(2)
Make sure that the access platform is in position below the partly opened door.
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(3) Make sure that the special precaution on the door damper and emergency operation cylinder is completed (Ref. TASK 52-22-00-860-003).
Subtask 52-22-21-865-059
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU EIS/SLIDES/ARM AND WARN/FLT 15WN P11 121VU EIS/SLIDES/ARM AND WARN/GND 13WN P10 121VU EIS/SDAC1 AND 2/DOOR/DET/PAX 48WV P05
Subtask 52-22-21-010-056
C. Get Access
(1)
Remove the door linings from the door as required (Ref. TASK 25-23-47-000-012) or (Ref. TASK 25-23-47-000-013).
(2)
Carefully disengage the VELCRO tapes and remove the insulation mat from the inner side of the door.
Subtask 52-22-21-860-053
D. Decrease the tension of the torsion spring as follows:
(Ref. Fig. 408/TASK 52-22-21-991-007)
(1)
Cut and remove the lockwire from the adjustment screw (365).
(2)
Loosen the adjustment screw (365) until the pretension lever (356) touches the stop (390).
4. Procedure
_________ Subtask 52-22-21-020-056
A. Removal of the Torsion Bar Assembly
(Ref. Fig. 408/TASK 52-22-21-991-007)
(1) Disconnect the connection link (386) from the torsion lever (381) as follows:
(a) Remove and discard the cotter pin (382) from the nut (383).
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Balance Mechanism
Figure 408/TASK 52-22-21-991-007
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1 1 May 01/04
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(b)
Remove the nut (383), the washers (384), the bush (385) and the bolt (388) from the torsion lever (381).
(c)
Disconnect the eye-end of the connection link (386) from the fork-end of the torsion lever (381).
(d)
If required, remove the bush (387) from the fork-end of the torsion lever (381).
(2)
Remove the retaining rings (354) and (377) from the pretension sleeve
(371) and the torsion tube (372).
(3)
Release the clamp (393) and remove the bushing halves (392) from the torsion tube (372).
(4)
Move the torsion spring (373) through the flange bearing (352) until it comes free from the door member.
(5)
Remove the torsion tube (372) as follows:
(a)
Release the lock washer (397) and remove the screw (396) from the torsion lever (381).
(b)
Remove the torsion lever (381) from its splined area of the torsion tube (372).
(c)
Move the torsion tube (372) rearwards until it comes free from the door member.
(d)
Remove the torsion tube (372) from the door structure.
(e)
If required, remove the nuts (395), the bolts (396) and the flange bearing (389).
(6)
Disconnect the pretension rod (364) from the pretension lever (356) as follows:
(a)
Remove and discard the cotter pin (363) from the nut (362).
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