DOC AIRBUS | AMM A320FRemoval of the Flame Arrestor and Flange Assembly [CFMB]
TASK 72-56-00-000-001-A
Removal of the Flame Arrestor and Flange Assembly
1. Reason for the Job
To allow the inspection/check and the cleaning of the rear sump oil supply tube in the LPT frame.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 72-56-00-941-052-A ** ON A/C NOT FOR ALL
Subtask 72-56-00-020-050-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:43:20 UTC
Removal of the Flame Arrestor and Flange Assembly
1. Reason for the Job
To allow the inspection/check and the cleaning of the rear sump oil supply tube in the LPT frame.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 78-11-11-000-041-A | Removal of the Core Nozzle Assembly |
| TASK 78-11-12-000-041-A | Removal of the Centerbody |
Flame Arrestor and Flange AssemblySubtask 72-56-00-941-052-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 72-56-00-010-055-A ** ON A/C NOT FOR ALL (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).
B. Get Access
(1) Remove the core nozzle (Ref. AMM TASK 78-11-11-000-041).
(2) Remove the centerbody (Ref. AMM TASK 78-11-12-000-041).
4. Procedure(1) Remove the core nozzle (Ref. AMM TASK 78-11-11-000-041).
(2) Remove the centerbody (Ref. AMM TASK 78-11-12-000-041).
Subtask 72-56-00-020-050-B ** ON A/C NOT FOR ALL
A. Removal of the Flame Arrestor
(1) Remove the six bolts (20) which attach the flame arrestor (30) to the oil inlet cover through the flange assembly (160).
Subtask 72-56-00-020-051-B ** ON A/C NOT FOR ALL (1) Remove the six bolts (20) which attach the flame arrestor (30) to the oil inlet cover through the flange assembly (160).
B. Removal of the Flange Assembly
PRE SB CFMI 72-681
(2) Remove the twenty four bolts (70) which attach the mid circle of the flange assembly (160) to the LPT frame hub rear flange.
POST SB CFMI 72-681
(3) Remove the eight bolts (70) which attach the flange assembly (160) to the LPT frame.
END OF SB CFMI 72-681
(4) Remove the flange assembly (160) from the LPT frame.
(5) Remove and discard the gasket seal (80).
NOTE: This procedure is for Turbine Frame with Tangential Symetrical Section Struts only.
(1) Remove the sixteen bolts (150) which attach the flow path fairing to the outer circle of the flange assembly (160) through the plate lock (170). PRE SB CFMI 72-681
(2) Remove the twenty four bolts (70) which attach the mid circle of the flange assembly (160) to the LPT frame hub rear flange.
POST SB CFMI 72-681
(3) Remove the eight bolts (70) which attach the flange assembly (160) to the LPT frame.
END OF SB CFMI 72-681
(4) Remove the flange assembly (160) from the LPT frame.
(5) Remove and discard the gasket seal (80).