A320飞机维护手册 AMM AIR 空气(31)

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 TASK 75-26-10-000-001
 Removal of the Transient Bleed Valve
 1. Reason for the Job
__________________
 This task is applicable for /P engines.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific  blanking caps
R  No specific circuit breaker(s) safety clip(s) No specific container 1 liter (0.25 US gal) No specific protective caps No specific soft-jawed pliers No specific warning notice No specific access platform 1 m (3 ft. 3 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
R  24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
R External Power 71-13-00-010-040 Opening of the Fan Cowl Doors 78-30-00-481-041 Make the Thrust Reverser Unserviceable for Maintenance 78-36-00-010-040 Opening of the Thrust Reverser Doors 75-26-10-991-301 Fig. 401
R  75-26-10-991-302 Fig. 402
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 3. Job Set-up
__________
 Subtask 75-26-10-941-050
 A. Safety Precautions
 (1) On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3) On the overhead maintenance panel 50VU:

 (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b) Put a warning notice to tell persons not to energize the FADEC

 

 1(2). R
R Subtask 75-26-10-861-050
R B. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
R Subtask 75-26-10-865-050
R C. Open, safety and tag this(these) circuit breaker(s):
R -------------------------------------------------------------------------------R PANEL DESIGNATION IDENT. LOCATION R -------------------------------------------------------------------------------R 49VU FUEL/LP VALVE/MOT1/ENG2 2QG A09 R 49VU FUEL/LP VALVE/MOT1/ENG1 1QG A08
 Subtask 75-26-10-010-050
R D. Get Access
 (1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR.

 (2) Put the access platform in position.

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 Subtask 75-26-10-040-050

R E. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 75-26-10-010-051
R F. Open the thrust-reverser cowl doors (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR.
 4. Procedure
_________ R (Ref. Fig. 401/TASK 75-26-10-991-301, 402/TASK 75-26-10-991-302) Subtask 75-26-10-020-050
 A. Remove the Transient Bleed Valve (TBV).
 (1) Disconnect the electrical connectors as follows:

 (a) Disconnect the electrical connectors (130) and (140) from the TBV (10). Use soft-jawed pliers if necessary.

 (b) Install blanking caps on the open ends of the electrical connectors (130) and (140) and on the electrical connectors on the TBV (10).

 

 (2) Remove the TBV air outlet and inlet tubes as follows:

 (a) Loosen the clamp (110) that attaches the TBV air signal tube

 (120) to the outlet port of the TBV (10).

 (b) Remove the TBV air signal tube (120) from the outlet port of the TBV (10).

 (c) Loosen the clamp (100) that attaches the TBV air inlet tube (90) to the inlet port of the TBV (10).

 (d) Remove the TBV air inlet tube (90) from the inlet port of the TBV (10).

 (e) Install blanking caps on the open ends of the inlet tube and air signal tube and on the inlet and outlet ports of the TBV.

 

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 Transient Bleed Valve - Removal/Installation
　
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