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TURBINE FRAME ASSEMBLY - CLEANING/PAINTING
__________________________________________ TASK 72-56-00-100-001 Cleaning of the Oil Inlet Cover
1. Reason for the Job
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Use this procedure to clean the oil inlet cover.
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
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No specific warning notice
B. Referenced Information
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72-56-00-000-002 Removal of the Oil Inlet Cover Assembly 72-56-00-400-002 Installation of the Oil Inlet Cover Assembly SPM 70-21-11 SPM 70-21-12 SPM 70-21-31 72-56-00-991-303 Fig. 701
3. Job Set-up
__________ Subtask 72-56-00-941-054
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice 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.
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(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 to tell persons not to energize the FADEC 1(2).
Subtask 72-56-00-010-057
B. Remove the oil inlet cover (Ref. TASK 72-56-00-000-002).
4. Procedure
_________ (Ref. Fig. 701/TASK 72-56-00-991-303) Subtask 72-56-00-110-050
A. Degreasing of the Oil Inlet Cover
(1) Solvent degreasing (alternative procedure available)
- refer to CFMI SPM (Ref. SPM 70-21-11), Solvent Degreasing of all materials, except Titanium Alloys.
(2) Vapor degreasing (alternative procedure)
- refer to CFMI SPM (Ref. SPM 70-21-12), Vapor Degreasing. NOTE : Use one of these procedures to remove oil and grease from the
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oil inlet cover.
Subtask 72-56-00-130-050
B. Cleaning of the Oil Inlet Cover
- refer to CFMI SPM (Ref. SPM 70-21-31), Descalling ferrous alloys. Subtask 72-56-00-210-052
C. Inspection of the Oil Nozzle
(1) Make sure that the oil nozzle is clean and clear of unwanted material.
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Cleaning of the Oil Inlet Cover
Figure 701/TASK 72-56-00-991-303
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________ Subtask 72-56-00-410-058
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Install the oil inlet cover (Ref. TASK 72-56-00-400-002).
(3) Remove the warning notice(s).
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TASK 72-56-00-100-002
Cleaning of the Aft Sump Oil Supply Tube
1. Reason for the Job
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Use this procedure to clean the aft sump oil supply tube where it goes through the No. 10 turbine frame strut, when you suspect signs of cocking in this oil supply tube, after an air flow check of the aft sump oil supply circuit.
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific warning notice
B. Referenced Information
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REFERENCE DESIGNATION
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72-56-00-000-002 Removal of the Oil Inlet Cover Assembly
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