Preliminary Requirements

Procedure

1. SUBTASK 72-41-30-220-051 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1209

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1209. If required use the data written as a note in TASK 72-41-31-200-000 (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 1209
      Stage 3 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-685)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 3 Rotor Path Ring Location Thickness	0.1151
      	0.1171	0.0019
      HP Compressor Front Case Location Slot Width For The Stage 3 Rotor Path Ring	0.1190	0.0059
      	0.1210

      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 1209
      Stage 3 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-685)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 3 Rotor Path Ring Location Thickness	2.925
      	2.975	0.050
      HP Compressor Front Case Location Slot Width For The Stage 3 Rotor Path Ring	3.025	0.150
      	3.075

2. SUBTASK 72-41-30-220-052 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1210

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1210. If required use the data written as a note in TASK 72-41-31-200-000 (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 1210
      Stage 3 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-685)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 3 Rotor Path Ring Width	2.3523
      	2.3562	0.0078
      HP Compressor Front Case Slot Width For The Stage 3 Rotor Path Ring	2.3641	0.0157
      	2.3681

      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 1210
      Stage 3 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-685)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 3 Rotor Path Ring Width	59.75
      	59.85	0.20
      HP Compressor Front Case Slot Width For The Stage 3 Rotor Path Ring	60.05	0.40
      	60.15

3. SUBTASK 72-41-30-220-053 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1221

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1221. If required use the data written as a note in TASK 72-41-31-200-000 (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 1221
      Stage 4 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 4 Rotor Path Ring Location Thickness	0.1151
      	0.1171	0.0019
      HP Compressor Front Case Location Slot Width For The Stage 4 Rotor Path Ring	0.1190	0.0059
      	0.1210

      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 1221
      Stage 4 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 4 Rotor Path Ring Location Thickness	2.925
      	2.975	0.05
      HP Compressor Front Case Location Slot Width For The Stage 4 Rotor Path Ring	3.025	0.15
      	3.075

4. SUBTASK 72-41-30-220-054 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1222

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1222. If required use the data written as a note in TASK 72-41-31-200-000 (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 1222
      Stage 4 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 4 Rotor Path Ring Width	2.1830
      	2.1870	0.0039
      HP Compressor Front Case Slot Width For The Stage 4 Rotor Path Ring	2.1909	0.0118
      	2.1948

      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 1222
      Stage 4 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 4 Rotor Path Ring Width	55.45
      	55.55	0.10
      HP Compressor Front Case Slot Width For The Stage 4 Rotor Path Ring	55.65	0.30
      	55.75

5. SUBTASK 72-41-30-220-055 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1233

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1233. If required use the data written as a note in TASK 72-41-31-200-000 (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 1233
      Stage 5 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-695)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 5 Rotor Path Ring Location Thickness	0.1151
      	0.1171	0.0019
      HP Compressor Front Case Location Slot Width For The Stage 5 Rotor Path Ring	0.1190	0.0059
      	0.1210

      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 1233
      Stage 5 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-695)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 5 Rotor Path Ring Location Thickness	2.925
      	2.975	0.050
      HP Compressor Front Case Location Slot Width For The Stage 5 Rotor Path Ring	3.025	0.150
      	3.075

6. SUBTASK 72-41-30-220-056 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1234

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1234. If required use the data written as a note in TASK 72-41-31-200-000 (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 1234
      Stage 5 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-695)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 5 Rotor Path Ring Location Thickness	1.6437
      	1.6476	0.0039
      HP Compressor Front Case Location Slot Width For The Stage 5 Rotor Path Ring	1.6515	0.0118
      	1.6555

      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 1234
      Stage 5 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-695)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 5 Rotor Path Ring Location Thickness	41.75
      	41.85	0.10
      HP Compressor Front Case Location Slot Width For The Stage 5 Rotor Path Ring	41.95	0.30
      	42.05

7. SUBTASK 72-41-30-220-057 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1245

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1245. If required use the data written as a note in TASK 72-41-31-200-000 (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 1245
      Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 6 Rotor Path Ring Location Thickness	0.1151
      	0.1171	0.0019
      HP Compressor Front Case Location Slot Width For The Stage 6 Rotor Path Ring	0.1190	0.0059
      	0.1210

      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 1245
      Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 6 Rotor Path Ring Location Thickness	2.925
      	2.975	0.050
      HP Compressor Front Case Location Slot Width For The Stage 6 Rotor Path Ring	3.025	0.150
      	3.075

8. SUBTASK 72-41-30-220-058 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1246

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1246. If required use the data written as a note in TASK 72-41-31-200-000 (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 1246
      Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 6 Rotor Path Ring Width	1.4074
      	1.4114	0.0039
      HP Compressor Front Case Slot Width For The Stage 6 Rotor Path Ring	1.4153	0.0118
      	1.4192

      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 1246
      Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 6 Rotor Path Ring Width	35.75
      	35.85	0.10
      HP Compressor Front Case Slot Width For The Stage 6 Rotor Path Ring	35.95	0.30
      	36.05

9. SUBTASK 72-41-30-220-059 Reference Fits and Clearances of the HP Compressor Front Cases and Vanes at Location 1247

   1. Refer to Figure.

   2. test.

      Reference dimensions at location 1247. If required use the data written as a note in TASK 72-41-31-200-000 (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 1247
      Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 6 Rotor Path Ring Rear Internal Diameter	0.0938
      	0.1098	0.0118
      HP Compressor Front Case Location Leg Thickness For The Stage 6 Rotor Path Ring	0.0714	0.0383
      	0.0820

      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 1247
      Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700)
      Location In The HP Compressor Front Case ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-400)
      Stage 6 Rotor Path Ring Rear Internal Diameter	2.385
      	2.790	0.30
      HP Compressor Front Case Location Leg Thickness For The Stage 6 Rotor Path Ring	1.815	0.975
      	2.085

10. SUBTASK 72-41-30-440-051 Install the HP Compressor Front Cases onto the Half Location Rings

    1. Refer to Figure and Figure.

    2. test.

       Put IAE 1R18204 Location ring 2 off ontoIAE 1R18207 Support stand 1 off.

    3. Install IAE 1R18249 Lifting tool 2 off onto the HP Compressor upper and lower half front cases rear flanges.

       1. Use a suitable hoist and lift a lifter in to position on each HP Compressor half front case rear flange.

       2. Engage the two location pins on the lifter in the boltholes in the split line flanges.

       3. Adjust the six screws and engage them in six boltholes in the rear flange of each HP Compressor half front case.

    4. Use a suitable hoist and lift the HP Compressor front half cases onto the half location rings. Align the eight boltholes in the two half location rings with eight boltholes in the HP Compressor front cases front flanges.

    5. Install the eight bolts and washers to attach the HP Compressor front half cases to the half location rings. Tighten the bolts.

    6. Remove the two lifters from the HP Compressor front cases rear flanges.

11. SUBTASK 72-41-30-440-052 Install the Stage 3 and 5 Borescope Blanks

    1. Refer to Figure.

    2. test.

       Put the stage 3 borescope blank ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 1-100) into position in the lower half HP Compressor front case.

    3. Apply CoMat 10-072 ANTISEIZE COMPOUND (MoDISULFIDE) or CoMat 10-070 ANTI-SEIZE COMPOUND to the two bolts which attach the stage 3 borescope blank to the lower half of the HP Compressor front case.

    4. Install the two bolts ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 1-102) which attach the stage 3 borescope blank to the lower half HP Compressor front case. Torque the bolts to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).

    5. Put the stage 5 borescope blank ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-140) into position in the lower half HP Compressor front case.

    6. Apply CoMat 10-072 ANTISEIZE COMPOUND (MoDISULFIDE) or CoMat 10-070 ANTI-SEIZE COMPOUND to the two screws which attach the stage 5 borescope blank to the lower half of the HP Compressor front case.

    7. Install the two screws ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31,01-142) which attach the stage 5 borescope blank to the lower half HP Compressor front case. Torque the screws to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).

12. SUBTASK 72-41-30-440-053 Install the Support Tool Blanks

    1. Refer to Figure.

    2. test.

       Install a support tool blank ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-120) into the upper half HP Compressor front case.

       1. Put the blank into position in the upper half HP Compressor front case.

       2. Apply a thin layer of CoMat 04-005 JOINTING COMPOUND, MEDIUM GRADE onto the face of the bracket ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-115) that will touch the blank. Locate the bracket on the blank.

       3. Apply CoMat 10-072 ANTISEIZE COMPOUND (MoDISULFIDE) or CoMat 10-070 ANTI-SEIZE COMPOUND to the two bolts which attach the bracket and the blank to the upper half of the HP Compressor front case.

       4. Install the two bolts ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-122) which attach the bracket and the blank to the upper half HP Compressor front case. Torque the bolts to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).

    3. Install the two support tool blanks into the lower half HP Compressor front case.

       1. Put the two blanks into position in the lower half HP Compressor front case.

       2. Locate the bracket ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-118) on the blank at the 120 degree position.

       3. Apply CoMat 10-072 ANTISEIZE COMPOUND (MoDISULFIDE) or CoMat 10-070 ANTI-SEIZE COMPOUND to the four bolts which attach the bracket and the blanks to the lower half of the HP Compressor front case.

       4. Install the four bolts ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-122) to attach the bracket and the blanks to the lower half HP Compressor front case. Torque the bolts to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).

13. SUBTASK 72-41-30-440-054 Install the HP Compressor Stage 3 Rotor Path Ring

    NOTE

    1. The HP compressor stage 3 rotor path ring that is installed must be a related set.

    2. The segments must be installed, into the HP compressor front case, from the split line flange opposite to the anti-rotation pin.

    1. Refer to Figure and Figure.

    2. test.

       Install the two segments of the stage 3 rotor path ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-685) into the upper half HP Compressor front case.

       1. Examine the identification marks engraved on the two Stage 3 Rotor Path Ring Segments. If one of the segments is marked with the symbol 'A' in triangle, the marked segment must be installed so that the stop face is not in contact with the anti-rotation pin. If the pair of the ring segments are engraved with the symbol, one must be rejected.

       2. Install one segment of the Stage 3 Rotor Path Ring into the upper half HP Compressor front case. Move the segment until the slot in the segment is against the anti-rotation pin.

       3. Install a sealing strip ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-677) into the slot in the segment at the centre of the upper half HP Compressor front case.

       4. Install a second segment of the stage 3 rotor path ring into the upper half HP Compressor front case. Engage the sealing strip in the slot in the segment. Make sure the two segments are in line with, or below the split line flanges.

       5. Set the clearance between the two segments to the dimensions shown at position A.

    3. Install the two segments of the Stage 3 Rotor Path Ring into the lower half HP Compressor front case.

       1. Install the two segments of the Stage 3 Rotor Path Ring into the lower half HP Compressor front case, as given in Step to Step.

14. SUBTASK 72-41-30-440-055 Install the HP Compressor Stage 4 Rotor Path Ring

    NOTE

    1. The HP Compressor Stage 4 Rotor Path Ring that is installed must be a related set.

    2. The segments must be installed, into the HP Compressor front case, from the flange opposite to the anti-rotation pin.

    1. Refer to Figure and Figure.

    2. test.

       Install the segments of the Stage 4 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690) into the upper half HP Compressor front case.

       1. Examine the identification marks engraved on the two Stage 4 Rotor Path Ring Segments. If one of the segments is marked with the symbol 'A' in triangle, the marked segment must be installed so that the stop face is not in contact with the anti-rotation pin. If the pair of the ring segments are engraved with the symbol, one must be rejected.

       2. Install one segment of the Stage 4 Rotor Path Ring into the upper half HP Compressor front case. Move the segment until the slot in the segment is against the anti-rotation pin.

       3. Install a sealing strip ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-678) into the slot in the segment at the center of the upper half HP Compressor front case.

       4. Install a second segment of the Stage 4 Rotor Path Ring into the upper half HP Compressor front case. Engage the sealing strip in the slot in the segment. Make sure the two segments are in line with or below the split line flanges.

       5. Set the clearance between the two segments to the dimensions shown at position A.

    3. Install the segments of the Stage 4 Rotor Path Ring into the lower half HP Compressor front case.

       1. Install the two segments of the stage 4 rotor path ring and the sealing strip into the lower half HP compressor front case as given in Step to Step.

15. SUBTASK 72-41-30-440-056 Install the HP Compressor Stage 5 Rotor Path Ring

    NOTE

    1. The HP Compressor Stage 5 Rotor Path Ring that is installed must be a related set.

    2. The segment must be installed, into the HP Compressor front case, from the flange opposite to the anti-rotation pin.

    1. Refer to Figure and Figure.

    2. test.

       Install the segments of the Stage 5 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-695) into the upper half HP Compressor front case.

       1. Examine the identification marks engraved on the two Stage 5 Rotor Path Ring Segments. If one of the segments is marked with the symbol 'A' in triangle, the marked segment must be installed so that the stop face is not in contact with the anti-rotation pin. If the pair of the ring segments are engraved with the symbol, one must be rejected.

       2. Install one segment of the Stage 5 Rotor Path Ring into the upper half HP Compressor front case. Move the segment until the slot in the segment is against the anti-rotation pin.

       3. Install a sealing strip ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-679) into the slot in the segment at the centre of the upper half HP Compressor front case.

       4. Install a second segment of the Stage 5 Rotor Path Ring into the upper half HP Compressor front case. Engage the sealing strip in the slot in the segment. Make sure the two segments are in line with, or below the split line flanges.

       5. Set the clearance between the two segments to the dimensions shown at position A.

    3. Install the segments of the Stage 5 Rotor Path Ring into the lower half HP Compressor front case.

       1. Install the two segments of the Stage 5 Rotor Path Ring and the sealing strip in to the lower half HP Compressor front case, as given in Step to Step.

16. SUBTASK 72-41-30-440-057 Install the HP Compressor Stage 6 Rotor Path Ring

    NOTE

    1. The HP Compressor Stage 6 Rotor Path that is installed must be a related set.

    2. The segments must be installed into the front HP Compressor case, from the flange opposite to the anti-rotation pin.

    1. Refer to Figure and Figure.

    2. test.

       Install the segments of the stage 6 rotor path ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700) into the upper half HP Compressor front case.

       1. Examine the identification marks engraved on the two stage 6 rotor path ring segments. If one of the segments is marked with the symbol 'A' in triangle, the marked segment must be installed so that the stop face is not in contact with the anti-rotation pin. If the pair of the ring segments are engraved with the symbol, one must be rejected.

       2. Install one segment of the Stage 6 Rotor Path Ring into the upper half HP Compressor front case. Move the segment until the slot in the segment is against the anti-rotation pin.

       3. Install a sealing strip ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-680) into the slot in the segment at the center of the upper half HP Compressor front case.

       4. Install a second segment of the Stage 6 Rotor Path Ring into the upper half HP Compressor front case. Engage the sealing strip in the slot in the segment. Make sure the two segments are in line with or below the split line flanges.

       5. Set the clearance between the two segments to the dimensions shown at position A.

    3. Install the segments of the Stage 6 Rotor Path Ring into the lower half HP Compressor front case.

       1. Install the two segments of the stage 6 rotor path ring and the sealing strip in to the lower half HP Compressor front case, as given in Step to Step.

17. SUBTASK 72-41-30-440-058 Install the HP Compressor Split Line Flange Bolts

    1. Refer to: Figure

    2. test.

       Install IAE 1R18249 Lifting tool 2 off onto the rear flange of the HP Compressor half cases as given in Step.

    3. Use a suitable hoist and lift the two HP Compressor half cases from the stand onto a inspection table. Carefully lower the HP Compressor half cases onto the inspection table.

    4. Remove the two lifting tools from the HP Compressor half cases.

    5. Install the sealing strips.

       1. Install two sealing strips ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-677) into the slots in the segments at the split line flange, of the Stage 3 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690).

       2. Install two sealing strips ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-678) into the slots in the segments at the split line flange, of the Stage 4 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-690).

       3. Install two sealing strips ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-679) into the slots in the segments, at the split line flange, of the Stage 5 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-695).

       4. Install two sealing strips ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-680) into the slots in the segments at the split line flange, of the Stage 6 Rotor Path Ring ENGINE-HP COMPRESSOR SPLIT CASES (72-41-31, 01-700).

    6. Align the HP Compressor front cases split line flanges. Make sure the sealing strips installed in Step. are correctly engaged in the opposite rotor path ring segment.

    7. 

       CAUTION

       YOU MUST NOT LET THE BOLTS TURN WHEN YOU INSTALL THEM. THE BOLTS ARE A CLOSE TOLERANCE FIT.

       Install the two bolts ENGINE-SECURING FEATURES-HP COMPRESSOR CASES (72-41-00, 01-112) and nuts ENGINE-SECURING FEATURES-HP COMPRESSOR CASES (72-41-00, 01-101) at the positions 31 and 13. Install the 30 bolts ENGINE-SECURING FEATURES-HP COMPRESSOR CASES (72-41-00, 01-108), spacers ENGINE-SECURING FEATURES-HP COMPRESSOR CASES (72-41-00, 01-104) and nuts ENGINE-SECURING FEATURES-HP COMPRESSOR CASES (72-41-00, 01-102) at the remaining positions. Lightly tighten the nuts.

    8. Examine the HP Compressor front cases at the split line flanges to make sure:

       1. The alignment is correct.

       2. The sealing strips are correctly engaged.

    9. 

       CAUTION

       YOU MUST NOT LET THE BOLTS TURN WHEN YOU TORQUE THE NUTS. THE BOLTS ARE A CLOSE TOLERANCE FIT.

       Torque the nuts to 180 lbfin to 220 lbfin (20.00 Nm to 25.00 Nm). Refer to Figure for the sequence to torque the nuts.

18. SUBTASK 72-41-30-440-059 Assemble the Checking Fixture, the Support Stand and the Foot Assembly

    1. Refer to Figure.

    2. test.

       Put IAE 1R18202 Support stand 1 off onto the IAE 1R18233 Foot support 1 off. Install the attachment pin to attach the support stand to the foot assembly.

    3. Attach a suitable hoist to IAE 1R18031 Checking fixture 1 off lifting eyes.

    4. Lift the checking fixture onto the support stand. Align the six holes in the support stand and the checking fixture.

    5. Install the six attachment bolts to attach the checking fixture to the support stand. Tighten the six attachment bolts.

    6. Remove the hoist.

19. SUBTASK 72-41-30-440-060 Install the HP Compressor Front Case on to the Checking Fixture

    1. Refer to Figure, Figure and Figure.

    2. 
       CAUTION
       MAKE SURE ALL THE TOOL FACES AND HP COMPRESSOR FRONT CASE FACES THAT TOUCH ARE CLEAN AND ARE NOT DEFECTIVE.

       test.

       Install IAE 1R18205 Lifting tool 1 off onto the HP Compressor front case rear flange.

       1. Release the six adjusting screws on the two clamps.

       2. Remove the six bolts and washers which attach the two clamps to the lifting tool. Remove the two clamps.

       3. Use a hoist and lift the lifting tool on the HP Compressor front case rear flange. Align the lifting tool with the HP Compressor front case rear flange.

       4. Put the two clamps in position on the lifting tool and the HP Compressor front case rear flange. Align the slots in the clamps with the holes in the lifting tool.

       5. Install the six bolts and washers to attach the two clamps to the lifting tool. Tighten the six bolts sufficiently to hold the clamps in their positions.

       6. Tighten the six adjusting screws to lift the clamps until they touch the HP Compressor front case rear flange.

       7. Tighten the six bolts to safety the two clamps to the lifting tool.

    3. Remove the eight bolts and washers which attach the HP Compressor front cases to the two location half rings.

    4. Install the HP Compressor front case on the checking fixture.

       1. Use the hoist attached to the lifting tool.

       2. Lift the HP Compressor front case and carefully put it into position on the checking fixture. Align the four dowels and the eight studs on the checking fixture with the correct holes in the HP Compressor case front flange.

       3. Install the eight washers and nuts onto the eight studs. Tighten the nuts to safety the assembly.

    5. Remove the lifting tool.

       1. Release the six adjusting screws which adjust the two clamps.

       2. Remove the six bolts and washers which attach the two clamps to the lifting tool.

       3. Remove the two clamps.

       4. Use the hoist and remove the lifting tool.

Figure: View through the HP Compressor front case

View through the HP Compressor front case



Figure: Locations for the fits and clearances

Locations for the fits and clearances



Figure: Install the lifter

Install the lifter



Figure: Install the HP Compressor front cases on to the half location rings

Install the HP Compressor front cases on to the half location rings



Figure: Install the borescope blanks and the support tool blanks

sheet 1



Legend

Install the borescope blanks and the support tool blanks

sheet 1

Close

Figure: Install the borescope blanks and the support tool blanks

sheet 2



Legend

Install the borescope blanks and the support tool blanks

sheet 2

Close

Figure: Install the stage 3 rotor path ring

Install the stage 3 rotor path ring



Figure: Stages 3 to 6 rotor path ring anti-rotation pins

Stages 3 to 6 rotor path ring anti-rotation pins



Figure: Install the stage 4 rotor path ring

Install the stage 4 rotor path ring



Figure: Install the stage 5 rotor path ring

Install the stage 5 rotor path ring



Figure: Install the stage 6 rotor path ring

Install the stage 6 rotor path ring



Figure: Install the split line flange bolts

Install the split line flange bolts



Figure: Assemble the checking fixture

Assemble the checking fixture



Figure: Install the HP compressor front case on the checking fixture

sheet 1



Legend

Install the HP compressor front case on the checking fixture

sheet 1

Close

Figure: Install the HP compressor front case on the checking fixture

sheet 2



Legend

Install the HP compressor front case on the checking fixture

sheet 2

Close