(6)
Perform additional rigging check as follows. Handrails and aft entry door may be installed for this check.
(a)
Support airstair per par. 2.D.(l). Airstair should be near ground to meet dimension
0.06 to 1.0 inch per par. 2.D.(2).
(b)
Verify that forward and aft cams (2, Fig. 501) are only snug against stair up side of forward and aft cam follower rollers (3)Lift on upper handrails to check cam roller fit.
(c)
Per adjustment of par. 2.D.(7), check that forward and aft pushrods (4) have been shortened just enough to hold forward and aft cams (2) snug against cam follower rollers (3). There should not be any significant preload in rods.
500
52-14-101 Page 504 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 1/75
500 Aft Airstair Folding Mechanism Test
Jun 20/84 Figure 502 52-14-101
Page 505
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
NOTE: Rotation of male course thread on adjustment nut into female course thread will shorten rod assembly.
(7)
Install handrails (Ref Aft Airstairs Handrails - Removal/Installation).
(8)
Install aft entry door (Ref Aft Entry Door and Airstair - Removal/Installation).
500
52-14-101 Page 506 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 1/75
AFT AIRSTAIR HYDRAULIC DAMPER - REMOVAL/INSTALLATION
EFFECTIVITY
Airplanes With Aft Airstair
1. Remove Damper
A. Extend airstair and open aft airstair circuit breaker on P6 panel.
B. Remove coverplate (Fig. 401).
C. Remove cotter pin, nut, washer, and bolt connecting damper crank and upper segment link.
D. Remove four mounting nuts, washers and bolts from damper.
E. Pull out on damper to release from crank spline.
2. Install Damper
A. Hold damper in position against end of crank assembly spline. Rotate damper crank until splines mate and push damper into position (Fig. 401).
NOTE: One tooth is missing on damper spline and one groove is missing on crank assembly spline.
B. Rotate assembly to align mounting holes and insert four mounting bolts, washers and nuts.
C. Tighten mounting nuts.
D. Connect damper crank to upper segment link with bolt, washer and nut.
E. Insert cotter pin.
F. Test aft entry door and airstair (Ref 52-14-0, Adjustment/Test).
Feb 15/79 52-14-111 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Airstair Hydraulic Damper Installation 500
52-14-111 Figure 401 Feb 15/68
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
AFT ENTRY DOOR AND AIRSTAIR EXTERIOR CONTROL - REMOVAL/INSTALLATION
EFFECTIVITY
Airplanes With Aft Airstair
1. Prepare for Exterior Control Removal
A. Extend airstair.
B. Open aft airstair circuit breaker on P6 panel.
C. Remove aft airstair control console shroud.
D. To gain access to under floor portion of control, enter lower cargo compartment and remove access panels at aft end.
2. Equipment and Materials
A. Pressure sealant
3. Remove Exterior Control
A. Remove bolt connecting exterior control telescopic unit to crank in control console (Fig. 401).
B. Remove bolts attaching control to structure at lower side of console.
C. Remove clamp securing control cable to structure, if provided.
D. Remove bolts and spacer attaching control cable to exterior handle housing. Retain radius filler on lower bolt for reinstallation.
E. Remove bolts from exterior handle pivot pin retainer and remove pivot pin (Section B-B).
F. Move handle aft in housing and force cable out of housing until bolt can be removed from terminal end of control cable.
CAUTION: DO NOT FORCE CABLE MORE THAN NECESSARY TO REMOVE BOLT OR CABLE HOUSING MAY BE DAMAGED.
G. Slide control unit up through access hole in control console until lower end of control clears housing.
H. Move control unit down through control console and remove unit through lower cargo compartment.
Feb 15/79 52-14-121 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Entry Door and Airstair Exterior Control Installation 500
52-14-121 Figure 401 (Sheet 1) Feb 15/68
Page 402
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