-
in the cockpit on the AIR COND Overhead Control Panel 30VU to tell persons not to push in the APU BLEED pushbutton switch,
- on the HP ground connector to tell persons not to pressurize the pneumatic system.
(2)
Make sure that the access platform is in position below the access panel 197BB.
(3)
Make sure that the access panel 197BB is open.
(4)
Make sure that the AFT Cargo-Compartment Door is open (Ref. TASK 52-30-00-860-001).
(5) Make sure that the sidewall panel 151CW is removed.
Subtask 36-12-51-865-057
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/X FEED/VALVE/BAT 2HV D13 49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11
122VU AIR BLEED/ENG 2/CTL 3HA2 Z23 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22 122VU AIR BLEED/X FEED VALVE/NORM 1HV Z20
4. Procedure
_________ (Ref. Fig. 402/TASK 36-12-51-991-003) Subtask 36-12-51-420-055 R A. Installation of the APU Bleed Check-Valve Assembly
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Install the seal (5).
(4)
Put the APU-Bleed Check-Valve Assembly (6) in the installation position.
(a) Make sure that the axis of the APU-Bleed Check-Valve Assembly (6) R is installed in a vertical position.
(5)
Install the bolts (7), the washers (1) and the nuts (2).
(6)
TORQUE the nuts (2) to between 0.7 and 0.8 m.daN (61.94 and 70.79 lbf.in).
(7)
Remove the blanking caps from the ducts (4) and (9).
(8)
Install the clamps (3) and (8).
(9)
TORQUE the nuts of the clamps (3) and (8) to between 0.4 and 0.5 m.daN (35.39 and 44.24 lbf.in).
Subtask 36-12-51-865-058
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HV, 2HV, 2HA1, 2HA2, 3HA1, 3HA2
Subtask 36-12-51-790-050
C. Leak Test of the Pneumatic Connections
(1)
Do the ground air pre-conditioning with the APU (Ref. TASK 12-33-21-618-001).
(2)
Make sure that there are no leaks between the connections of the APU Bleed Check-Valve (6) and the ducts (4) and (9).
5. Close-up
________ Subtask 36-12-51-410-052
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 197BB.
(3)
In the AFT Cargo-Compartment, install the sidewall panel 151CW.
(4)
Close the AFT Cargo-Compartment Door (Ref. TASK 52-30-00-860-002).
Subtask 36-12-51-942-055
B. Put the aircraft back to the serviceable condition.
(1)
Remove the warning notice(s).
(2)
Remove the access platform(s).
VALVE - APU BLEED CHECK (7260HM) - INSPECTION/CHECK
___________________________________________________
TASK 36-12-51-200-001 Inspection of the APU Bleed Check-Valve (7260HM) WARNING : MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START
_______ WORK ON THE PNEUMATIC SYSTEM.
1.
Reason for the Job
__________________
Refer to the MPD TASK: 361251-01
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific warning notices
No specific access platform(s) 2.5 m (8 ft. 2 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
36-12-51-000-001 Removal of the Check Valve 36-12-51-400-001 Installation of the Check Valve 36-12-51-991-002 Fig. 601
3. Job Set-up
__________
Subtask 36-12-51-865-053
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/X FEED/VALVE/BAT 2HV D13 49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11
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