Inspection of the Rotor Active Clearance Start Bleed (RACSB) Valve [CFMB]

TASK 75-23-10-200-002-A
Inspection of the Rotor Active Clearance Start Bleed (RACSB) Valve

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 75-23-10-000-002-A	Removal of the Rotor Active Clearance Start Bleed Valve
TASK 75-23-10-400-002-A	Installation of the Rotor Active Clearance Start Bleed Valve
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
RACSB Valve Inspection

3. Job Set-up
Subtask 75-23-10-941-053-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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(S) to tell persons not to energize the FADEC 1(2).

Subtask 75-23-10-010-057-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 75-23-10-040-055-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 75-23-10-010-059-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors: (Ref. AMM TASK 78-36-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 75-23-10-210-052-A ** ON A/C NOT FOR ALL

A. Do a visual inspection of the rotor active clearance start bleed (RACSB) valve as follows:

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Valve unit for :
A.Cracks	Not serviceable	Replace the valve (Ref. AMM TASK 75-23-10-000-002) and (Ref. AMM TASK 75-23-10-400-002).
B.Deformation	Not serviceable	Replace the valve (Ref. AMM TASK 75-23-10-000-002) and (Ref. AMM TASK 75-23-10-400-002).
C.Nicks or scratches	not serviceable	Replace the valve (Ref. AMM TASK 75-23-10-000-002) and (Ref. AMM TASK 75-23-10-400-002)
D.Loose bolts or nuts	Not serviceable	TORQUE the bolts (Ref. AMM TASK 75-23-10-400-002)
2.Flange joints for : A.Cracks	Not serviceable	Replace the valve (Ref. AMM TASK 75-23-10-000-002) and (Ref. AMM TASK 75-23-10-400-002).
B.Deformed or bends	Not serviceable	Replace the valve (Ref. AMM TASK 75-23-10-000-002) and (Ref. AMM TASK 75-23-10-400-002).

5. Close-up
Subtask 75-23-10-410-056-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).

Subtask 75-23-10-440-053-A ** ON A/C NOT FOR ALL

B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 75-23-10-410-057-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:10:12 UTC