Preliminary Requirements

Procedure

1. SUBTASK 72-45-24-350-064 Disassemble the Stage 2 HPT Ring Segment and Vane Cluster

   1. If necessary, mark the detail parts to make sure the same parts are assembled as a set.

      1. Refer to Figure and Figure.

         Make a mark by the procedure given in the SPM TASK 70-09-00-400-501.

         Use a CoMat 06-110 PENCIL or CoMat 06-111 PENCIL.

   2. 
      CAUTION
      DO NOT USE MASKING TAPE TO COVER THE CANNON HOLES. TAPE RESIDUE CAN CAUSE DAMAGE TO THE PART.

      Install a locally fabricated plug in the vane inner diameter cannon holes.

      1. Refer to Figure or Figure.

   3. Install the vane cluster in the IAE 3P16216 Drill fixture 1 off.

      1. Refer to Figure.

   4. Drill out the two rivets.

      1. Refer to Figure or Figure.

         Be careful not to damage the material on the adjacent parts when you drill.

   5. Remove the ring segment and vane cluster from the drill fixture.

   6. Remove the rivets and disassemble the vane cluster.

      1. Refer to Figure.

2. SUBTASK 72-45-24-220-073 Examine the Ring Segment Assembly and One Detail Vane Assembly Rivet Holes

   1. Examine the ring segment and detail vane assembly rivet holes.

      1. Refer to TASK 72-45-24-200-000 (INSPECTION-000).

3. SUBTASK 72-45-24-350-065-001 Assemble the Vane Cluster Detail Parts for Drilling the Rivets Holes (When You Replace Two Detail Vanes)

   1. NOTE

      When two detail vanes are replaced with new or repaired vanes with no rivet holes, the ring segment rivet holes must be welded. Refer to Repair, VRS3321 TASK 72-45-24-300-014 (REPAIR-014).

      Install the ring segment assembly and two vane assemblies in the IAE 3P16216 Drill fixture 1 off.

      1. Refer to Figure and Figure.

         If the vanes and ring segment details are not marked, you can use detail parts from other vane clusters if they have the same requirements given in the figures and the vane class difference is not more than four.

   2. Install shims in Gaps N and P. Use the correct shimstock thickness.

      1. Refer to Figure.

   3. Tighten the vane cluster in the drill fixture.

      1. Refer to Figure.

   4. Drill the vane rivet holes.

      1. Refer to Figure and Figure.

         Turn the detail drill fixture quarter-turn screw 90 degrees and position the detail leaf and drill guide bushings up.

         Do not use the drill guide bushings to drill the holes.

         Use the ring segment rivet holes as a transfer guide.

         The rivet hole diameter is between 0.159 and 0.163 in. (4.039 and 4.140 mm).

   5. Remove the vane assemblies and ring segment assembly from the drill fixture.

4. SUBTASK 72-45-24-350-065-002 Assemble the Vane Cluster Detail Parts for Drilling the Rivet Holes (When You Replace One Detail Vane)

   1. NOTE

      When one detail vane assembly is replaced with a new or repaired vane with no rivet holes, the ring segment rivet holes corresponding to the vane to be replaced must be welded. Refer to Repair, VRS3321 TASK 72-45-24-300-014 (REPAIR-014).

      Install the ring segment assembly and two vane assemblies in the IAE 3P16216 Drill fixture 1 off.

      1. Refer to Figure and Figure.

         If the vanes and ring segment details are not marked, you can use detail parts from other vane clusters if they have the same requirements given in the figures and the vane class difference is not more than four.

   2. Put a rivet in the vane rivet hole and ring segment to align the vane assembly that is not to be drilled. Do not set the rivet.

      1. Refer to Figure.

   3. Install shims in Gaps N and P. Use the correct shimstock thickness.

      1. Refer to Figure.

   4. Tighten the vane cluster in the drill fixture.

      1. Refer to Figure.

   5. Drill the other ring segment and vane assembly rivet hole.

      1. Refer to Figure and Figure.

         Turn the detail drill fixture quarter-turn screw 90 degrees and position the detail leaf and drill guide bushings up.

         Do not use the drill guide bushings to drill the holes.

         Use the ring segment rivet hole as a transfer guide.

         The rivet hole diameter is between 0.159 and 0.163 in. (4.039 and 4.140 mm).

   6. Remove the vane assemblies and ring segment assembly from the drill fixture.

5. SUBTASK 72-45-24-350-065-003 Assemble the Vane Cluster Detail Parts for Drilling the Rivet Holes (When you Replace One Detail Vane with a Vane that has an Existing Hole)

   1. NOTE

      When one detail vane assembly is replaced with a repaired vane with a rivet hole, the rivet hole of the vane to be replaced must be welded. Use the old rivet hole to locate the new rivet hole. Refer to Repair, VRS3321 TASK 72-45-24-300-014 (REPAIR-014).

      Install the ring segment assembly and the two vane assemblies in to the IAE 3P16216 Drill fixture 1 off.

      1. Refer to Figure and Figure.

         If the vanes and the ring segment details are not marked, you can use detail parts from other vane clusters if they have the same requirements given in the figures and the vane class difference is not more than four.

   2. Put a rivet in the vane rivet hole and ring segment to align the vane assembly that is not to be drilled. Do not set the rivet.

      1. Refer to Figure or Figure.

   3. Install the shims in Gaps N and P. Use the correct shimstock thickness.

      1. Refer to Figure.

   4. Tighten the vane cluster in the drill fixture.

      1. Refer to Figure.

   5. Transfer drill the ring segment rivet hole.

      1. Refer to Figure and Figure.

         Turn the detail drill fixture quarter-turn screw 90 degrees and position the detail leaf and drill guide bushing up.

         Do not use the drill guide bushing to drill the holes.

         Use the old vane assembly rivet hole as a transfer guide.

         The rivet hole diameter is between 0.159 and 0.163in. (4.039 and 4.140 mm).

   6. Remove the vane assemblies and the ring segment assembly from the drill fixture.

6. SUBTASK 72-45-24-350-066 Deburr the Rivet Holes

   1. Deburr the vane assemblies rivet holes.

      1. Remove the burr and chips.

         Refer to the SPM TASK 70-39-03-390-501.

7. SUBTASK 72-45-24-350-067 Assemble and Rivet the Vane Cluster

   1. Install the seal assembly and seals in the seal grooves between the two vane assemblies.

      1. Refer to Figure and Figure.

         Use CoMat 02-009 BEESWAX SUBSTITUTE to hold the seals in the vane seal grooves.

         Use the old seals if they are not bent, burned, cracked or worn.

   2. 
      CAUTION
      DO NOT USE MASKING TAPE OR WIRE TO HOLD THE VANE CLUSTER ASSEMBLY TOGETHER FOR ASSEMBLY. WIRE OR TAPE RESIDUE CAN CAUSE DAMAGE TO THE AIRFOIL.

      Install the ring segment assembly to the vane assemblies inner diameter. Hold the vane cluster together with a nylon strap or equivalent.

      1. Refer to Figure.

   3. Install the two rivets.

      1. Refer to Figure or Figure.

   4. Examine Gaps N, P and Surface H.

      1. Refer to Figure.

   5. Rivet the ring segment assembly to the vane assemblies.

      1. Refer to Figure or Figure.

         Use the cold set rivet method.

         Refer to the SPM TASK 70-39-03-390-501.

   6. Remove the nylon strap.

8. SUBTASK 72-45-24-220-074 Inspect the Rivets

   1. Inspect the installed rivets.

      1. Refer to Figure or Figure.

         Use the procedure given in the SPM TASK 70-39-03-390-501.

9. SUBTASK 72-45-24-350-068 Remove the Plugs

   1. Remove the two plugs from the vane cannon holes.

      1. Refer to Figure or Figure.

Figure: Repair Details and Dimensions

Repair Details and Dimensions



Figure: Repair Details and Dimensions

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Figure: Repair Details and Dimensions (PN2A0172 and 2A1072)

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Figure: Repair Details and Dimensions (PN2A2072, 2A2172, 2A2772, 2A2172, 2A2072 and 2A2872)

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Repair Details and Dimensions (PN2A2072, 2A2172, 2A2772, 2A2172, 2A2072 and 2A2872)

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Figure: Repair Details and Dimensions

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Figure: Repair Details and Dimensions

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Figure: Repair Details and Dimensions

Repair Details and Dimensions