-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-28-00-912-004  Electrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage
R and in the Wings (this does not include the tanks)-52-10-00-410-001 Closing of the Passenger/Crew Door 52-10-00-720-001 Functional Test of the Suspension of the
 Passenger/Crew Door 52-10-00-860-001 Special Precautions before Work on the Passenger/Crew
 Door 52-11-11-400-001 Installation of the FWD Passenger/Crew Door 52-11-12-220-001 Detailed Visual Inspection of the Door Suspension
 Mechanism
 52-11-14-400-001 Installation of the Door-Damper and

 Emergency-Operation Cylinder
 52-11-12-991-001 Fig. 401
 52-11-12-991-002 Fig. 402
 52-11-12-991-003 Fig. 403
 52-11-12-991-008 Fig. 404

 3. Job Set-up
__________
 Subtask 52-11-12-860-051
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the access platform is in position.

 (2)
 Make sure that the special precautions are obeyed (Ref. TASK 52-10-00-860-001)

 Subtask 52-11-12-220-055
 B. Preparation for Installation
 (1)
 Clean the component interface and/or the adjacent area.

 (2)
 Do an inspection of the component interface and/or the adjacent area.

 (3)
 Make sure that the parts retained from the removed component are clean and in the correct condition. (Ref. TASK 52-11-12-220-001)

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 4. Procedure
_________ Subtask 52-11-12-420-057
 A. Installation of the Buffer and the Door Pushbutton Switch
 (Ref. Fig. 402/TASK 52-11-12-991-002)

 (1)
 Put the buffer (26) in position.

 (2)
 Install the screws (25) and the nuts (27) and tighten them.

 (3)
 Install the pushbutton switch assembly (23) in the support arm (1).

 (4)
 Put the fitting (20) in position.

 (5) Install the washers (22), the screws (21) and tighten them. Subtask 52-11-12-820-051
 B. Adjustment of the Buffer
 (Ref. Fig. 404/TASK 52-11-12-991-008)

 (1)
 Fully open the door against the fuselage.

 (2)
 Make sure that the door stay mechanism locks the door in the open position.

 (3)
 Make sure that clearance R1 between the stop (65) and the fuselage is 1 +0.5 -0.5 mm (0.0393 +0.0196 -0.0196 in.).

 (4)
 If the clearance R1 is not correct do the adjustment below:

 (a)
 Push the button of the door stay mechanism and move the door away from the fuselage.

 (b)
 Remove and discard the cotter pin (57).

 (c)
 Remove the nut (58), the washer (59) and the spherical cup (60).

 (d)
 Remove the bolt (51), the washer (52), the buffer (65) and the spherical cup (64).

 (e)
 Remove the guide bush (63) and the washers (53) and (62).

 (f)
 Remove the guide bush (56) and the washers (55) and (61).

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 Door Buffer
 Figure 404/TASK 52-11-12-991-008- 12 (SHEET 1)
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 Door Buffer
 Figure 404/TASK 52-11-12-991-008- 22 (SHEET 2)
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 (g)
 Adjust the adjustable washers (61) and (62) to get the correct clearance R1.

 (h)
 Install the washers (55) and (61) and the guide bush (56).

 (i)
 Install the washers (53) and (62) and the guide bush (63).

 (j)
 Install the spherical cup (64), the buffer (65), the washer (52) and the bolt (51).

 (k)
 Install the spherical cup (60), the washer (59) and the nut (58).

 (l)
 Fully open the door against the fuselage (door locked) and make sure that the clearance R1 is correct.

 (m)
 If necessary, do another adjustment procedure.

 (n) Tighten the nut (58) and safety with cotter pin (57). Subtask 52-11-12-220-051
 C. Check of the Load of the Door Locking Mechanism
 (1) Make sure that the load needed to unlock the door when open does not exceed 6 daN (13.4885 lbf) (Ref. TASK 52-10-00-720-001).
　
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