(a)  If force required exceeds 15 pounds, realign carriage mounting plates or test operation of control console per 52-14-11, Adjustment/Test.

(10)
Extend airstair and install doorway lining. (Refer to Chapter 25, Doorway Sidewall Lining.)

(a)  
Retract airstair and check position of lining is as shown in section B-B and C-C of sheet 4, figure 401.

(b)  
Trim or adjust doorway lining and seals as required.

(11)
Check force required to operate interior control handle. Measure force at an approximate 30-degree angle to the upper surface of the control handle.

(a)  
Move handle to the door unlatched position and verify maximum force does not exceed 65 pounds.

(b)  
Move handle to the door latched position and verify maximum force does not exceed 25 pounds.

(c)  
If force required to operate handle is excessive, check doorway lining for proper dimension per sections B-B and C-C and readjust as required.

(12)
Install new door lining marks on upper door lining and doorway with door closed and latched.

NOTE:  Ensure center bolt of each shockmount on carriage is tightened so metal spacer inside shockmount is bottomed out.
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NOTE: Index marks on door exterior surface will be aligned with body marks within +
0.03 inch.
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E.  Install Aft Entry Door (When Door & Airstair do not Require Adjustment)
(1) 
 Extend airstair.

(2)  
Adjust or align premarked mounting plates (5) on each corner of carriage to fit mounting plates on door. (See figure 401.) Instal1 and tighten bolts. Do not preload shockmounts.

NOTE:  Ensure center bolt of each shockmount (6) on carriage is tightened so metal spacer inside shockmount is bottomed out.

(3)  
Retract airstair; 1atch and unlatch door several times and check for binding of door on cams or latch pin. Index marks on door and body should be aligned within + 0.03 inches.

(4)  
Check gap between latch pin and latch stop fitting on door is 0.06 (+0.05/-0.02) inch with door closed and latched.

(5)  
Check force required to operate interior control handle. Measure force at an approximate 30-degree angle to the upper surface of the control handle.

(a)  
Move handle to the door unlatched position and verify maximum force does not exceed 65 pounds.

(b)  
Move handle to the door latched position and verify maximum force does not exceed 25 pounds.

(c)  
If force required to operate handle is excessive, check doorway lining for proper dimension per sections B-B and C-C and readjust as required. 1) If doorway lining dimensions are correct and force is excessive, remove

doorway lining and perform steps 2.D.( 8) through 2.D.(12).
3.  Removal/Installation of Aft Airstair
A.  Equipment and Materials
(1)  Lifting device and sling suitable for supporting airstair.
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B.  Prepare to Remove Aft Airstair
(1)  
Rotate airstair to the fully extended position using emergency extension system.

CAUTION:  DO NOT EXTEND AIRSTAIR WHEN AIRPLANE IS ON JACKS WITHOUT PLACING A SUPPORT UNDER END OF AIRSTAIR. AIRSTAIR SHOULD NOT EXTEND MORE THAN 117 INCHES BELOW ENTRY DOOR OR AIRSTAIR COMPONENTS MAY CONTACT BODY STRUCTURE.

(2)  
Open aft airstair circuit breaker on P6 panel.

(3)  
Remove carry-on baggage compartment on forward side of airstair doorway for access. Refer to Carry-On Baggage Compartment, Chapter 25.

(4)  
Remove doorway sidewall lining if aft entry door is to be adjusted. Refer to Chapter 25, Doorway Sidewall Lining.

(5)  
Remove aft entry door, if required. Refer to paragraph 2, Removal/Installation of Aft Entry Door.

(6)  
Attach lifting device and sling to upper segment of airstair.

NOTE: A 3-inch pipe passed through programming arm shaft may be used for lifting.
C.  Remove Aft Airstair
(1)  
Remove return cam from aft airstair hinge. (See detail A.)

(2)  
Disconnect radius rod at control arm on control console.

(3)  
Disconnect tread light wiring at splices at upper end of airstair at floor level.

(4)  
Remove top step by removing bolts from step support arm located between upper segment hinge arms.
　
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