DMC:V2500-A0-72-41-1101-00A-300A-C|Issue No:005|Issue Date:2019-05-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

V2500-A1

Common Information

TASK 72-41-11-200-001-A00 HPC Stage 3 - 8 Drum Disk - Examine, Inspection-001

Effectivity

FIG/ITEM	PART NO.	SERVICE BULLETIN
01-200	6A3508	PRE SBE 72-0035
01-200	6A3648	PRE SBE 72-0035
01-200	6A3934	SBE 72-0035
01-200	6A3936	SBE 72-0035
01-200	6A4189	SBE 72-0130
01-200	6A5467	SBE 72-0178
01-200	6A5592	SBE 72-0161
01-200	6A5594	SBE 72-0161
01-200	6A5659	SBE 72-0161
01-200	6A6473	SBE 72-0254
01-200	6A7379	SBE 72-0304
01-200	6A7380	SBE 72-0304
01-200	6A7382	SBE 72-0304
01-200	6A7384	SBE 72-0304
01-200	6A7385	SBE 72-0304
01-200	6A7401	SBE 72-0300
01-200	6A8236	SBE 72-0450
01-200	6A8318	SBE 72-0470
01-200	6A8350	SBE 72-0476
01-200	6B1379	SBE 72-0606
01-200	6B1380	SBE 72-0606
01-200	6B1381	SBE 72-0606
01-200	6B1382	SBE 72-0606
01-200	6B1383	SBE 72-0606
01-200	6B1384	SBE 72-0606
01-200	6B1401	SBE 72-0606
01-200	6B1402	SBE 72-0606
01-200	6B1403	SBE 72-0606
01-200	6B1406	SBE 72-0606

General

This TASK gives the procedure to examine the stages 3 to 8 HP compressor discs. For other parts of the stages 3 to 8 HP compressor discs refer to TASK 72-41-11-200-000 (INSPECTION/CHECK-000).

The policy that is necessary for inspection is given in SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined.

All parts must be visually examined for damage, corrosion and wear. All defects that are not identified in this procedure must be referred to IAE.

The procedure for those parts which must have a crack test is given in Step. Do the test before the part is visually examined.

Do not discard any part until you are sure that there are no repairs available. Refer to the instructions in the repair before a discarded part is used again or over size parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part could be shown to be necessary at a later date.

All parts must be examined to make sure that all the repairs have been completed satisfactorily.

The practices and processes referred to in the procedure by the TASK/SUBTASK numbers are in SPM.

All of the temporary marks made in this procedure must be removed before the component is assembled.

HP compressor stages 3 to 8 drum cleaning procedure:

For all standards of drum, an aqueous cleaning method can be used as necessary, but a nitric acid solution chemical cleaning process is mandatory to clean and remove the potential remaining silver from drums that have operated with any standard of silver coated nut in the stage 8 cavity.

Polythene or cotton gloves must be must be worn to prevent surface contamination from handling after cleaning process.

References

Refer to SPM for data on these items:

Definition of Damage, SPM TASK 70-02-02-350-501,

Record and Control of the Component Lives, SPM TASK 70-05-00-220-501,

Inspection of parts, SPM TASK 70-20-01-200-501.

Some data on these items is contained in this TASK. For more data on these items refer to SPM:

Method of Testing for Crack Indications.

Chemical Processes.

Surface Protection.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

If the removal of stage 6 and 7 vane path liners by nitric acid method is necessary, then the liner removal and drum cleaning processes must be combined to prevent unnecessary use of nitric acid cleaning process.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

Name	Manufacturer	Part Number / Identification	Remark
Gloves	LOCAL		Polythene or cotton
IAE 2R19883 Rotary table inspection device	0AM53	IAE 2R19883
IAE 2R19884 Adapter	0AM53	IAE 2R19884

Consumables, Materials and Expendables

Name	Manufacturer	Part Number / Identification
CoMat 02-001 ADHESIVE TAPE (MASKING)	LOCAL	CoMat 02-001
CoMat 02-005 ADHESIVE TAPE (MASKING)	LOCAL	CoMat 02-005
CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE	LOCAL	CoMat 05-001
CoMat 06-030 NON AQUEOUS DEVELOPER	LOCAL	CoMat 06-030

Spares

NONE

Safety Requirements

CAUTION

THE WORD FOCUS, SPECIFIED IN SUBTASK TITLES, INDICATES CRITICAL LOCATIONS ON COMPONENTS TO WHICH SPECIAL ATTENTION MUST BE GIVEN.

Procedure

1. 1. Drill to remove shank nuts.
    Repair, VRS6220 TASK 72-41-11-300-011 (REPAIR-011), SUBTASK 72-41-11-323-051
  2. CAUTION
    IF THE PART IS PROCESSED WITHOUT A MASK, THE COATING MUST BE REPLACED.
    NOTE
    Step gives the procedure to replace the removed shank nuts.
    Mask all metal sprayed or other plated coatings.
    Refer to SPM TASK 70-11-35-110-501.
2. 1. Make sure that all fluid traps and internal cavities are dry. Drain with a syphon tube as necessary.
3. 1. Visually examine using white light source and mirror.
    If the part is clean.
    Continue with Step.
    If there is oxidation scale or mineral deposits.
    Do the Step chemical cleaning process again, one time only.
    If oxidation scale or mineral deposits cannot be removed in Step.
    Quarantine the part and contact IAE Technical Services.
1. Refer to Figure, Figure, Figure, Figure, Figure, Figure, Figure, Figure, Figure and Figure.
2. 1. Pitted.
    Reject.
    NOTE
    Optimum emulsification time is to be found by trial. It is recommended to use water filled stop bath to end the emulsification process. Refer to SPM TASK 70-23-04-230-501, SUBTASK 70-23-04-230-003. Do a water wash and use a suction hose to remove pooled liquid from cavities.
    After wash and drying operation, apply CoMat 02-005 ADHESIVE TAPE (MASKING) to the remaining ceramic liners.The mask will prevent glare during inspection, from fluorescent penetrant which soaks into the ceramic.
    Use high intensity Ultra Violet (UV) light source with correct UV light guide to illuminate the inner cavities and examine with mirror or borescope. If it is difficult to apply sufficient dry powder developer in the inner cavities, then apply CoMat 06-030 NON AQUEOUS DEVELOPER to get the necessary inner surface coverage. Use IAE 2R19883 Rotary table inspection device and IAE 2R19884 Adapter drum, to rotate the drum and to get the necessary wet surfaces in the inner cavity (NMSB 72-0637).
3. 1. NOTE
    Use IAE 2R19883 Rotary table inspection device and IAE 2R19884 Adapter or equivalent inspection equipment for fluorescent penetrant inspection of internal surfaces (NMSB 72-0637). Refer to Figure.
    Do an overall crack inspection of HP compressor stages 3 to 8 drum.
    Cracked.
    Reject.
1. Inspect according to TASK 72-41-11-230-002, Subtask 72-41-11-230-104.
1. 1. General nicks, dents, scratches and scores not more than 0.002 in. (0.05 mm).
    Accept.
  2. More than Step.
    Reject.
2. 1. Inner cavity weld spatter.
    Accept.
1. Refer to Figure.
2. 1. Within the limits of VRS6006.
    Repair, VRS6006 TASK 72-41-11-300-001 (REPAIR-001).
  2. More than in Step.
    Reject.
1. Refer to Figure and Figure.
2. 1. Repair, VRS6132 TASK 72-41-11-300-008 (REPAIR-008).
3. 1. Worn
    If the bore of the sealing sleeve, (dimension A), is between 6.299 in. and 6.304 in. (159.99 mm and 160.12 mm).
    Accept.
    More than 6.304 in. (160.12 mm).
    Reject.
  2. Damaged.
    Lining that is not there.
    Reject.
1. Refer to Figure.
2. 1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
1. Examine the stage 3 diaphragm bore at Location 5A and the diaphragm surface at Location 6A. Refer to Figure.
  Examine the stage 4 diaphragm bore at Location 5B and the diaphragm surface at Location 6B. Refer to Figure.
  Examine the stage 5 diaphragm bore at Location 5C and the diaphragm surface at Location 6C. Refer to Figure.
  Examine the stage 6 diaphragm bore at Location 5D and the diaphragm surface at Location 6D. Refer to Figure.
  Examine the stage 7 diaphragm bore at Location 5E and the diaphragm surface at Location 6E. Refer to Figure.
  Examine the stage 8 diaphragm bore at Location 5F and the diaphragm surface at Location 6F. Refer to Figure.
2. 1. Nicked, dented, scratched or scored.
    Repair, VRS6149 TASK 72-41-11-300-012 (REPAIR-012).
3. 1. Nicked, dented, scratched or scored.
    Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

SUBTASK 72-41-11-220-057 Examine the Stage 3, 4 and 5 HP Compressor Discs Dovetail Slots

Examine the stage 3 slots at Location 7A. Refer to Figure.
Examine the stage 4 slots at Location 7B. Refer to Figure.

Examine the slots at Zone A.

Zone A	-	Dovetail slot bedding area plus 0.050 in. (1.27 mm) below the bottom limit and the complete length of the slot on both sides. Refer to Figure, Figure, Figure and Figure.
NOTE All discs that have been used in service will have bedding areas that are easy to see.

1. 1. Accept.
2. 1. Accept.
3. 1. Refer to Repair, VRS6300 TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300 TASK 72-41-11-300-026 (REPAIR-026).
4. 1. Reject.

Examine the slots at Zone B.

Zone B

The area of the dovetail slot below zone A and the complete length of the slot and the area on the front and rear faces of the neck of the slot. The front and rear neck area is shown as the area which extends a given dimension constantly from the dovetail slots and an area below the dovetail slots which extends, constantly, circumferentially around all of the disc. Refer to Figure, Figure, Figure and Figure.

1. 1. Refer to Repair, VRS6300 TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300 TASK 72-41-11-300-026 (REPAIR-026).
2. 1. Reject.
1. 1. Refer to Repair, VRS6300 TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300 TASK 72-41-11-300-026 (REPAIR-026).
2. 1. Reject.

1. 1. Not more than 0.020 in. (0.508 mm) in depth.
    Refer to Repair, VRS6300 TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300 TASK 72-41-11-300-026 (REPAIR-026).
  2. More than Step.
    Reject.
2. 1. Not more than 0.020 in (0.508 mm) in depth.
    Refer to Repair, VRS6300 TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300 TASK 72-41-11-300-026 (REPAIR-026).
  2. More than Step.
    Reject.

1. 1. Examine the stage 4 grooves at Location 1013. Refer to Figure.
  2. Examine the stage 5 grooves at Location 1015. Refer to Figure.
2. 1. In the limits of VRS6630.
    Repair, VRS6630 TASK 72-41-11-300-023 (REPAIR-023).
  2. More than Step.
    Reject.
3. 1. If the width of each groove is between 0.0945 in. and 0.0968 in. (2.40 mm and 2.46 mm).
    Accept.
  2. If the width of each groove is more than 0.0968 in. (2.46 mm).
    Reject.
1. NOTE
  If the seal fins are accepted, write down the value of the diameters of the seal fins, at each location. These values are used during assembly, (72-41-00).
  Examine the stage 3 seal fins at Location 1001. Refer to Figure.
2. Examine the stage 4 seal fins at Locations 1002 and 1003. Refer to Figure.
3. Examine the stage 5 seal fins at Location 1004. Refer to Figure.
4. 1. In the limits of VRS6048.
    Repair, VRS6048 TASK 72-41-11-300-004 (REPAIR-004).
  2. More than Step but in limits of VRS6122
    Repair, VRS6122 TASK 72-41-11-300-013 (REPAIR-013).
  3. More than Step.
    Reject.
5. 1. Location 1001.
    Refer to the values written in TASK 72-41-10-040-001-A00 (DISASSEMBLY, CONFIG-001).
    If the value is between 10.308 in. and 10.331 in. (261.81 mm and 262.40 mm).
    Accept.
    If the value is less than 10.308 in. (261.81 mm).
    Reject.
  2. Location 1002.
    Refer to the values written in TASK 72-41-10-040-001-A00 (DISASSEMBLY, CONFIG-001).
    If the value is between 11.851 in. and 11.874 in. (301.02 mm and 301.60 mm).
    Accept.
    If the value is less than 11.851 in. (301.02 mm).
    Reject.
  3. Location 1003.
    Refer to the values written in TASK 72-41-10-040-001-A00 (DISASSEMBLY, CONFIG-001).
    If the value is between 12.229 in. and 12.252 in. (310.62 mm and 311.20 mm).
    Accept.
    If the value is less than 12.229 in. (310.62 mm).
    Reject.
  4. Location 1004.
    Refer to the values written in TASK 72-41-10-040-001-A00 (DISASSEMBLY, CONFIG-001).
    If the value is between 13.855 in. and 13.878 in. (351.92 mm and 352.50 mm).
    Accept.
    If the value is less than 13.855 in. (351.92 mm).
    Reject.
1. Examine the stage 6 linings at Location 1056. Refer to Figure.
2. Examine the stage 7 linings at Location 1057. Refer to Figure.
3. 1. Location 1056.
    Refer to the values written in TASK 72-41-10-040-001-A00 (DISASSEMBLY, CONFIG-001).
    If the value is more than 8.600 in. (218.44 mm).
    Accept.
    If the value is less than 8.600 in. (218.44 mm).
    Repair, VRS6007, TASK 72-41-11-300-002 (REPAIR-002).
  2. Location 1057.
    Refer to the values written in TASK 72-41-10-040-001-A00 (DISASSEMBLY, CONFIG-001).
    If the value is more than 8.9340 in. (226.924 mm).
    Accept.
    If the value is less than 8.9340 in. (226.924 mm).
    Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).
4. 1. Missing.
    Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).
  2. Grooved.
    Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).
  3. Rubtrack.
    Light smearing of coating that is not more than 0.002 in. (0.05 mm) in depth.
    Accept.
    Other than Step
    Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).
  4. Chipped.
    Not more than 10 percent of the total width, a total of 25 percent of the circumference, 0.0040 in. (0.102 mm) in depth along both edges.
    Accept.
    Other than Step
    Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).
1. Examine the stage 6 disc at Locations 1016, 1017, 1018, 1019, 1020 and 1021. Refer to Figure.
2. Examine the stage 7 disc at Locations 1022, 1025, 1266 and 1267. Refer to Figure.
3. Examine the stage 8 disc at Locations 1268 and 1269. Refer to Figure.
4. 1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
5. 1. Stage 6 seal grooves at Locations 1017 and 1020.
    Width of the groove over the whole circumference is between 0.073 in. and 0.078 in. (1.86 mm and 1.98 mm).
    Accept.
    In the limits of VRS6626.
    Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).
    More than Step and Step.
    Reject.
  2. Stage 7 seal grooves at Locations 1266 and 1267.
    Width of the groove over the whole circumference is between 0.073 in. and 0.078 in. (1.86 mm and 1.98 mm).
    Accept.
    In the limits of VRS6626.
    Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).
    More than Step and Step.
    Reject.
  3. Stage 8 seal groove at Locations 1268 and 1269.
    Width of the groove over the whole circumference is between 0.073 in. and 0.078 in. (1.86 mm and 1.98 mm).
    Accept.
    In the limits of VRS6626.
    Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).
    More than Step and Step.
    Reject.
6. 1. Stage 6 seal grooves at Locations 1017 and 1020. Refer to Figure.
    Chips or material loss.
    Reject.
  2. Stage 7 seal grooves at Locations 1266 and 1267. Refer to Figure.
    Chips or material loss.
    Reject.
  3. Stage 8 seal grooves at Locations 1268 and 1269. Refer to Figure.
    Chips or material loss.
    Reject.
1. Examine the stage 6 disc at Locations 1016, 1017, 1018, 1019, 1020 and 1021. Refer to Figure and Figure.
2. Examine the stage 7 disc at Locations 1022, 1025, 1266 and 1267. Refer to Figure and Figure.
3. 1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
4. 1. Stage 6 seal grooves at Locations 1017 and 1020.
    Width of the groove over the whole circumference is between 0.074 in. and 0.078 in. (1.87 mm and 1.97 mm).
    Accept.
    In the limits of VRS6626.
    Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).
    More than Step and Step.
    Reject.
  2. Stage 7 seal grooves at Locations 1266 and 1267.
    Width of the groove over the whole circumference is between 0.042 in. and 0.046 in. (1.06 mm and 1.16 mm).
    Accept.
    In the limits of VRS6626.
    Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).
    More than Step and Step.
    Reject.
  3. Stage 8 seal groove at Location 1268 and 1269.
    Width of the groove over the whole circumference is between 0.042 in. and 0.046 in. (1.06 mm and 1.16 mm).
    Accept.
    In the limits of VRS6626.
    Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).
    More than Step and Step.
    Reject.
5. 1. Stage 6 seal grooves at Locations 1017 and 1020. Refer to Figure and Figure.
    Chips or material loss.
    Reject.
  2. Stage 7 seal grooves at Locations 1266 and 1267. Refer to Figure and Figure.
    Chips or material loss.
    Reject.
  3. Stage 8 seal grooves at Locations 1268 and 1269. Refer to Figure and Figure.
    Chips or material loss.
    Reject.
1. Refer to Figure.
2. 1. Galled/Scored.
    Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
    Worn.
    If the diameter is between 16.1417 in. and 16.1442 in. (410.000 mm and 410.063 mm).
    Accept.
    Write down the dimension of the diameter.
    If the diameter is more than 16.1442 in. (410.063 mm).
    Repair, VRS6154 TASK 72-41-11-300-014 (REPAIR-014).
3. 1. Galled/Scored.
    Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
4. 1. Burred edges.
    Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
  2. Scored.
    Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

SUBTASK 72-41-11-220-067 Examine the Stage 6, 7 and 8 HP Compressor Disc Circumferential Dovetail Slots

Examine the stage 6 slots at Location 11A. Refer to Figure.
Examine the stage 7 slots at Location 11B. Refer to Figure.

Examine the slots at zone A. Refer to Figure.

Zone A	-	Dovetail slot bedding area plus 0.050 in. (1.27 mm) below the bottom limit and the complete length of the slot on both sides.
NOTE All discs that have been used in service will have bedding areas that are easy to see.

1. 1. Accept.
2. 1. Accept.
3. 1. Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).
4. 1. Reject.

1. 1. Not more than 0.002 in. (0.05 mm) in depth.
    Accept.
  2. More than Step.
    Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).
2. Scored/Nicked.
3. 1. Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).
4. 1. Reject.
1. 1. Not more than 0.002 in. (0.05 mm) in depth.
    Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).
  2. More than Step.
    Reject.
2. 1. Not more than 0.001 in. (0.025 mm) in depth.
    Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).
  2. More than Step.
    Reject.
1. 1. Not more than 0.001 in. (0.025 mm).
    Accept.
  2. More than Step.
    Reject.
1. 1. Not more than 0.005 in. (0.127 mm).
    Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).
  2. More than Step.
    Reject.

1. Refer to Figure.
2. 1. Repair, VRS6220 TASK 72-41-11-300-011 (REPAIR-011).
1. 1. Repair, VRS6487 TASK 72-41-11-300-017 (REPAIR-017).

Stage 3 HP Compressor Disc - Inspection Locations

Stage 4 HP Compressor Disc - Inspection Locations

Stage 5 HP Compressor Disc - Inspection Locations

Stage 6 HP Compressor Disc - Inspection Locations

Stage 7 HP Compressor Disc - Inspection Locations

Stage 8 HP Compressor Disc - Inspection Locations

Focused Inspection - HP Compressor Stage 6 Seal Grooves

Focused Inspection - HP Compressor Stage 7 Seal Grooves

Focused Inspection - HP Compressor Stage 8 Seal Grooves and Inner Cavity

Focused Inspection - Stages 3-8 Discs Bores

Stages 3, 4 and 5 Axial Dovetail Slot Inspection Zones

HP Compressor Stage 3 Axial Dovetail Slot Inspection Zones

HP Compressor Stage 4 Axial Dovetail Slot Inspection Zones

HP Compressor Stages 5 Axial Dovetail Slot Inspection Zones

Stage 6, 7 and 8 HP Compressor Disc Circumferential Dovetail Slot Zones

Examine the Sealing Groove

HP Compressor Stages 3 to 8 Drum Inspection Equipment for the Fluorescent Penetrant Inspection of Internal Surfaces

Requirements After Job Completion

Follow-On Conditions

NONE

Manufacturer Code:	0AM53
Enterprise Name:	IAE INTERNATIONAL AERO ENGINES AG
BU Name:	NULL
Building:	SUITE 400
Street:	628 HEBRON AVENUE
City:	GLASTONBURY
State:	CT
Zip Code:	06033
Country:	USA

Manufacturer Code:	LOCAL
Enterprise Name:	LOCALLY SUPPLIED

Manufacturer Code:	0AM53
Tool Number:	IAE 2R19883
Tool Name:	IAE 2R19883 Rotary table inspection device

TASK 72-41-11-200-001-A00 HPC Stage 3 - 8 Drum Disk - Examine, Inspection-001

Export Control

Copyright

Applicability

Common Information

TASK 72-41-11-200-001-A00 HPC Stage 3 - 8 Drum Disk - Examine, Inspection-001

Effectivity

General

References

NOTE

NOTE

Preliminary Requirements

Pre-Conditions

Support Equipment

Consumables, Materials and Expendables

Spares

Safety Requirements

CAUTION

Procedure

SUBTASK 72-41-11-110-136 Clean the HP Compressor Discs

CAUTION

CAUTION

NOTE

NOTE

NOTE

SUBTASK 72-41-11-230-118 Do a General Inspection on Stages 3 to 8 HP Compressor Discs for Cracks

CAUTION

NOTE

NOTE

NOTE

NOTE

SUBTASK 72-41-11-230-119 Focus Inspection on Stages 3 to 8 HP Compressor Discs for Cracks

SUBTASK 72-41-11-220-051 Examine the Stages 3 to 8 HP Compressor Discs for Damage

NOTE

SUBTASK 72-41-11-220-052 Examine the Curvic Teeth at Location 1

SUBTASK 72-41-11-220-053 Examine the Curvic Coupling Sealing Sleeve at Location 2

SUBTASK 72-41-11-220-055 Examine the Curvic Coupling Location Holes at Location 4

SUBTASK 72-41-11-220-056 Examine the Stages 3 to 8 HP Compressor Discs Diaphragms

SUBTASK 72-41-11-220-057 Examine the Stage 3, 4 and 5 HP Compressor Discs Dovetail Slots

NOTE

SUBTASK 72-41-11-220-058 Examine the Stages 3, 4 and 5 HP Compressor Discs Grooves

SUBTASK 72-41-11-220-059 Examine the Stages 3, 4 and 5 HP Compressor Discs Seal Fins

NOTE

SUBTASK 72-41-11-220-061 Examine the Stages 6 and 7 HP Compressor Discs Linings

SUBTASK 72-41-11-220-062-A00 Examine the Stages 6, 7 and 8 HP Compressor Discs Circumferential Grooves (SBE 72-0300, SBE 72-0450, SBE 72-0470, SBE 72-0476 and SBE 72-0606)

NOTE

NOTE

SUBTASK 72-41-11-220-062-B00 Examine the Stages 6, 7 and 8 HP Compressor Discs Circumferential Grooves (Pre SBE 72-0035, SBE 72-0035, SBE 72-0130, SBE 72-0161, SBE 72-0178, SBE 72-0254, SBE 72-0304 and SBE 72-0606)

NOTE

NOTE

SUBTASK 72-41-11-220-063 Examine the Rear of the Stage 8 HP Compressor Disc

SUBTASK 72-41-11-220-067 Examine the Stage 6, 7 and 8 HP Compressor Disc Circumferential Dovetail Slots

NOTE

SUBTASK 72-41-11-350-106 Replace the Curvic Coupling Shank Nuts at Location 3

SUBTASK 72-41-11-380-071 Apply the Dry Film Lubricant

Figure: Stage 3 HP Compressor Disc - Inspection Locations

Stage 3 HP Compressor Disc - Inspection Locations

Figure: Stage 4 HP Compressor Disc - Inspection Locations

Stage 4 HP Compressor Disc - Inspection Locations

Figure: Stage 5 HP Compressor Disc - Inspection Locations

Stage 5 HP Compressor Disc - Inspection Locations

Figure: Stage 6 HP Compressor Disc - Inspection Locations

Stage 6 HP Compressor Disc - Inspection Locations

Figure: Stage 7 HP Compressor Disc - Inspection Locations

Stage 7 HP Compressor Disc - Inspection Locations

Figure: Stage 8 HP Compressor Disc - Inspection Locations

Stage 8 HP Compressor Disc - Inspection Locations

Figure: Focused Inspection - HP Compressor Stage 6 Seal Grooves

Focused Inspection - HP Compressor Stage 6 Seal Grooves

Figure: Focused Inspection - HP Compressor Stage 7 Seal Grooves

Focused Inspection - HP Compressor Stage 7 Seal Grooves

Figure: Focused Inspection - HP Compressor Stage 8 Seal Grooves and Inner Cavity

Focused Inspection - HP Compressor Stage 8 Seal Grooves and Inner Cavity

Figure: Focused Inspection - Stages 3-8 Discs Bores

Focused Inspection - Stages 3-8 Discs Bores

Figure: Stages 3, 4 and 5 Axial Dovetail Slot Inspection Zones

Stages 3, 4 and 5 Axial Dovetail Slot Inspection Zones

Figure: HP Compressor Stage 3 Axial Dovetail Slot Inspection Zones

HP Compressor Stage 3 Axial Dovetail Slot Inspection Zones

Figure: HP Compressor Stage 4 Axial Dovetail Slot Inspection Zones