DOC AIRBUS | AMM A320FInspection of the Engine after Engine Oil Overtemperature [PW11]
TASK 72-00-00-210-811-A
Inspection of the Engine after Engine Oil Overtemperature
Use this inspection procedure to examine the engine after operation with high engine oil temperature (oil overtemperature).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 72-00-00-860-109-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-220-180-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:47:19 UTC
Inspection of the Engine after Engine Oil Overtemperature
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
1. Reason for the JobUse this inspection procedure to examine the engine after operation with high engine oil temperature (oil overtemperature).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM] (POWER PLANT-DEMOUNTABLE) | |
| 437AL, 438AR | |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-814-A | Shutdown of the Engine |
| TASK 71-00-00-860-822-A | Start the Engine (Normal Manual Start) |
| TASK 71-00-00-860-823-A | Start the Engine (Normal Automatic Start) |
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-00-00-910-803-A | Engine Operation Limits and Guidelines |
| TASK 71-00-51-000-802-A | Removal of the Power Plant (Bootstrap Method) |
| TASK 71-00-51-000-802-A-01 | Removal of the Power Plant (JacXson Method) |
| TASK 71-00-51-400-802-A | Installation of the Power Plant (Bootstrap Method) |
| TASK 71-00-51-400-802-A-01 | Installation of the Power Plant (JacXson Method) |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
| TASK 79-00-00-210-811-A | Laboratory Analysis of the Engine Oil for Contamination |
| TASK 79-00-00-281-802-A | Inspection of the Magnetic Chip Collectors for Oil Contamination |
| TASK 79-00-00-281-804-A | Sampling of the Engine Oil |
| TASK 79-00-00-610-801-A | Check and Fill the Engine Oil |
| TASK 79-00-00-680-801-A | Drain the Engine Oil |
Inspection of the Engine after Engine Oil Overtemperature (TAT vs Altitude)Subtask 72-00-00-860-109-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the air conditioning panel 30VU, make sure that the engine bleed valves are off (the OFF legend is on).
4. Procedure(1) On the air conditioning panel 30VU, make sure that the engine bleed valves are off (the OFF legend is on).
Subtask 72-00-00-220-180-A ** ON A/C NOT FOR ALL
A. Inspection of the Engine after Engine Oil Overtemperature
(1) Obtain the data from the engine records that are related to the engine oil overtemperature operation.
(2) Examine the engine oil temperature, Total Air Temperature (TAT) and the altitude with the high oil temperature (oil overtemperature). Overtemperature is when the oil is more than the limits (Ref. AMM TASK 71-00-00-910-803).
(3) Examine the overtemperature range.
Table 601 - Overtemperature Range
Subtask 72-00-00-210-170-A ** ON A/C NOT FOR ALL (1) Obtain the data from the engine records that are related to the engine oil overtemperature operation.
(2) Examine the engine oil temperature, Total Air Temperature (TAT) and the altitude with the high oil temperature (oil overtemperature). Overtemperature is when the oil is more than the limits (Ref. AMM TASK 71-00-00-910-803).
(3) Examine the overtemperature range.
Table 601 - Overtemperature Range
| Range of High Oil Temperature | Condition of Engine Operation | Steps that Need to Be Performed before Engine Operation |
|---|---|---|
| 295 deg.F (146.11 deg.C) - 305 deg.F (151.67 deg.C) | Idle | If TAT and altitude are above line, no further action is required. Engine operation is correct. |
| 285 deg.F (140.56 deg.C) - 295 deg.F (146.11 deg.C) | Cruise | If TAT and altitude are below line, do the procedures for moderate oil overtemperature, refer to Para. 4. B. |
| 275 deg.F (135.00 deg.C) - 285 deg.F (140.56 deg.C) | Take-off | Correct the cause of the problem. Correct all damage caused by the high temperature. |
| 305 deg.F (151.67 deg.C) - 315 deg.F (157.22 deg.C) | Idle | Do the procedures for moderate oil overtemperature, refer to Para. 4. B. |
| 295 deg.F (146.11 deg.C) - 305 deg.F (151.67 deg.C) | Cruise | Correct the cause of the problem. |
| 285 deg.F (140.56 deg.C) - 295 deg.F (146.11 deg.C) | Take-off | Correct all damage caused by the high temperature. |
| Above 315 deg.F (157.22 deg.C) Above 305 deg.F (151.67 deg.C) Above 295 deg.F (146.11 deg.C) | Idle Cruise Take-off | Do the procedures for moderate oil overtemperature, refer to Para. 4. B. (1) throught 4. B. (4). Do the procedures for very high temperature, refer to Para. 4. C. Correct the cause of the problem. Correct all damage caused by the high temperature. |
B. Procedure after Moderate Oil Overtemperature
(1) Do an inspection of the engine magnetic chip collector probes for evidence of oil system contamination (Ref. AMM TASK 79-00-00-281-802).
(2) Get a sample of the engine oil (Ref. AMM TASK 79-00-00-281-804).
(3) Do a laboratory analysis of the engine oil for contamination (Ref. AMM TASK 79-00-00-210-811).
(a) Examine the engine oil for color, viscosity and acidity.
(b) If the oil fails the analysis, remove the engine from service.
(c) Do the inspections for very high temperature, go to Para. 4.C.
(4) Go to the Trouble Shooting Manual (TSM) and do the procedures to find and correct the high oil temperature indication.
(5) Make sure that the oil quantity is correct. Service the engine oil System, if necessary (Ref. AMM TASK 79-00-00-680-801) or (Ref. AMM TASK 79-00-00-610-801).
(6) Start the engine (Ref. AMM TASK 71-00-00-860-822) or (Ref. AMM TASK 71-00-00-860-823).
(7) Let the engine become stable for five minutes at MINIMUM IDLE.
(8) Shutdown the engine (Ref. AMM TASK 71-00-00-860-814).
(9) Safety Precautions
(a) Do the procedure to prevent engine motoring (Ref. AMM TASK 71-00-00-860-833).
(10) Get Access
(a) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
1 FOR [4020KM] (POWER PLANT-DEMOUNTABLE)
437AL 438AR
2 FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(b) Put an ACCESS PLATFORM 2M (6 FT) in position.
(11) Deactivation of the Thrust Reverser for Maintenance
(12) Get Access
(a) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
1 FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
2 FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
(13) Check the engine for oil leaks at the location of the replaced hardware.
(14) If there are leaks, repair the leaks.
(15) Make sure that the work area is clean and clear of tools and other items.
(16) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
(17) Do the re-activation of the thrust reverser after maintenance (Ref. AMM TASK 78-30-00-440-805).
(18) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(19) Remove the WARNING NOTICE(S).
(20) Remove the access platform(s).
(21) Start the engine (Ref. AMM TASK 71-00-00-860-822) or (Ref. AMM TASK 71-00-00-860-823)>.
(22) Let the engine become stable for five minutes at MINIMUM IDLE.
(23) Operate the engine for 30 minutes at 60 percent N1 power.
(a) The oil temperature should increase to the usual operating value.
(b) After the oil temperature gets to the usual operating value, record the engine oil temperature.
(c) If the oil temperature continues to increase more than the limits, decrease the power to idle.
(24) Operate the engine at idle power for five minutes and then shutdown the engine (Ref. AMM TASK 71-00-00-860-814).
(25) Compare the oil temperature results with the table 2.
Table 602 - Reference Table
Subtask 72-00-00-210-171-A ** ON A/C NOT FOR ALL (1) Do an inspection of the engine magnetic chip collector probes for evidence of oil system contamination (Ref. AMM TASK 79-00-00-281-802).
(2) Get a sample of the engine oil (Ref. AMM TASK 79-00-00-281-804).
(3) Do a laboratory analysis of the engine oil for contamination (Ref. AMM TASK 79-00-00-210-811).
(a) Examine the engine oil for color, viscosity and acidity.
(b) If the oil fails the analysis, remove the engine from service.
(c) Do the inspections for very high temperature, go to Para. 4.C.
(4) Go to the Trouble Shooting Manual (TSM) and do the procedures to find and correct the high oil temperature indication.
(5) Make sure that the oil quantity is correct. Service the engine oil System, if necessary (Ref. AMM TASK 79-00-00-680-801) or (Ref. AMM TASK 79-00-00-610-801).
(6) Start the engine (Ref. AMM TASK 71-00-00-860-822) or (Ref. AMM TASK 71-00-00-860-823).
(7) Let the engine become stable for five minutes at MINIMUM IDLE.
(8) Shutdown the engine (Ref. AMM TASK 71-00-00-860-814).
(9) Safety Precautions
(a) Do the procedure to prevent engine motoring (Ref. AMM TASK 71-00-00-860-833).
(10) Get Access
(a) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
1 FOR [4020KM] (POWER PLANT-DEMOUNTABLE)
437AL 438AR
2 FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(b) Put an ACCESS PLATFORM 2M (6 FT) in position.
(11) Deactivation of the Thrust Reverser for Maintenance
WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(a) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805). (12) Get Access
(a) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
1 FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
2 FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
(13) Check the engine for oil leaks at the location of the replaced hardware.
(14) If there are leaks, repair the leaks.
(15) Make sure that the work area is clean and clear of tools and other items.
(16) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
(17) Do the re-activation of the thrust reverser after maintenance (Ref. AMM TASK 78-30-00-440-805).
(18) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(19) Remove the WARNING NOTICE(S).
(20) Remove the access platform(s).
(21) Start the engine (Ref. AMM TASK 71-00-00-860-822) or (Ref. AMM TASK 71-00-00-860-823)>.
(22) Let the engine become stable for five minutes at MINIMUM IDLE.
(23) Operate the engine for 30 minutes at 60 percent N1 power.
(a) The oil temperature should increase to the usual operating value.
(b) After the oil temperature gets to the usual operating value, record the engine oil temperature.
(c) If the oil temperature continues to increase more than the limits, decrease the power to idle.
(24) Operate the engine at idle power for five minutes and then shutdown the engine (Ref. AMM TASK 71-00-00-860-814).
(25) Compare the oil temperature results with the table 2.
Table 602 - Reference Table
| EXAMINE | DAMAGE | DISPOSITION |
|---|---|---|
| Oil temperature (after repair per TSM procedure) | Oil temperature within permitted limits | Return engine to service. |
| | Oil temperature outside the limits (no change is seen in high temperature condition) | Return to Step 4.B. (4) and continue to follow troubleshooting procedures. Replaced hardware was not defective. |
C. Inspections for Very High Temperature
(1) Remove the engine (Ref. AMM TASK 71-00-51-000-802).
(a) Examine all the main bearings, seals, seal seats and nozzles.
(b) Examine all the accessory drive bearings, seals, seal seats and nozzles.
(c) Examine the fan drive gear box and accessory drive gears.
(d) Repair or replace all damaged parts.
(2) Install the engine (Ref. AMM TASK 71-00-51-400-802).
(3) Examine the assembly for foreign objects, damage and correct assembly.
(1) Remove the engine (Ref. AMM TASK 71-00-51-000-802).
(a) Examine all the main bearings, seals, seal seats and nozzles.
(b) Examine all the accessory drive bearings, seals, seal seats and nozzles.
(c) Examine the fan drive gear box and accessory drive gears.
(d) Repair or replace all damaged parts.
(2) Install the engine (Ref. AMM TASK 71-00-51-400-802).
(3) Examine the assembly for foreign objects, damage and correct assembly.