__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific circuit breaker(s) safety clip(s)
No specific warning notices
No specific access platform 2.5 m (8 ft. 2 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
36-22-17-000-001 Removal of the APU Overheat Sensing-Elements 36-12-51-991-001 Fig. 401
3. Job Set-up
__________ Subtask 36-12-51-865-050
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
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
1EFF : ALL 1 36-12-51Page 401 1 1 Aug 01/00R 1 1 1CES 1
Subtask 36-12-51-860-050
B. Aircraft Maintenance Configuration
(1) Put the warning notices in position:
-
in the cockpit on the Engine Control Panel 115VU to tell persons not to start the engine(s),
-
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) Put the access platform in position below the access panel 197BB. Subtask 36-12-51-010-050
C. Remove the access panel 197BB.
4. Procedure
_________ R (Ref. Fig. 401/TASK 36-12-51-991-001) Subtask 36-12-51-020-055
A. Removal of the Check Valve CAUTION : REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST,
_______
BEND OR CAUSE KINKS IN THE SENSING ELEMENTS.
NOTE : When you remove the APU bleed check valve, make sure that no parts
____ of the valve are missing (flaps, shaft and spring). If part(s) is (are) missing:
-Do an inspection of the APU bleed-air system and the air conditioning system to find this (these) parts before you install a new bleed check valve.
(1)
Loosen the clamp (8) and disconnect the duct (7) from the duct (5).
(2)
Un-clip the overheat sensing elements (6) from the duct (5) (Ref. TASK 36-22-17-000-001).
(3)
Loosen the clamp (9) from the bracket (10) and the duct (5).
(4)
Loosen the clamp (4) on the duct (5) and the housing (1).
(5)
Carefully pull the duct (5) away from the housing (1) to get access to the check valve (3).
(6)
Remove the clamp (4) from the elbow duct (5).
(7)
Remove the check valve (3) from the housing (1).
(8)
Put blanking caps on the open end of the duct (5) and the housing (1).
(9)
Remove and discard the packing (2).
R Check Valve Figure 401/TASK 36-12-51-991-001
1EFF : 1 1 1CES ALL 1 111 36-12-51 Page 403 May 01/05
TASK 36-12-51-400-001
Installation of the Check Valve WARNING : MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START
_______
WORK ON THE PNEUMATIC SYSTEM.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific warning notices
No specific access platform 2.5 m (8 ft. 2 in.) R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft)
B. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
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