DOC AIRBUS | AMM A320FInstallation of the Permanent Magnet Generator (PMG) and Cooling Fan Assembly (APS 3200)
TASK 49-52-53-400-001-A
Installation of the Permanent Magnet Generator (PMG) and Cooling Fan Assembly (APS 3200)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 49-52-53-860-050-A ** ON A/C NOT FOR ALL
Subtask 49-52-53-420-050-A ** ON A/C NOT FOR ALL
Subtask 49-52-53-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:41:44 UTC
Installation of the Permanent Magnet Generator (PMG) and Cooling Fan Assembly (APS 3200)
WARNING:
DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03ABA1) | Synthetic base Lubricating Oil-Turbine Engine - - |
| (Material No.03ABB1) | Synthetic base Lubricating Oil-Turbine Engine Low Temp. - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315 | TAIL CONE APU AND ACCESSORY COMPARTMENT |
| 316 | TAIL CONE APU AND ACCESSORY COMPARTMENT |
| 315AL, 316AR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 13 | PACKING | AIPC 49-52-04-50-150 |
| 14 | PACKING | AIPC 49-52-04-50-160 |
| 13 | PACKING | AIPC 49-52-84-20-130 |
| 14 | PACKING | AIPC 49-52-84-20-140 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 49-00-00-710-008-A | Operational Test of the APU |
| TASK 52-41-00-010-001-A | Open the APU Doors for Access |
| TASK 52-41-00-410-001-A | Close the APU Doors after Access |
PMG and Cooling Fan with Compartment Cooling Valve InstalledSubtask 49-52-53-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3) Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(5) Make sure that the access platform is in position below the APU compartment.
(6) Make sure that the APU access doors are open (Ref. AMM TASK 52-41-00-010-001).
(7) Make sure that the LIGHT control switch 11LJ is set to the on position.
Subtask 49-52-53-865-051-A ** ON A/C NOT FOR ALL (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3) Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(5) Make sure that the access platform is in position below the APU compartment.
(6) Make sure that the APU access doors are open (Ref. AMM TASK 52-41-00-010-001).
(7) Make sure that the LIGHT control switch 11LJ is set to the on position.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
Subtask 49-52-53-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the PMG and Cooling Fan Assembly
(a) Clean and do an inspection of the fan and APU interfaces for damage.
(b) Do a visual inspection of the cooling-fan shaft gear-teeth for wear or missing teeth.
(c) Do an inspection of the internal gear-teeth through the gearbox hole, for wear or missing teeth.
(d) Clean and do an inspection of the ducts and clamps for damage and replace as necessary.
(e) Lubricate the new AIPC 49-52-04-50-160 PACKING (14) or AIPC 49-52-84-20-140 PACKING (14) and the new AIPC 49-52-04-50-150 PACKING (13) or AIPC 49-52-84-20-130 PACKING (13) with Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(2) Install the PMG and cooling fan assembly (compartment cooling valve installed - On APUs with the Mod 6 Dot on the modification plate).
(a) Install the new packing (14) on the cooling fan (12).
(b) Install the new packing (13) on the fan buffer-air transfer-tube.
(c) Put the clamp (15) in position on the gearbox flange (16).
(d) Align the locating pin (17) with the key-hole and install the fan (12) with the clamp (15).
(e) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
.
(f) Lightly tap the clamp (15) with a MALLET - WOODEN to make sure that the clamp is correctly installed.
(g) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN ) again.
(h) Put the clamp (7) in position and attach the duct (6) to the fan (12).
(i) TORQUE the clamp (7) to between 18.9 and 18 lbf.in (0.21 and 0.20 m.daN ).
(j) Put the clamp (4) in position on the duct (5) and put the cooling valve (3) into the duct (5).
(k) Install the cooling valve (3) on the fan (12) with the bolts (9).
(l) Attach the tube (11) to the cooling fan union.
(m) TORQUE the bolts (9) to between 42 and 40 lbf.in (0.47 and 0.45 m.daN ).
(n) TORQUE the clamp (4) to between 16 and 10 lbf.in (0.18 and 0.11 m.daN ).
(o) TORQUE the tube (11) to between 150 and 135 lbf.in (1.70 and 1.53 m.daN ).
(p) Install the duct (1) with the clamps (2) and (10).
(q) TORQUE the clamps (2) and (10) to between 13.65 and 13 lbf.in (0.154 and 0.147 m.daN ).
(r) Make sure that all the electrical connections are clean and in the correct condition.
(s) Install the electrical connector (8).
(3) Install the PMG and cooling fan assembly (compartment cooling valve not installed and the cooling valve duct installed - On APUs with the Mod 6 Dot deleted on the modification plate).
(a) Install the new packing (14) on the cooling fan (12).
(b) Install the new packing (13) on the fan buffer-air transfer-tube.
(c) Put the clamp (15) in position on the gearbox flange (16).
(d) Align the locating pin (17) with the key-hole and install the fan (12) with the clamp (15).
(e) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN ).
(f) Lightly tap the clamp (15) with a MALLET - WOODEN to make sure that the clamp is correctly installed.
(g) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN ) again.
(h) Put the clamp (7) in position and attach the duct (6) to the fan (12).
(i) TORQUE the clamp (7) to between 18.9 and 18 lbf.in (0.21 and 0.20 m.daN ).
(j) Put the clamp (4) in position on the duct (5) and put the cooling duct (18) on the duct (5).
(k) Safety the cooling duct (18) on the fan (12) with the bolts (19).
(l) TORQUE the bolts (19) to between 56 and 51 lbf.in (0.63 and 0.58 m.daN ).
(m) TORQUE the clamp (4) to between 16 and 10 lbf.in (0.18 and 0.11 m.daN ).
(n) Install the duct (1) with the clamps (2) and (10).
(o) TORQUE the clamps (2) and (10) to between 13.65 and 13 lbf.in (0.154 and 0.147 m.daN ).
(p) Make sure that all the electrical connections are clean and in the correct condition.
(q) Install the electrical connector (8).
(4) Install the PMG and cooling fan assembly (compartment cooling valve and cooling valve duct not installed).
(a) Install the new packing (14) on the cooling fan (12).
(b) Install the new packing (13) on the fan buffer-air transfer-tube.
(c) Put the clamp (15) in position on the gearbox flange (16).
(d) Align the locating pin (17) with the key-hole and install the fan (12) with the clamp (15).
(e) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN ).
(f) Lightly tap the clamp (15) with a MALLET - WOODEN to make sure that the clamp is correctly installed.
(g) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN ) again.
(h) Put the clamp (7) in position and attach the duct (6) to the fan (12).
(i) TORQUE the clamp (7) to between 18.9 and 18 lbf.in (0.21 and 0.20 m.daN ).
(j) Install the duct (1) with the clamps (2) and (10).
(k) TORQUE the clamps (2) and (10) to between 13.65 and 13 lbf.in (0.154 and 0.147 m.daN ).
(l) Make sure that all the electrical connections are clean and in the correct condition.
(m) Install the electrical connector (8).
Subtask 49-52-53-865-052-A ** ON A/C NOT FOR ALL CAUTION:
YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.
CAUTION:
-YOU MUST NOT INCREASE THE TIGHTENING TORQUE MORE THAN THE MAXIMUM VALUE.
- APPLY ALL TIGHTENING TORQUES WITH A TORQUE WRENCH OR A CALIBRATED SCREWDRIVER.
CAUTION:
DO NOT TORQUE THE V-CLAMP(S) TO MORE THAN THE SPECIFIED VALUE. THIS CAN CAUSE DAMAGE TO THE FLANGE SURFACES.
(1) Preparation for installation: (a) Clean and do an inspection of the fan and APU interfaces for damage.
(b) Do a visual inspection of the cooling-fan shaft gear-teeth for wear or missing teeth.
(c) Do an inspection of the internal gear-teeth through the gearbox hole, for wear or missing teeth.
(d) Clean and do an inspection of the ducts and clamps for damage and replace as necessary.
(e) Lubricate the new AIPC 49-52-04-50-160 PACKING (14) or AIPC 49-52-84-20-140 PACKING (14) and the new AIPC 49-52-04-50-150 PACKING (13) or AIPC 49-52-84-20-130 PACKING (13) with Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(2) Install the PMG and cooling fan assembly (compartment cooling valve installed - On APUs with the Mod 6 Dot on the modification plate).
(a) Install the new packing (14) on the cooling fan (12).
(b) Install the new packing (13) on the fan buffer-air transfer-tube.
(c) Put the clamp (15) in position on the gearbox flange (16).
(d) Align the locating pin (17) with the key-hole and install the fan (12) with the clamp (15).
(e) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
. (f) Lightly tap the clamp (15) with a MALLET - WOODEN to make sure that the clamp is correctly installed.
(g) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
again. (h) Put the clamp (7) in position and attach the duct (6) to the fan (12).
(i) TORQUE the clamp (7) to between 18.9 and 18 lbf.in (0.21 and 0.20 m.daN )
. (j) Put the clamp (4) in position on the duct (5) and put the cooling valve (3) into the duct (5).
(k) Install the cooling valve (3) on the fan (12) with the bolts (9).
(l) Attach the tube (11) to the cooling fan union.
(m) TORQUE the bolts (9) to between 42 and 40 lbf.in (0.47 and 0.45 m.daN )
. (n) TORQUE the clamp (4) to between 16 and 10 lbf.in (0.18 and 0.11 m.daN )
. (o) TORQUE the tube (11) to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )
. (p) Install the duct (1) with the clamps (2) and (10).
(q) TORQUE the clamps (2) and (10) to between 13.65 and 13 lbf.in (0.154 and 0.147 m.daN )
. (r) Make sure that all the electrical connections are clean and in the correct condition.
(s) Install the electrical connector (8).
(3) Install the PMG and cooling fan assembly (compartment cooling valve not installed and the cooling valve duct installed - On APUs with the Mod 6 Dot deleted on the modification plate).
(a) Install the new packing (14) on the cooling fan (12).
(b) Install the new packing (13) on the fan buffer-air transfer-tube.
(c) Put the clamp (15) in position on the gearbox flange (16).
(d) Align the locating pin (17) with the key-hole and install the fan (12) with the clamp (15).
(e) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
. (f) Lightly tap the clamp (15) with a MALLET - WOODEN to make sure that the clamp is correctly installed.
(g) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
again. (h) Put the clamp (7) in position and attach the duct (6) to the fan (12).
(i) TORQUE the clamp (7) to between 18.9 and 18 lbf.in (0.21 and 0.20 m.daN )
. (j) Put the clamp (4) in position on the duct (5) and put the cooling duct (18) on the duct (5).
(k) Safety the cooling duct (18) on the fan (12) with the bolts (19).
(l) TORQUE the bolts (19) to between 56 and 51 lbf.in (0.63 and 0.58 m.daN )
. (m) TORQUE the clamp (4) to between 16 and 10 lbf.in (0.18 and 0.11 m.daN )
. (n) Install the duct (1) with the clamps (2) and (10).
(o) TORQUE the clamps (2) and (10) to between 13.65 and 13 lbf.in (0.154 and 0.147 m.daN )
. (p) Make sure that all the electrical connections are clean and in the correct condition.
(q) Install the electrical connector (8).
(4) Install the PMG and cooling fan assembly (compartment cooling valve and cooling valve duct not installed).
(a) Install the new packing (14) on the cooling fan (12).
(b) Install the new packing (13) on the fan buffer-air transfer-tube.
(c) Put the clamp (15) in position on the gearbox flange (16).
(d) Align the locating pin (17) with the key-hole and install the fan (12) with the clamp (15).
(e) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
. (f) Lightly tap the clamp (15) with a MALLET - WOODEN to make sure that the clamp is correctly installed.
(g) TORQUE the clamp (15) to between 33.6 and 32 lbf.in (0.38 and 0.36 m.daN )
again. (h) Put the clamp (7) in position and attach the duct (6) to the fan (12).
(i) TORQUE the clamp (7) to between 18.9 and 18 lbf.in (0.21 and 0.20 m.daN )
. (j) Install the duct (1) with the clamps (2) and (10).
(k) TORQUE the clamps (2) and (10) to between 13.65 and 13 lbf.in (0.154 and 0.147 m.daN )
. (l) Make sure that all the electrical connections are clean and in the correct condition.
(m) Install the electrical connector (8).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 49-52-53-710-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
C. Functional and Leak Test.
(1) Do a functional test of the APU and make sure that the APU operates within the oil temperature limits (Ref. AMM TASK 49-00-00-710-008).
(2) Examine the cooling fan for oil leaks.
5. Close-up(1) Do a functional test of the APU and make sure that the APU operates within the oil temperature limits (Ref. AMM TASK 49-00-00-710-008).
(2) Examine the cooling fan for oil leaks.
NOTE: No leaks are permitted.
Subtask 49-52-53-410-050-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) Set the LIGHT control switch 11LJ to the off position.
(3) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
Subtask 49-52-53-860-051-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the LIGHT control switch 11LJ to the off position.
(3) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
B. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).