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 VALVE - ROTOR ACTIVE CLEARANCE START BLEED - REMOVAL/INSTALLATION

_________________________________________________________________
 TASK 75-23-10-000-002
 Removal of the Rotor Active Clearance Start Bleed Valve (4038KS)
 1. Reason for the Job
__________________
 This task is applicable for NON /P engines.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
 No specific blanking plug

R  No specific circuit breaker(s) safety clip(s) No specific soft-jawed pliers No specific warning notice No specific container 1 l (0.2641 USgal) No specific access platform 1 m (3 ft. 3 in.) 856A1612 1 WRENCH SET, SPANNER - AIRTUBE NUTS
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the R External Power 36-11-41-000-040 Removal of the Intermediate Pressure (IP) Bleed Check
 Valve (7110HM) 36-11-49-000-045 Removal of the Lower High Pressure Duct 36-11-49-000-048 Removal of the Fifth Stage Elbow Duct 36-11-51-000-042 Removal of the High Pressure Bleed Valve (4000HA) 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
 75-23-10-991-300 Fig. 401
 75-23-10-991-301 Fig. 402

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 3. Job Set-up
__________
 Subtask 75-23-10-941-052
 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 75-23-10-861-051
R B. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
R Subtask 75-23-10-865-057
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 75-23-10-010-055
R D. Get Access
R (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 75-23-10-040-054

R E. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 75-23-10-010-056
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
_________
 (Ref. Fig. 401/TASK 75-23-10-991-300, 402/TASK 75-23-10-991-301)
 Subtask 75-23-10-020-054

 A. Remove parts of the customer bleed system to get access to the RACSB air tube (70) coupling nut and attachment clamp and to the upper air start tube (80) attachment points as follows:
 (1) Remove the IP Bleed Check Valve (10) (Ref. TASK 36-11-41-000-040).

 (2) Remove the 5th Stage Elbow Duct (40) (Ref. TASK 36-11-49-000-048).

 (3) Remove the HP Bleed Valve (20) (Ref. TASK 36-11-51-000-042).

 (4) If necessary, remove the Lower High Pressure Duct (30) to get access to the attachment point of the upper air start tube to the combustion case at 9:15 o'clock (Ref. TASK 36-11-49-000-045).
　
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