DOC AIRBUS | AMM A320FRemoval of the Control Alternator [CFMB]
TASK 73-21-30-000-001-A
Removal of the Control Alternator
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 73-21-30-941-051-A ** ON A/C NOT FOR ALL
Subtask 73-21-30-020-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:00:24 UTC
Removal of the Control Alternator
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - PROTECTION |
| No specific | AR | CLOSURE |
| No specific | AR | COVER - PROTECTION |
| No specific | AR | PIPETTE |
| No specific | AR | PLIERS - JAWED, SOFT |
| No specific | AR | WARNING NOTICE(S) |
| 856A2717 | 1 | ADAPTER-LOCK CORE ENGINE |
| 856A2953 | 1 | GUIDE PINS STATOR ALTERNATOR |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2442) | engine oil |
| (Material No.CP5075) | corrosion protective additive |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 72-63-00-000-002-A | Removal of the Handcranking Drive Cover |
Control AlternatorSubtask 73-21-30-941-051-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 73-21-30-010-052-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. Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 73-21-30-020-053-A ** ON A/C NOT FOR ALL
A. Disconnect the electrical connectors and lube tube
(1) Disconnect the electrical cable connectors, Channel A (10) and Channel B (20) from the control alternator (30). Use PLIERS - JAWED, SOFT if necessary.
(2) Install CAP - PROTECTION on the electrical cables and on the control alternator electrical connectors.
(3) If necessary, for ease of removal of the alternator stator, remove the lube (40) as follows:
(a) Remove the two bolts (50) and two nuts (100) from the clamps (60) and remove clamps (60) from lube tube (40).
(b) Remove the four bolts (70) and bracket (80) that attach the lube tube to the forward side of the AGB and the four bolts (90) and washers (200) that attach the lube tube (40) to the lube module (110).
(c) Carefully remove the lube tube (40) from the AGB and lube module (110).
(d) Remove and discard the two gaskets (120) and (300) from each end of the lube tube (40).
(e) Install COVER - PROTECTION and CLOSURE on each end of the lube tube (40), on the lube module (110) and on the AGB attachment pad.
Subtask 73-21-30-020-052-A ** ON A/C NOT FOR ALL (1) Disconnect the electrical cable connectors, Channel A (10) and Channel B (20) from the control alternator (30). Use PLIERS - JAWED, SOFT if necessary.
(2) Install CAP - PROTECTION on the electrical cables and on the control alternator electrical connectors.
(3) If necessary, for ease of removal of the alternator stator, remove the lube (40) as follows:
(a) Remove the two bolts (50) and two nuts (100) from the clamps (60) and remove clamps (60) from lube tube (40).
(b) Remove the four bolts (70) and bracket (80) that attach the lube tube to the forward side of the AGB and the four bolts (90) and washers (200) that attach the lube tube (40) to the lube module (110).
(c) Carefully remove the lube tube (40) from the AGB and lube module (110).
(d) Remove and discard the two gaskets (120) and (300) from each end of the lube tube (40).
(e) Install COVER - PROTECTION and CLOSURE on each end of the lube tube (40), on the lube module (110) and on the AGB attachment pad.
B. Remove the control alternator as follows:
(2) Install three 856A2953 GUIDE PINS STATOR ALTERNATOR (856A2953G01) into the three bolt holes of the control alternator attachment pad.
(4) Remove and discard the O-ring (210) from the recess on the AGB pad.
(5) Remove the guide pins from the attached pad.
(6) If necessary, remove the alternator rotor (140) as follows:
(a) Remove the handcranking drive cover (Ref. AMM TASK 72-63-00-000-002).
(b) Install the 856A2717 ADAPTER-LOCK CORE ENGINE (856A2717G01) in the handcranking drive pad and safety with the two bolts provided. Tighten with your hand.
(c) Remove and discard the nut (170) that safeties the alternator rotor (140) to the AGB drive shaft and remove the alternator rotor (140).
(7) Remove the two bolts securing the 856A2717 ADAPTER-LOCK CORE ENGINE (856A2717G01) to the handcranking drive pad and remove the 856A2717 ADAPTER-LOCK CORE ENGINE (856A2717G01).
(8) When you remove equipment from the AGB, apply storage oil on the bearing as follows:
(9) Install COVER - PROTECTION over the alternator rotor (140), the handcranking drive pad and the end of the AGB drive shaft.
NOTE: The control alternator is lubricated with AGB oil; it is normal to find oil in this unit itself.
(1) Remove the attachment bolts (180) and washers (130) from the control alternator. (2) Install three 856A2953 GUIDE PINS STATOR ALTERNATOR (856A2953G01) into the three bolt holes of the control alternator attachment pad.
NOTE: If necessary, make the guide pins from 0.25 in. (6.35 mm) DIA stock, with 0.25-28 threads on one end and approximately 4 in. (101.6 mm) in overall length.
(3) Pull the alternator forward. Be careful not to damage the windings in the alternator stator. (4) Remove and discard the O-ring (210) from the recess on the AGB pad.
(5) Remove the guide pins from the attached pad.
(6) If necessary, remove the alternator rotor (140) as follows:
(a) Remove the handcranking drive cover (Ref. AMM TASK 72-63-00-000-002).
(b) Install the 856A2717 ADAPTER-LOCK CORE ENGINE (856A2717G01) in the handcranking drive pad and safety with the two bolts provided. Tighten with your hand.
(c) Remove and discard the nut (170) that safeties the alternator rotor (140) to the AGB drive shaft and remove the alternator rotor (140).
(7) Remove the two bolts securing the 856A2717 ADAPTER-LOCK CORE ENGINE (856A2717G01) to the handcranking drive pad and remove the 856A2717 ADAPTER-LOCK CORE ENGINE (856A2717G01).
(8) When you remove equipment from the AGB, apply storage oil on the bearing as follows:
CAUTION:
BEARINGS ARE REALLY SENSITIVE TO CORROSION; A GOOD LUBRICATION IS HIGHLY RECOMMENDED.
(a) Mix 7 percent of corrosion protective additive (Material No.CP5075) with 93 percent of engine oil (Material No.CP2442) and lightly coat the appropriate bearing with a PIPETTE, in order to avoid corrosion. (9) Install COVER - PROTECTION over the alternator rotor (140), the handcranking drive pad and the end of the AGB drive shaft.