(3)
Disconnect control rod from ladder hook by removing the attaching bolt, two spacers, washer, and locknut (Fig. 501).
(4)
Disconnect control rod from ladder lock trigger by removing attaching bolt, washer, and locknut.
(5)
Loosen jamnut at each end of control rod.
(6)
Adjust rod end at each end of control rod until a length of 42.88 +0.06/-0.06 inches has been established between center of bolt holes in rod ends.
(7)
Tighten jamnuts at each end of control rod to secure rod ends and install safety wire on each jamnut.
(8)
Connect one end of control rod to ladder lock trigger with bolt, washer and locknut.
(9)
Connect other end of control rod to ladder hook with bolt, two spacers, washer, and locknut.
B. Test Lower Ladder Lock
(1)
Close forward airstair system circuit breakers on circuit breaker panel P6.
(2)
Check that handrail extensions are in stowed position.
(3)
Using exterior control, operate forward airstair toward retracted position. Stop retraction cycle as soon as lower ladder lock trigger has been actuated and ladder hooks have locked lower ladder to upper ladder.
(4)
Check that lower ladder is held firmly against upper ladder with a minimum of movement in lock.
(5)
Operate airstair toward fully retracted position or fully extended position as desired.
5C8
Feb 20/92 52-61-191 Page 501
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Forward Airstair Lower Ladder Lock Adjustment 500
52-61-191 Figure 501 Feb 15/68
Page 502
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
FORWARD AIRSTAIR SLOW-DOWN OPERATING LIMIT SWITCH - REMOVAL/INSTALLATION
EFFECTIVITY
Standard Passenger Airplanes
1. Remove Forward Airstair Slow-Down Operating Switch
A. Extend airstair and gain access to area above drain pan through access hatch and remove drain pan attachment fittings if installed.
WARNING: DO NOT OPERATE THE AIRSTAIR WHEN THESE CONDITIONS OCCUR:
-YOU WILL OPERATE THE AIRSTAIR MORE THAN 3 CYCLES IN 20 MINUTES -THE WIND IS MORE THAN 40 KNOTS -THERE IS NO SUPPORT UNDER THE END OF THE AIRSTAIR WHEN THE
AIRPLANE IS ON JACKS -THE FORWARD ENTRY DOOR IS OPENED FULLY -THE AREA IS NOT CLEAR OF PEOPLE OR EQUIPMENT.
IF YOU OPERATE THE AIRSTAIR WHEN THESE CONDITIONS OCCUR, YOU CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
CAUTION: DO NOT ATTEMPT TO MOVE SWING ARM OUT OF WAY OR USE SWING ARM AS HANDHOLD OR SWING ARM MAY BE DAMAGED.
NOTE: Temporary access can be attained by partially retracting airstairs.
B. Retract airstair and release control before airstair door begins to close. Remove drain pan if installed.
C. Open airstair circuit breakers on panel P6. Disconnect airstair electrical connector (2) (Fig. 401).
D. Disconnect electrical wiring from switch.
E. Remove locknuts and switch.
2. Install Forward Airstair Slow-Down Operating Switch
A. Position switch on mounting bracket with switch roller up.
B. Adjust locknuts on switch so switch roller is lowered from the switch actuating ramp as far as threads permit.
C. Adjust slow-down limit switch (Ref 52-61-201 A/T).
D. Install drain pan, and extend airstair and install drain pan attachment fittings if removed.
5C8
Feb 20/92 52-61-201 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Forward Airstairs Slow-Down Operating Limit Switch Installation 500
52-61-201 Figure 401 Aug 15/68
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
FORWARD AIRSTAIR SLOW-DOWN OPERATING LIMIT SWITCH - ADJUSTMENT/TEST
EFFECTIVITY
Standard Passenger Airplanes
1. Forward Airstair Slow-Down Operating Limit Switch Adjustment
A. Equipment and Materials
(1)
Rigging Pin -0.2480 +0.0005/-0.001 inch diameter by 2.50 inches long
NOTE: Rigging pin is part of F70207-61.
(2)
Voltohmmeter - Simpson Model 260
B. Adjust Forward Airstair Slow-Down Operating Switch
(1) Extend airstair and gain access to area above drain pan through access hatch and remove drain pan attachment fittings if installed.
WARNING: DO NOT OPERATE THE AIRSTAIR WHEN THESE CONDITIONS OCCUR:
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