DMC:V2500-A0-72-41-2000-01B-710A-B|Issue No:003|Issue Date:2020-02-01

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

All

Common Information

TASK 72-41-20-440-001-A00 HPC Rear Cases And Vanes Assembly - Assemble The HPC Stage 7 Case And Stator Vanes, Assembly-001

General

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.

For all parts identified in a different Chapter/Section/Subject the applicable Chapter/Section/Subject comes before the Fig/item number.

For standard torque data and procedures refer to TASK 70-41-00-400-501, TASK 70-41-01-400-501 and TASK 70-41-02-410-501.

Special torque data and assembly tolerances are included in the procedure.

Lubricate all threads and abutment faces of nuts and bolts with CoMat 10-077 APPROVED ENGINE OILS unless other lubricants are referred to in the procedure.

After assembly apply CoMat 07-038 AIR DRYING ENAMEL to any damaged surface protection, joint flanges and parts used to attach. Use the correct color of the air drying enamel. Refer to TASK 70-63-02-380-501.

The number for each radial location must be identified in a clockwise direction. These start at the engine top position when you look from the rear of the engine, unless stated differently in the procedure.

Refer to Figure for a sectional view of the HP compressor rear cases and vanes.

Make sure all the flange faces and tool faces that touch are very clean.

The Fits and Clearances, NEW PART DIMENSIONS AND REJECT IF MORE THAN columns will be used by most operators. This permits the full use of the maximum wear allowance and a reduction in the number of parts which are rejected, is possible.

The column WORN PART DIMENSIONS (Non-select) is included for operators who want to have full interchangeability. If this column is used an increase in the number of parts which are rejected is possible.

After the part has been in service for some time the REJECT IF MORE THAN and WORN PART DIMENSIONS could be changed. The operator must tell IAE and if agreed the manual will be changed.

The abbreviation Intf shows an interference or tight fit. This causes REJECT IF MORE THAN to become REJECT IF LESS THAN.

The abbreviation clear shows a clearance fit.

This TASK gives the procedure to assemble the HP compressor stage 7 case, the vanes, the liners and the stator vane stops. The subsequent TASKS give the procedures to assemble the remaining HP compressor rear cases and stator vanes.

Assemble the HP Compressor Stage 8 Case and Stator Vanes by TASK 72-41-20-440-002-A00 (ASSEMBLY-002).

Assemble the HP Compressor Stage 9 Case and Stator Vanes by TASK 72-41-20-440-003-A00 (ASSEMBLY-003).

Assemble the HP Compressor Stage 10 Case and Stator Vanes by TASK 72-41-20-440-004-A00 (ASSEMBLY-004).

Assemble the HP Compressor Stage 11 Case and Stator Vanes by TASK 72-41-20-440-005-A00 (ASSEMBLY-005).

Machine the Stator Vane Tips and the Rotor Path Ring Liners by TASK 72-41-20-440-006-A01 (ASSEMBLY-006).

Disassemble the HP Compressor Rear Cases and Vanes by TASK 72-41-20-440-007-A01 (ASSEMBLY-007).

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

Name	Manufacturer	Part Number / Identification	Quantity
Heating blanket	LOCAL	Heating blanket
Protective Gloves	LOCAL	Protective gloves
IAE 1R18207 Support stand	0AM53	IAE 1R18207	1
IAE 1R18297 Assembly tool	0AM53	IAE 1R18297	1
IAE 1R18298 Installation drift	0AM53	IAE 1R18298	1
IAE 1R18299 Assembly tool	0AM53	IAE 1R18299	1
IAE 1R18501 Stop alignment tool	0AM53	IAE 1R18501	1
IAE 1R18684 Case extractor	0AM53	IAE 1R18684	1
IAE 1R18434 Case extractor	0AM53	IAE 1R18434	3

Consumables, Materials and Expendables

Name	Manufacturer	Part Number / Identification	Quantity	Remark
CoMat 07-038 AIR DRYING ENAMEL	k3504	CoMat 07-038
CoMat 10-077 APPROVED ENGINE OILS	LOCAL	CoMat 10-077

Spares

Name	Manufacturer	Part Number / Identification	Quantity	Remark
Stage 7 front liner			1
Stage 7 rear liner			1
Stage 8 front liner			1

Safety Requirements

NONE

Procedure

SUBTASK 72-41-20-220-051 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1119

Refer to Figure.

Reference dimensions at location 1119. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 1. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1119
Stage 7 Front Liner HPC Ring Cases And Related Parts (72-41-21, 03-440)
Location In The Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450)
Stage 7 Front Liner Outer Diameter	0.1122
	0.1154	0.0000
Stage 7 Rotor Path Ring Inner (Liner) Diameter	0.1154	0.0051
	0.1173

Table 2. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1119
Stage 7 Front Liner HPC Ring Cases And Related Parts 72-41-21, 03-440)
Location In The Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts 72-41-21, 03-450)
Stage 7 Front Liner Outer Diameter	2.85
	2.93	0.00
Stage 7 Rotor Path Ring Inner (Liner) Diameter	2.93	0.13
	2.98

SUBTASK 72-41-20-220-052 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at location 1121

Refer to Figure.

Reference dimensions at location 1121. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 3. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1121
Stage 7 Rear Liner HPC Ring Cases And Related Parts 72-41-21, 03-490)
Location In The Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts 72-41-21, 03-600)
Stage 7 Rear Liner Outer Diameter	0.1319
	0.1350	0.0000
Stage 8 Rotor Path Ring Inner (Liner) Diameter	0.1350	0.0051
	0.1370

Table 4. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1121
Stage 7 Rear Liner HPC Ring Cases And Related Parts 72-41-21, 03-490)
Location In The Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts 72-41-21, 03-600)
Stage 7 Rear Liner Outer Diameter	3.35
	3.43	0.00
Stage 8 Rotor Path Ring Inner (Liner) Diameter	3.43	0.13
	3.48

SUBTASK 72-41-20-220-053 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1147

Refer to Figure.

Reference dimensions at location 1147. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 5. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1147
Stage 7 Stator Vane Stop HPC Ring Cases And Related Parts (72-41-21, 03-480)
Location In The Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Stage 7 Stator Vane Stop Shank Diameter	0.2474
	0.2494	0.0010
Stage 7 Case Stop Location Bore	0.2504	0.0061
	0.2535

Table 6. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1147
Stage 7 Stator Vane Stop HPC Ring Cases And Related Parts (72-41-21, 03-480)
Location In The Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Stage 7 Stator Vane Stop Shank Diameter	6.285
	6.335	0.025
Stage 7 Case Stop Location Bore	6.360	0.155
	6.440

SUBTASK 72-41-20-220-054 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1100

Refer to Figure.

Reference dimensions at location 1100. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 7. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1100
Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450)
Location In The Front Support Cone HPC Ring Cases And Related Parts (72-41-21, 03-300)
Stage 7 Rotor Path Ring Outer Diameter	22.333
	22.341	0.017
Front Support Cone Inner Flange Bore	22.358	0.03
	22.363

Table 8. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1100
Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450)
Location In The Front Support Cone HPC Ring Cases And Related Parts (72-41-21, 03-300)
Stage 7 Rotor Path Ring Outer Diameter	567.25
	567.45	0.45
Front Support Cone Inner Flange Bore	567.90	0.77
	568.02

SUBTASK 72-41-20-220-055 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1145

Refer to Figure.

Reference dimensions at location 1145. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 9. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1145
Front Support Cone HPC Ring Cases And Related Parts (72-41-21, 03-300)
Location In The Support Cone Stiffening Ring HPC Ring Cases And Related Parts (72-41-21, 03-350)
Front Support Cone Front Flange Diameter	22.550
	22.555	0.007
Support Cone Stiffening Ring Bore	22.5480	0.001
	22.5511

Table 10. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1145
Front Support Cone HPC Ring Cases And Related Parts (72-41-21, 03-300)
Location In The Support Cone Stiffening Ring HPC Ring Cases And Related Parts (72-41-21, 03-350)
Front Support Cone Front Flange Diameter	572.78
	572.9	0.18
Support Cone Stiffening Ring Bore	572.72	0.02
	572.80

SUBTASK 72-41-20-220-056 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1101

Refer to Figure.

Reference dimensions at location 1101. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 11. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1101
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location In The Front Support Cone HPC Ring Cases And Related Parts (72-41-21, 03-300)
Stage 7 Case Outer Diameter	22.361
	22.366	0.008
Front Support Cone Inner Flange Bore	22.358	Intf
	22.363	0.002

Table 12. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1101
Stage 7 case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location In The Front Support Cone HPC Ring Cases And Related Parts (72-41-21, 03-300)
Stage 7 Case Outer Diameter	567.98
	568.1	0.2
Front Support Cone Inner Flange Bore	567.9	Intf
	568.02	0.04

SUBTASK 72-41-20-220-058 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1120

Refer to Figure.

Reference dimensions at location 1120. If required use the data written as a Note in TASK 72-41-22-200-000 (INSPECTION-000) and TASK 72-41-21-200-000 (INSPECTION-000).

Table 13. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1120
Stage 7 Front Liner HPC Ring Cases And Related Parts (72-41-21, 03-440)
Location With The Stage 7 Stator Vanes
Stage 7 Front Liner Outer Width	0.0807
	0.0878	0.0020
Stage 7 Stator Vane Platform Thickness	0.0755	0.0123
	0.0787

Table 14. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1120
Stage 7 Front Liner HPC Ring Cases And Related Parts (72-41-21, 03-440)
Location With The Stage 7 Stator Vanes
Stage 7 Front Liner Outer Width	2.05
	2.23	0.05
Stage 7 Stator Vane Platform Width	1.92	0.31
	2.00

SUBTASK 72-41-20-220-059 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1102

Refer to Figure.

Reference dimensions at location 1102. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 15. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1102
Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-600)
Location In The Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Stage 8 Rotor Path Ring Outer Diameter	22.358
	22.366	0.018
Stage 7 Case Rear Flange Bore	22.384	0.034
	22.392

Table 16. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1102
Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-600)
Location In The Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Stage 8 Rotor Path Ring Outer Diameter	567.90
	568.10	0.4318
Stage 7 Case Rear Flange Bore	568.55	0.8382
	568.75

SUBTASK 72-41-20-220-063 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1122

Refer to Figure.

Reference dimensions at location 1122. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000) and TASK 72-41-22-200-000 (INSPECTION-000).

Table 17. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1122
Stage 7 Rear Liner HPC Ring Cases And Related Parts (72-41-21, 03-490) Location With The Stage 7 Stator Vanes
Stage 7 Rear Liner Outer Width	0.1004
	0.1075	0.0020
Stage 7 Stator Vane Platform Width	0.0952	0.0123
	0.0984

Table 18. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1122
Stage 7 Rear Liner HPC Ring Cases And Related Parts (72-41-21, 03-490) Location With The Stage 7 Stator Vanes
Stage 7 Rear Liner Outer Width	2.55
	2.73	0.05
Stage 7 Stator Vane Platform Width	2.42	0.31
	2.50

SUBTASK 72-41-20-220-064 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1123

Refer to Figure.

Reference dimensions at location 1123. If required use the data written as a Note in TASK 72-41-22-200-000 (INSPECTION-000) and TASK 72-41-21-200-000 (INSPECTION-000).

Table 19. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1123
Stage 7 Rear Liner HPC Ring Cases And Related Parts (72-41-21, 03-490) Axial Clearance With The Stage 7 Stator Vanes
Stage 7 Rear Liner Front Face Dimension	2.4270
	2.4388	0.0116
Stage 7 Stator Vane Platform Rear Face Dimension	2.4504	0.0273
	2.4543

Table 20. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1123
Stage 7 Rear Liner HPC Ring Cases And Related Parts(72-41-21, 03-490)
Axial Clearance With The Stage 7 Stator Vanes
Stage 7 Rear Liner Front Face Dimension	61.645
	61.945	0.295
Stage 7 Stator Vane Platform Rear Face Dimension	62.240	0.695
	62.340

SUBTASK 72-41-20-220-107 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1189

Refer to Figure.

Reference dimensions at location 1189. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 21. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1189
Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-600)
Location With The Stage 7 Case Location Dowel HPC Ring Cases And Related Parts (72-41-21, 03-525)
Stage 8 Rotor Path Ring Location Dowel Hole Bore	0.315
	0.329	0.010
Location Dowel Diameter	0.303	0.026
	0.305

Table 22. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1189
Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-600)
Location With The Stage 7 Case Location Dowel HPC Ring Cases And Related Parts (72-41-21, 03-525)
Stage 8 Rotor Path Ring Location Dowel Hole Bore	8.00
	8.36	0.25
Location Dowel Diameter	7.70	0.66
	7.75

SUBTASK 72-41-20-220-108 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1187

Refer to Figure.

Reference dimensions at location 1187. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 23. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1187
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500) Location With The Front Support Cone Location Dowel (72-41-21, 03-325)
Stage 7 Case Location Dowel Hole Bore	0.315
	0.316	0.010
Location Dowel Diameter	0.303	0.013
	0.305

Table 24. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1187
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location With The Front Support Cone Location Dowel HPC Ring Cases And Related Parts (72-41-21, 03-325)
Stage 7 Case Location Dowel Hole Bore	8.000
	8.022	0.250
Location Dowel Diameter	7.700	0.322
	7.750

SUBTASK 72-41-20-220-109 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1186

Refer to Figure.

Reference dimensions at location 1186. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 25. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1186
Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450) Location With The Front Support Cone Location Dowel (72-41-21, 03-235)
Stage 7 Rotor Path Ring Location Dowel Hole Bore	0.315
	0.329	0.010
Location Dowel Diameter	0.303	0.026
	0.305

Table 26. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1186
Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450)
Location With The Front Support Cone Location Dowel HPC Ring Cases And Related Parts (72-41-21, 03-325)
Stage 7 Rotor Path Ring Location Dowel Hole Bore	8.00
	8.36	0.25
Location Dowel Diameter	7.70	0.66
	7.75

SUBTASK 72-41-20-220-110 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1180

Refer to Figure.

Reference dimensions at location 1180. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 27. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1180
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location On The Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450)
Stage 7 Case Inner Front Bore	21.150	Intf
	21.154	0.003
Stage 7 Rotor Path Ring Rear Flange Diameter	21.1574	0.011
	21.1606

Table 28. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1180
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location On The Stage 7 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-450)
Stage 7 Case Inner Front Bore	537.20	Intf
	537.32	0.08
Stage 7 Rotor Path Ring Rear Flange Diameter	537.40	0.28
	537.48

SUBTASK 72-41-20-220-111 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1179

Refer to Figure.

Reference dimensions at location 1179. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 29. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1179
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location On The Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-600)
Stage 7 Case Inner Rear Bore	21.150	Intf
	21.154	0.003
Stage 8 Rotor Path Ring Front Flange Diameter	21.1574	0.01
	21.1606

Table 30. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1179
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location On The Stage 8 Rotor Path Ring HPC Ring Cases And Related Parts (72-41-21, 03-600)
Stage 7 Case Inner Rear Bore	537.20	Intf
	537.32	0.08
Stage 8 Rotor Path Ring Front Flange Diameter	537.40	0.28
	537.48

SUBTASK 72-41-20-220-112 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at location 1144

Refer to Figure.

Reference dimensions at location 1144. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 31. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1144
Stage 7 Case Front Spacer HPC Ring Cases And Related Parts (72-41-21, 03-513)
Location In The Stage 7 Front Heatshield HPC Ring Cases And Related Parts (72-41-21, 03-180)
Spacer Rear Outer Diameter	0.3161
	0.3164	0.0005
Stage 7 Front Heatshield Location Holes Bore	0.3169	0.0031
	0.3192

Table 32. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1144
Stage 7 Case Front Spacer HPC Ring Cases And Related Parts (72-41-21, 03-513)
Location In The Stage 7 Front Heatshield HPC Ring Cases And Related Parts (72-41-21, 03-180)
Spacer Rear Outer Diameter	8.028
	8.037	0.013
Stage 7 Front Heatshield Location Holes Bore	8.050	0.080
	8.108

SUBTASK 72-41-20-220-113 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1181

Refer to Figure.

Reference dimensions at location 1181. If required use the data written as a Note in TASK 72-41-21-200-000 (INSPECTION-000).

Table 33. Fits and Clearances (all dimensions in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1181
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location In The Stage 7 Front Heatshield HPC Ring Cases And Related Parts (72-41-21, 03-180)
Stage 7 Case Outer Diameter	21.309
	21.321	0.002
Stage 7 Front Heatshield Inner Bore	21.323	0.026
	21.3346

Table 34. Fits and Clearances (all dimensions in millimetres)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 1181
Stage 7 Case HPC Ring Cases And Related Parts (72-41-21, 03-500)
Location In The Stage 7 Front Heatshield HPC Ring Cases And Related Parts (72-41-21, 03-180)
Stage 7 Case Outer Diameter	541.25
	541.55	0.05
Stage 7 Front Heatshield Inner Bore	541.60	0.65
	541.90

1. Refer to Figure.
2. 1. Put the stage 7 rotor path ring front flange down on a clean work surface.
  2. Use IAE 1R18298 Installation drift 1 off to install the stage 7 front liner. Make sure the liner touches the stage 7 rotor path ring rear face.
  3. Measure and make a record of the stage 7 front liner split line clearance. The split line clearance must be 0.047 in. to 0.079 in. (1.20 mm to 2.00 mm).
3. 1. Put the stage 8 rotor path ring rear flange down on a clean work surface.
  2. Use IAE 1R18297 Assembly tool 1 off to install the stage 7 rear liner. Make sure the liner touches the stage 8 rotor path ring front face.
  3. Measure and make a record of the stage 7 rear liner split line clearance. The split line clearance must be 0.047 in. to 0.079 in. (1.20 mm to 2.00 mm).
4. 1. Put the stage 8 rotor path ring front flange down on a clean work surface.
  2. Use IAE 1R18298 Installation drift 1 off to install the stage 8 front liner. Make sure the liner touches the stage 8 rotor path ring rear face.
  3. Measure and make a record of the stage 8 front liner split line clearance. The split line clearance must be 0.047 in. to 0.079 in. (1.20 mm to 2.00 mm).
1. Refer to Figure.
2. 1. Put one of the stage 7 stator vane stops into position in the stage 7 case.
  2. Use the IAE 1R18501 Stop alignment tool 1 off and align the stage 7 stator vane stop in the stage 7 case.
  3. Install a washer HPC Ring Cases And Related Parts (72-41-21, 03-479) and a nut HPC Ring Cases And Related Parts (72-41-21, 03-478) onto the stage 7 stator vane stop.
  4. Torque the nut to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).
  5. Remove the stop aligning tool.
  6. Install the three remaining stage 7 stator vane stops as given in Step to Step.
1. Refer to Figure.
2. Install the stage 7 rotor path ring HPC Ring Cases And Related Parts (72-41-21, 03-450) front flange down into IAE 1R18299 Assembly tool 1 off. Align the location dowel hole in the stage 7 rotor path ring with the location dowel on the assembly tool.
3. Put the stage 7 case HPC Ring Cases And Related Parts (72-41-21, 03-500) front flange down onto a clean work bench.
4. Install the heating blanket on to the stage 7 case.
5. Heat the stage 7 case to 167 deg F to 212 deg F (75 deg C to 100 deg C).
6. Remove the heating blanket.
7. WARNING
  YOU MUST PUT ON THE CORRECT PROTECTIVE GLOVES BEFORE YOU TOUCH THE STAGE 7 CASE.
  Lift the stage 7 case onto the stage 7 rotor path ring. Align the location dowel hole with the location dowel in the stage 7 rotor path ring and assembly tool.
8. Install the 12 nuts, bolts and 24 washers part of the assembly tool. Tighten the nuts in the correct sequence to pull the stage 7 case onto the stage 7 rotor path ring. Make sure the flanges touch.
9. Let the assembly become cool, then remove the assembly tool nuts, bolts and washers.
10. Remove the stage 7 rotor path ring and case from the assembly tool. Put the assembly rear flange down on the clean IAE 1R18207 Support stand 1 off.
1. Refer to Figure and Figure.
2. Put the front support cone HPC Ring Cases And Related Parts (72-41-21, 03-300) rear flange down on a clean work bench.
3. Install the heating blanket on to the front support cone.
4. Heat the front support cone to 167 deg F to 212 deg F (75 deg C to 100 deg C).
5. Remove the heating blanket.
6. WARNING
  YOU MUST PUT ON THE CORRECT PROTECTIVE GLOVES BEFORE YOU TOUCH THE FRONT SUPPORT CONE.
  Lift the front support cone onto the stage 7 rotor path ring HPC Ring Cases And Related Parts (72-41-21, 03-450). Align the dowel in the front flange of the support cone with the location holes in the stage 7 rotor path ring and the stage 7 case HPC Ring Cases And Related Parts (72-41-21, 03-506).
7. Install eight slave nuts and bolts through the assembly joint flange. Install them at equal distances around the flange.
8. Tighten the nuts in the correct sequence to pull the front support cone onto the stage 7 rotor path ring and case. Make sure the flanges touch.
9. Let the assembly become cool, then remove the slave nuts and bolts.
1. Refer to Figure and Figure.
2. Install the heating blanket onto the support cone stiffening ring HPC Ring Cases And Related Parts (72-41-21, 03-350).
3. Heat the support cone stiffening ring to 167 deg F to 212 deg F (75 deg C to 100 deg C).
4. Remove the heating blanket.
5. WARNING
  YOU MUST PUT ON THE CORRECT PROTECTIVE GLOVES BEFORE YOU TOUCH THE SUPPORT CONE STIFFENING RING.
  Lift the support cone stiffening ring HPC Ring Cases And Related Parts (72-41-21, 03-350) onto the front support cone. Align the location dowel hole in the support cone stiffening ring with the location dowel in the front flange of the front support cone.
6. Install eight slave nuts and bolts through the assembly joint flange. Install them at equal distances around the flange.
7. Tighten the eight nuts in the correct sequence to pull the support cone stiffening ring onto the front support cone. Make sure the flanges touch.
8. Let the assembly become cool then remove the slave nuts and bolts.
9. Install the 37 bolts HPC Assembly (72-41-00, 01-552) and nuts HPC Assembly (72-41-00, 01-550) to attach the support cone stiffening ring to the front support cone, stage 7 rotor path and case. Install the bolts from the rear of the stage 7 case front flange. Refer to the detail identified A on Figure for the positions of the bolts.
10. Torque the nuts in the correct sequence to 36 lbfin to 45 lbfin (4.00 Nm to 5.00 Nm).
1. Put the assembled Stage 7 Rotor Path Ring and Case with the Front Support Cone and the Support Cone Stiffening Ring on IAE 1R18207 Support stand 1 off.
1. Refer to Figure, Figure and Figure.
2. 1. Install the four stage 7 stop vanes in to the stage 7 rotor path ring HPC Ring Cases And Related Parts (72-41-21, 03-450) at the stage 7 stator vane stops HPC Ring Cases And Related Parts (72-41-21, 03-480). Engage the vanes in the stage 7 front liner HPC Ring Cases And Related Parts (72-41-21, 03-450). Make sure the stage 7 stator vane stops are engaged in the slots in the stage 7 stop vane platforms.
  2. Push each stage 7 stop vane forward until the vane platform touches the stage 7 front liner.
  3. Push each stage 7 stop vane in a clockwise direction until the slot in the vane platform touches the stage 7 stator vane stop.
3. 1. Install the vanes in a clockwise direction. Engage each of the vanes in the stage 7 front liner. Make sure the platform of the first vane that is installed touches the platform of the stage 7 stop vane. Push each subsequent vane clockwise as it is installed, until the vane platforms touch.
  2. Push each vane forward until the vane platform touches the stage 7 front liner.
  3. Install the stage 7 stator vanes in the subsequent sequence.
    Install three stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-400).
    Install one stage 7 undersize stator vanes HPC Stator Vanes (72-41-22, 02-450).
    Install five stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-400).
    Install one stage 7 stator vane HPC Stator Vanes (72-41-22, 02-448).
    Install one stage 7 undersize stator vane HPC Stator Vanes (72-41-22, 02-450).
    Install three stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-400).
    Install one stage 7 undersize stator vane HPC Stator Vanes (72-41-22, 02-450).
    Install three stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-400).
4. Install the stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-400 , HPC Stator Vanes02-448 and HPC Stator Vanes 02-450) between the stage 7 stop vanes in the remaining three segments. Use the sequence given in Step to Step.
1. Refer to Figure, Figure and Figure.
2. Install the heating blanket on to the stage 7 case HPC Ring Cases And Related Parts (72-41-21, 03-500) rear flange.
3. Heat the stage 7 case to 167 deg F to 212 deg F (75 deg C to 100 deg C).
4. Remove the heating blanket.
5. Align the location dowel hole in the stage 8 rotor path ring HPC Ring Cases And Related Parts (72-41-21, 03-600) with the location dowel in the stage 7 case rear flange.
6. Install the stage 8 rotor path ring onto the stage 7 case and stator vanes. Engage the stage 7 stator vanes rear platform in the liner in the stage 8 rotor path ring.
7. Install eight slave bolts to attach the stage 8 rotor path ring to the stage 7 case. Install the bolts from the stage 7 case. Stage them at equal distances around the flange.
8. Tighten the nuts in the correct sequence to pull the stage 8 rotor path ring onto the stage 7 case.
9. Let the assembly become cool.
10. Do a check to make sure all the stage 7 stator vanes can be moved in their locations. Any vane that can not be moved must be replaced.
11. Measure and write down a record of the clearance at location 1123. The clearance must be 0.0116 in. to 0.0273 in. (0.295 mm to 0.695 mm).
1. Refer to Figure.
2. 1. Push the stage 7 stator vane adjacent to a stage 7 stop vane in a clockwise direction.
  2. Measure and write down a record of the clearance between the stop vane and the stator vane platforms. This must be 0.042 in. to 0.058 in. (1.07 mm to 1.47 mm).
    NOTE
    If the interplatform clearances are correct, continue with SUBTASK 72-41-20-440-104.
    If the interplatform clearances are not correct, continue with SUBTASK 72-41-20-440-057.
  3. Do Step and Step at the remaining three stage 7 stop vanes.
1. Refer to: Figure, Figure and Figure.
  NOTE
  To get the specified interplatform clearance at the four stage 7 stop vanes HPC Stator Vanes (72-41-22, 02-350), use the stage 7 undersize stator vanes HPC Stator Vanes (72-41-22, 02-450) or stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-448) as necessary.
  A maximum of four undersize vanes can be used between the two adjacent stop vanes. These must be set at equal distances between the stop vanes.
2. Remove the eight slave nuts and bolts which attach the stage 8 rotor path ring HPC Ring Cases And Related Parts (72-41-21, 03-600) to the stage 7 case HPC Ring Cases And Related Parts (72-41-21, 03-500).
3. 1. Install the heating blanket around the stage 7 case.
  2. Heat the stage 7 case to 167 deg F to 212 deg F (75 deg C to 100 deg C).
  3. Remove the heating blanket.
4. 1. WARNING
    YOU MUST PUT ON THE CORRECT PROTECTIVE GLOVES BEFORE YOU TOUCH THE STAGE 8 ROTOR PATH RING.
    Assemble the IAE 1R18684 Case extractor on the stage 7 case and front support cone. Refer to Figure.
    Attach the two parts of the ring assembly together with the six countersunk screws. Refer to detail A on Figure.
    Install the ring assembly nylon face down on the front support cone rear flange.
    Install one half of the split ring on the rear of the stage 7 case. Make sure the three pins go in the extractor holes in the stage 7 case.
    Attach the keeper ring to the split ring with the three bolts. Refer to detail A on Figure.
    Do Step and Step again to install the other half of the split ring.
    Install the six extractor bolts through the keeper ring and split ring. Tighten the extractor bolts until they touch the ring assembly.
  2. Continue to tighten the extractor bolts by small equal amounts until the stage 8 rotor path ring is removed.
5. 1. Remove the 37 nuts and bolts that attach the stage 7 case to the stage 7 rotor path ring and front support cone.
  2. Install the case extracter IAE 1R18684 Case extractor or IAE 1R18434 Case extractor, 3 off.
  3. Adjust the extracter bolts until they make contact with the assembly.
  4. Turn each extracter bolt a small equal quantity, do this step again until the stage 7 case is removed.
  5. Remove the extracter and stage 7 case, place on a clean work surface.
6. CAUTION
  UNDERSIZE VANES MUST NOT BE INSTALLED ADJACENT TO THE STOP VANES, THE BORESCOPE POSITION OR OTHER UNDERSIZE VANES.
  Remove the stage 7 stator vanes HPC Stator Vanes (72-41-22, 02-448 or 02-450) and install the stage 7 vanes as necessary. One stage 7 undersize stator vane will give an increase or decrease in the interplatform clearance of 0.016 in. (0.40 mm).
7. Install the stage 8 rotor path ring as given in Step.
8. Measure and write a record of the interplatform clearances at the stage 7 stop vanes as given in Step.
1. Refer to: Figure and Figure.
2. 1. Put one half of the stage 7 front heatshield in to position on the stage 7 case HPC Ring Cases And Related Parts (72-41-21, 03-500). Locate the heatshield on the spacers and make sure the heatshield joints are in the correct positions.
  2. Put the remaining half of the stage 7 front heatshield into position on the stage 7 case. Locate the heatshield on the spacers and make sure the end plates are correctly located.
  3. Install the 10 bolts HPC Assembly (72-41-00, 01-544) and nuts HPC Assembly (72-41-00, 01-540) to attach the stage 7 front heatshield to the stage 7 case. Refer to the detail identified at B.
  4. Torque the nuts in the correct sequence to 36 lbfin to 45 lbfin (4.00 Nm to 5.00 Nm).
3. Measure and write down a record of the clearance at location 1181. This must be 0.004 in.to 0.024 in. (0.10 mm to 0.60 mm). Refer to Figure.

View through the HP Compressor Rear Cases and Vanes

Sheet 1

Sheet 2

Sheet 1

Sheet 2

Install the Stage 7 Stator Vane Stops

Assemble the stage 7 rotor path ring and case on the assembly tool

Sheet 1

Sheet 2

Sheet 1

Sheet 2

Sheet 3

Measure the Stator Vane Interplatform Clearances

Remove the Stage 8 Rotor Path Ring

Remove the Stage 7 Case

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:	LOCAL
Tool Number:	Heating blanket
Tool Name:	Heating blanket

TASK 72-41-20-440-001-A00 HPC Rear Cases And Vanes Assembly - Assemble The HPC Stage 7 Case And Stator Vanes, Assembly-001

Export Control

Copyright

Applicability

Common Information

TASK 72-41-20-440-001-A00 HPC Rear Cases And Vanes Assembly - Assemble The HPC Stage 7 Case And Stator Vanes, Assembly-001

General

NOTE

NOTE

Preliminary Requirements

Pre-Conditions

Support Equipment

Consumables, Materials and Expendables

Spares

Safety Requirements

Procedure

SUBTASK 72-41-20-220-051 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1119

SUBTASK 72-41-20-220-052 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at location 1121

SUBTASK 72-41-20-220-053 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1147

SUBTASK 72-41-20-220-054 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1100

SUBTASK 72-41-20-220-055 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1145

SUBTASK 72-41-20-220-056 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1101

SUBTASK 72-41-20-220-058 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1120

SUBTASK 72-41-20-220-059 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1102

SUBTASK 72-41-20-220-063 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1122

SUBTASK 72-41-20-220-064 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1123

SUBTASK 72-41-20-220-107 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1189

SUBTASK 72-41-20-220-108 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1187

SUBTASK 72-41-20-220-109 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1186

SUBTASK 72-41-20-220-110 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1180

SUBTASK 72-41-20-220-111 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1179

SUBTASK 72-41-20-220-112 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at location 1144

SUBTASK 72-41-20-220-113 Reference Fits and Clearances of the HP Compressor Rear Cases and Vanes at Location 1181

SUBTASK 72-41-20-440-051 Install the Stage 7 Front and Rear Liners

SUBTASK 72-41-20-440-052 Install the Stator Vane Stops in the Stage 7 Case

SUBTASK 72-41-20-440-098 Assemble the Stage 7 Rotor Path Ring and Case

WARNING

SUBTASK 72-41-20-440-099 Install the Front Support Cone onto the Stage 7 Rotor Path Ring and Case

WARNING

SUBTASK 72-41-20-440-100 Install the Support Cone Stiffening Ring

WARNING

SUBTASK 72-41-20-440-101 Put the Assembly on the Bench

SUBTASK 72-41-20-440-054 Install the Stage 7 Stator Vanes

SUBTASK 72-41-20-440-055 Install the Stage 8 Rotor Path Ring

SUBTASK 72-41-20-440-056 Measure the Interplatform Clearances

NOTE

SUBTASK 72-41-20-440-057 Install the Stage 7 Undersize Vanes

NOTE

WARNING

CAUTION

SUBTASK 72-41-20-440-104 Install the Stage 7 Front Heatshields

Figure: View through the HP Compressor Rear Cases and Vanes

View through the HP Compressor Rear Cases and Vanes

Figure: The Locations for the Fits and Clearances

Sheet 1

Figure: The Locations for the Fits and Clearances

Sheet 2

Figure: Install the Stage 7 Front Liner

Sheet 1

Figure: Install the Stage 7 Front and Rear Liners

Sheet 2

Figure: Install the Stage 7 Stator Vane Stops

Install the Stage 7 Stator Vane Stops

Figure: Assemble the stage 7 rotor path ring and case on the assembly tool

Assemble the stage 7 rotor path ring and case on the assembly tool

Figure: Assemble the Front Support Cone and The Stage 7 Rotor Path Ring and Case

Sheet 1

Figure: Assemble the Front Support Cone and the Stage 7 Rotor Path Ring and Case

Sheet 2

Figure: Install the Stage 7 Stator Vanes

Sheet 1

Figure: Install the Stage 7 Stator Vanes

Sheet 2

Figure: Install the Stage 7 Stator Vanes

Sheet 3

Figure: Measure the Stator Vane Interplatform Clearances

Measure the Stator Vane Interplatform Clearances

Figure: Remove the Stage 8 Rotor Path Ring

Remove the Stage 8 Rotor Path Ring

Figure: Remove the Stage 7 Case