DOC AIRBUS | AMM A320FVisual Inspection of the Oil System [CFMI]
TASK 79-00-00-210-005-A
Visual Inspection of the Oil System
1. Reason for the Job
To make sure that the oil system is serviceable, and check for leakage, staining or wetting:
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 79-00-00-941-052-A ** ON A/C NOT FOR ALL
Subtask 79-00-00-210-054-A ** ON A/C NOT FOR ALL
Subtask 79-00-00-410-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:54:36 UTC
Visual Inspection of the Oil System
1. Reason for the Job
To make sure that the oil system is serviceable, and check for leakage, staining or wetting:
- Leakage is the collect of liquid into a formation of a droplet, or the expectancy of a droplet formation in less than 15 minutes minimum running time.
- Wetting is a condition where small area around a connection is moist. The area does not grow with running, with 10 minutes minimum running time at idle or above.
- Staining is a discoloration. It most commonly occurs by baking residue oil or grease after high temperature operation.
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP1039) | acetone |
| (Material No.CP2010) | white spirit |
| (Material No.CP2011) | stoddard solvent |
| (Material No.CP2559) | ardrox 552 |
| (Material No.CP2560) | turco ind 79 |
| (Material No.CP2566) | mag-chem teksol |
| (Material No.CP2584) | degreasol 99 R |
| (Material No.CP2656) | mag-chem skysol |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-790-007-A | Leak Test of the Accessory Gearbox pad (AGB) Starter cavity (between equipement and AGB) |
| TASK 71-13-00-010-040-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-081-041-A | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-A | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-A | Opening of the Thrust Reverser Doors |
| TASK 78-36-00-410-040-A | Closing of the Thrust Reverser Doors |
| TASK 79-00-00-210-007-A | Visual Inspection of the Aft Sump Oil System |
Visual Inspection of the TRF tubesSubtask 79-00-00-941-052-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 79-00-00-010-051-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) 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 79-00-00-040-050-A ** ON A/C NOT FOR ALL Subtask 79-00-00-010-052-A ** ON A/C NOT FOR ALL (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.
D. Open the thrust-reverser cowl 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(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 79-00-00-210-054-A ** ON A/C NOT FOR ALL
A. Inspection of the oil system components, scavenge and supply tubes.
(1) Inspect the components that follows:
(a) Internal parts of the fan cowls.
(b) Internal parts of the thrust reverser cowls.
(c) Engine surface
(d) Oil system components:
(2) Inspect the tubes that follows:
(b) Tubes and tube couplings with cracks are not serviceable.
(c) There is no limit to the number of nicks and scratches that are permitted up to 0.01 in. (0.25 mm) depth (after removal of the high metal).
(d) Two dents for each tube are permitted if they are of a smooth contour up to 0.05 in. (1.27 mm) depth.
(3) No leakage is allowed; staining or wetting are allowed.
(4) If you suspect leakage, do as follows:
(a) Clean the suspected area with stoddard solvent (Material No.CP2011) or acetone (Material No.CP1039) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) or white spirit (Material No.CP2010) .
(b) Operate the engine at 70 percent N1 or above is necessary to pressurize the oil system and to get accurate results during leakage check (Ref. AMM TASK 71-00-00-790-007). One some marginal cases, leaks at AGB pad seal, or damaged O-rings at equipment drive shaft level can be isolated by conducting engine runs at higher engine power runs.
(c) Check the suspected area. If you identify leakage, tighten the connecting nuts to the appropriate torque value, and/or replace defective items.
(5) If you do not find external oil leakage, do a visual inspection of the tubes at the turbine rear frame (TRF) interface for oil leakage and coking.
(a) If you find oil leakage or important quantity of oil coking at the TRF interface, do a check of the aft sump oil system (Ref. AMM TASK 79-00-00-210-007).
Subtask 79-00-00-210-055-A ** ON A/C NOT FOR ALL (1) Inspect the components that follows:
(a) Internal parts of the fan cowls.
(b) Internal parts of the thrust reverser cowls.
(c) Engine surface
(d) Oil system components:
- oil tank
- antisiphon device
- lubrication unit.
(2) Inspect the tubes that follows:
NOTE: To do this check, look for oil stripes and drops.
(a) Worn or cracked hoses are not serviceable. (b) Tubes and tube couplings with cracks are not serviceable.
(c) There is no limit to the number of nicks and scratches that are permitted up to 0.01 in. (0.25 mm) depth (after removal of the high metal).
(d) Two dents for each tube are permitted if they are of a smooth contour up to 0.05 in. (1.27 mm) depth.
(3) No leakage is allowed; staining or wetting are allowed.
(4) If you suspect leakage, do as follows:
(a) Clean the suspected area with stoddard solvent (Material No.CP2011) or acetone (Material No.CP1039) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) or white spirit (Material No.CP2010) .
(b) Operate the engine at 70 percent N1 or above is necessary to pressurize the oil system and to get accurate results during leakage check (Ref. AMM TASK 71-00-00-790-007). One some marginal cases, leaks at AGB pad seal, or damaged O-rings at equipment drive shaft level can be isolated by conducting engine runs at higher engine power runs.
(c) Check the suspected area. If you identify leakage, tighten the connecting nuts to the appropriate torque value, and/or replace defective items.
(5) If you do not find external oil leakage, do a visual inspection of the tubes at the turbine rear frame (TRF) interface for oil leakage and coking.
(a) If you find oil leakage or important quantity of oil coking at the TRF interface, do a check of the aft sump oil system (Ref. AMM TASK 79-00-00-210-007).
B. Inspect attachment part of the oil tubes.
(1) Replace broken or cracked brackets.
(2) Replace worn clamps.
(3) Replace nuts and bolts that are not there.
(4) Tighten loose nuts and bolts to the appropriate torque value.
5. Close-up(1) Replace broken or cracked brackets.
(2) Replace worn clamps.
(3) Replace nuts and bolts that are not there.
(4) Tighten loose nuts and bolts to the appropriate torque value.
Subtask 79-00-00-410-052-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 cowl 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 79-00-00-440-050-A ** ON A/C NOT FOR ALL Subtask 79-00-00-410-051-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser cowl 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).