(b)
Put the lower eye-end of the connection link (386) in position to the fork-end of the torsion lever (381).
(c)
Install the bolt (388), the bush (385), the washers (384) and the nut (383).
(d)
Tighten the nut (383) and safety it with the new cotter pin (382).
(4)
Move the torsion spring (373) into the flange bearing (379) or (352) and make sure that it engages with the torsion sleeve (372) and the pretension sleeve (371).
(5)
Make sure that the notches of the torsion spring (373), the torsion tube (372) and the pretension sleeve (371) align.
(6)
Install the retaining rings (377) and (354) into the flange bearings
(379) and (352).
(7)
Put the bushings halves (392) in the position on the torsion spring
(373) and attach it with clamp (393).
Subtask 52-22-21-420-056
C. Installation of the Pretension Unit
(Ref. Fig. 408/TASK 52-22-21-991-007)
(1)
If removed, put the bearing fitting (367) in position and attach it with the bolts (399) and the nuts (398) to the door structure.
(2)
If removed, install the spherical bearing (366) into the bearing fitting (367).
(3)
Connect the pretension rod (364) with the pretension lever (356) as follows:
(a)
If removed, install the bush (358) to the fork-end of the pretorsion lever (356).
(b)
Put the eye-end of the pretension rod (364) in position to the fork-end of the pretension lever (356).
1EFF : 301-399, 1 52-22-21Page 477 1 1 May 01/04 1 1 1CES 1
(c)
Install the bolt (360), the bush (359), the washers (361) and the nut (362).
(d)
Tighten the nut (362) and safety it with the new cotter pin (363).
(4)
Put the pretension rod (364) in position to the bearing fitting (367) and install the adjustment screw (365).
(5)
Tighten the adjustment screw (365) until the gap "X" between the adjustment rod (364) and the bearing fitting (367) is maximum 5.0 mm (0.1968 in.).
Subtask 52-22-21-820-051
D. Adjustment of the Pretension Unit
(1)
Install a ballast weight of 8.0 kg (17.637 lb) to compare the weight of the door lining.
(2)
Close the door and measure the force which is necessary to operate the the inboard handle.
NOTE : The force must be less than 15.0 daN (33.7213 lbf).
____
(3) Operate the inboard handle and measure the force which is necessary to open the door.
NOTE : The force must be less than 15.0 kg (33.0693 lb). The
____ difference between the "open" and "close" force must be smaller than 5.0 daN (11.2404 lbf).
(4)
If the force is more than permitted, turn the adjustment screw (365) clockwise to increase the tension of the torsion spring (373).
(5)
Do the subsequent check of the balance mechanism:
(a)
Make sure that the door is partly opened.
(b)
Move the roller lever outbord to release the door detent assembly.
(c)
Make sure that the opened door remains in its fully lifted position.
(d)
If the door moves down, turn the adjustment screw (365) until the door remains in the position.
1EFF : 301-399, 1 52-22-21Page 478 1 1 May 01/04 1 1 1CES 1
(6) If the tension of the torsion spring (373) is correct, safety the adjustment screw (365) with lockwire, corrosion resistance steel, dia. 0.8 mm (0.030 in.). ________
5. Close-up
Subtask 52-22-21-865-061
A. Make sure that this(these) circuit breaker(s) is(are) closed:
13WN, 15WN, 48WV
Subtask 52-22-21-410-058
B. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the insulation mats in the door structure.
(3)
Install the door lining (Ref. TASK 25-23-47-400-012) or (Ref. TASK 25-23-47-400-013).
(4)
Do the special precaution for the door damper and emergency operation cylinder (Ref. TASK 52-22-00-860-004).
(5)
Close applicable the door (Ref. TASK 52-22-00-410-001).
(6)
Remove the access platform(s).
1EFF : 301-399, 1 52-22-21Page 479 1 1 May 01/04 1 1 1CES 1 MECHANISM - EMERGENCY ESCAPE SLIDE RELEASE - REMOVAL/INSTALLATION
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