4. Procedure
_________ Subtask 49-52-53-020-050
A. Removal of the PMG and Cooling Fan Assembly.
(Ref. Fig. 401/TASK 49-52-53-991-003)
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.
(1)
Removal of the PMG and Cooling Fan Assembly (Compartment Cooling Valve Installed - On Apu's with the Mod 6 Dot on the Modification Plate intact).
(a)
Disconnect the electrical connector P28 (8) from the cooling fan (12).
(b)
Put blanking caps on the disconnected electrical connectors.
(c)
Disconnect the tube (11) from the cooling valve (3).
(d)
Disconnect the clamp (4) from the cooling valve duct (5).
(e)
Remove the two bolts (9) and remove the cooling valve (3).
(f)
Disconnect the clamps (2) and (10) and remove the fan inlet duct (1).
(g)
Disconnect the clamp (7) from the fan outlet duct (6).
(h)
Disconnect the clamp (15) and remove the cooling fan (12).
(i)
Remove the packings (13) and (14).
(j)
Discard the packing (13).
(k)
Discard the packing (14).
(l)
Put blanking plugs on the disconnected line ends.
(2)
Removal of the PMG and Cooling Fan Assembly (Compartment Cooling Valve not Installed - On Apu's with the Mod 6 Dot scored out on the Modification Plate).
(a)
Disconnect the electrical connector P28 (8) from the cooling fan (12). Put blanking caps on the disconnected electrical connectors.
(b)
Disconnect the clamp (4) from the cooling valve duct (5).
(c)
Remove the two bolts (9) and remove the cooling duct (3).
(d)
Disconnect the clamps (2) and (10) and remove the fan inlet duct (1).
(e)
Disconnect the clamp (7) from the fan outlet duct (6).
(f)
Disconnect the clamp (15) and remove the cooling fan (12).
(g)
Remove and discard the packings (13) and (14).
(h)
Put blanking plugs on the disconnected line ends.
PMG and Cooling Fan Figure 401/TASK 49-52-53-991-003- 12 (SHEET 1)
R EFF : 106-106, 108-149, 211-299, 301-399, 49-52-53 Page 404 Aug 01/05
CES
PMG and Cooling Fan Figure 401/TASK 49-52-53-991-003- 22 (SHEET 2)
R EFF : 106-106, 108-149, 211-299, 301-399, 49-52-53 Page 405 Aug 01/05
CES
TASK 49-52-53-400-001 Installation of the PMG and Cooling Fan Assembly (8055KM) (APS 3200) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific soft hammer No specific Torque Wrench : range 5.00 to 35.00 lbf.in
(0.05
to 0.40 m.daN) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
B.
Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 03-002 GB DEF-STAN 91-101 LUBRICATING OIL TURBINE ENGINE SYNT BASE (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 49-00-00-710-008 Operational Test of the APU (APS 3200) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-52-53-991-003 Fig. 401
3. Job Set-up
__________
Subtask 49-52-53-860-050
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