and aft door stop fittings and upper forward door stop fitting to allow rollers to contact the door cam fitting.
(13)
Use clay to recheck cam roller clearance and gap per step (7). At least three cam rollers must contact the outboard face in the cam fittings. The fourth cam roller may have a maximum clearance with the outboard face of its cam fitting of 0.030 inches. Readjust if necessary.
(14)
Install remaining stop pins with thin coat of MIL-C-16173, Grade 2 corrosion preventive compound on surfaces of mating threads.
(15)
Adjust remaining nine door stop pins until they contact frame stop fittings.
(16)
Back off door stop pins until slot in pins match first available slot in stop fitting's sleeves and install locksprings. Install bolts in cam fittings and tighten.
(17)
Install or remove shims (6) as required to center door on stops per step (6) and provide a nominal 0.03-inch clearance between door cams (2) and rub plates (1) (Detail A). Sum of gaps between upper forward and aft cams or lower forward and aft cams shall not exceed
0.06 inch.
(18)
With door installed, place two index marks between the door and body skin as shown in Fig 502.
(19)
If door has been readjusted or new door installed, adjust seal depressor (12) (Ref 52-14-1, Aft Airstair Door Seal Depressor).
(20)
Remove door and install door seal (11).
(21)
Reposition door in entryway and check alignment of door index marks. Index marks must align within + 0.01 inch. Do not remove index marks.
(a) If index marks do not align, check for seal interference or faulty seal depressor adjustment.
(22)
Adjust aft entry door warning position switch (Ref 52-71-0, Door Warning System).
(23)
Install latch stop and adjust so top of stop is within 0.06 +0.03/-0.00 inch from stop pin.
(24)
Remove door and install door lining as required (Ref 52-14-131, Aft Airstair Door Lining).
(25)
Reinstall door and check that index marks are aligned within 0.01 inch. Misalignment of index stripes indicate a lining obstruction is preventing door from reaching its rigged position.
(26)
Check that upper door lining is adjusted within a maximum of 0.96 inch of door structure (Section C-C).Readjust upper door lining panel as required.
(27)
Remove door from airplane.
500
52-14-0 Page 504 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 20/91
500
May 15/71 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 52-14-0 Page 504A
C. Adjust Airstair
NOTE: The aft airstair folding mechanism should be properly adjusted before proceeding (Ref 52-14-101, Aft Airstair Folding Mechanism).
(1)
With airstair in retracted position, disconnect carriage control pushrods (1) from carriage
(2) (Fig. 502).
(2)
Position upper segment of airstair 4.12 (+0.06/-0.06) inches from centerline of upper forward stop fitting. (See section A-A.)
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