(a)
in zone 410 for the left pylon,
(b)
in zone 420 for the right pylon.
(2)
Remove these access doors :
(a)
For the left pylon: 413DL, 413CL, 414CR
(b)
For the right pylon: 423DL, 423CL, 424CR
4. Procedure
_________ Subtask 54-52-11-020-050
A. Removal of the Pressure Relief Door
(Ref. Fig. 401/TASK 54-52-11-991-001)
(1)
Open the pressure relief doors (1) and (2).
(2)
Remove the spring (11).
(3)
Remove the cotter pins (9) and discard them.
(4)
Remove the washers (6), the pin (10) and the shims (7) and (8).
(5)
Remove the nut (5), the bolt (12) and the washer (13).
(6)
Remove the shims (14), (15), (3) and (4).
(7)
Remove the nut (21), the bolt (17) and the washers (16) and (18).
(8)
Remove the shims (19) and (20).
Pressure Relief Doors
Figure 401/TASK 54-52-11-991-001
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(9) Remove the pressure relief doors (1) and (2). Subtask 54-52-11-020-051
B. Removal of the Arch Assembly
(Ref. Fig. 402/TASK 54-52-11-991-002)
(1)
Remove the screw (34).
(2)
Remove the nut (37), the bolt (35) the washer (36) and the spacer (38).
(3)
Remove the nuts (33), the bolts (31) and the spacers (32).
(4)
Remove the arch assembly (39).
Top Arch of the Pressure Relief Doors
Figure 402/TASK 54-52-11-991-002
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TASK 54-52-11-400-001
Installation of the Pressure Relief Doors
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Expendable Parts
-------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION |IPC-CSN
-------------------------------------------------------------------------------
Rcotter pins 54-52-11 02A-060
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
78-30-00-081-041 Make the Thrust Reverser Serviceable after
Maintenance
78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
54-52-11-991-001 Fig. 401
54-52-11-991-002 Fig. 402
3. Job Set-up
__________
Subtask 54-52-11-860-050
A. Aircraft Maintenance Configuration
(1)
Make sure that the access platform is in position.
(2)
Make sure that the warning notice(s) is in position.
(3)
Make sure that the thrust reversers are unserviceable (Ref. TASK 78-30-00-481-041).
4. Procedure
_________
Subtask 54-52-11-420-050
A. Installation of the Arch Assembly
(Ref. Fig. 402/TASK 54-52-11-991-002)
(1)
Put the arch assembly (39) in position.
(2)
Install the spacers (32), the bolts (31) and the nuts (33).
(3)
Install the spacer (38), the washer (36), the bolt (35) and the nut (37). Tighten the nut.
(4)
Install the screw (34) and tighten it. Subtask 54-52-11-420-051
B. Installation of the Pressure Relief Doors
(Ref. Fig. 401/TASK 54-52-11-991-001)
(1)
Install the pressure relief doors (1) and (2).
(2)
Install the shims (20) and (19).
(3)
Install the washers (18) and (16), the bolt (17) and the nut (21). Tighten the nut.
(4)
Install the shims (4), (3), (15) and (14).
(5)
Install the washer (13), the bolt (12), the nut (5). Tighten the nut.
(6)
Install the shims (8) and (7), the pin (10) and the washers (6).
(7)
Install the cotter pins (11) and safety them.
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