(2)
Put the access platform at the fwd cargo door 825.
(3)
Remove the access panel (Ref. TASK 25-54-12-000-001) 131PW.
4. Procedure
_________
(Ref. Fig. 401/TASK 21-55-41-991-001) Subtask 21-55-41-020-050
A. Removal of the Emergency Ram-Air Check-valve
(1)
Remove the V-clamp (5).
(2)
Remove the clamp (2).
(3)
Remove the flange (3) together with the check valve (4).
(4)
Remove the check valve (4) from the flange (3).
5. Close-up
________
Emergency Ram Air Check Valve 4022HM
Figure 401/TASK 21-55-41-991-001
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TASK 21-55-41-400-001
Installation of the Emergency Ram-Air Check-Valve 4022HM
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 2 m (6 ft. 7 in.) R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 21-55-41-991-001 Fig. 401
3. Job Set-up
__________
Subtask 21-55-41-860-050
A. Aircraft Maintenance Configuration
(1)
Make sure that:
(a)
The cargo compartment door 825 is open (Ref. TASK 52-30-00-860-001).
(b)
The access platform is in position at the FWD cargo compartment door 825.
(2)
The access panel 131PW is removed (Ref. TASK 25-54-12-000-001).
4. Procedure
_________ (Ref. Fig. 401/TASK 21-55-41-991-001) Subtask 21-55-41-420-050
A. Installation of the Emergency Ram-Air Check-Valve
(1)
Clean the component interface and/or the adjacent area.
(2)
Make sure that the check valve flaps are in the correct condition.
(3)
Install the check valve (4) in the flange (3), make sure that the flaps open in the direction of the airflow.
(4)
Install the check valve (4) and the flange (3) in the bellows (1).
(5)
Install the V-clamp (5).
(6)
TORQUE the V-clamp (5) to 0.55 m.daN (48.67 lbf.in).
(7)
Install the clamp (2) on the bellows (1) and tighten.
5. Close-up
________ Subtask 21-55-41-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panel 131PW.
(3)
Remove the access platform(s).
(4)
Close the FWD cargo door 825. (Ref. TASK 52-30-00-860-002)
CHECK VALVE - EMERGENCY RAM AIR INLET (4022HM) - INSPECTION/CHECK
_________________________________________________________________ TASK 21-55-41-210-001 Detailed Visual Inspection of Emergency Ram-Air/Low Pressure Ground-Air
Check-Valve Flappers for Condition and Operation
1.
Reason for the Job
__________________
Refer to the MPD TASK: 215541-01
2.
Job Set-up Information
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