Preliminary Requirements

Procedure

1. SUBTASK 72-45-33-320-059 Machine the Bayonet Locking Slot(s)

   1. Refer to Figure.

   2. Machine the bayonet locking slot(s) of HPT stage 2 blade retaining plate to remove the damage(s) as follows. See Figure for the limits.

      1. Remove an additional 0.002 in. - 0.003 in. (0.051 mm - 0.076 mm) of material more than depth of damage.

      2. It is permissible to machine only two (2) bayonet locking slots in any 90 degree quadrant.

      3. Break edges 0.003 in. - 0.015 in. (0.077 mm - 0.381 mm).

      4. Surface texture 63 micro-inches (1.6 micro-meters) must be maintained.

      5. No mismatch permitted in the machined slot(s).

      6. Slot(s) to be machined symmetrically on both sides.

2. SUBTASK 72-45-33-110-062 Clean the Repaired Area(s)

   1. Refer to Figure.

   2. Clean the repaired area(s) by SPM TASK 70-11-03-300-503.

3. SUBTASK 72-45-33-230-066 Do a Fluorescent Penetrant Inspection of the Repaired Area(s)

   1. Refer to Figure.

   2. Do a fluorescent penetrant inspection of the repaired area(s) by one of the methods that follow:

      1. SPM TASK 70-23-05-230-501, use ultra-high sensitivity.

         1. No cracks are allowed.

      2. TASK 72-45-33-200-000 and applicable part number.

         1. No cracks are allowed.

4. SUBTASK 72-45-33-380-058 Shotpeen the Repaired Area(s)

   1. Refer to Figure.

   2. Shotpeen the repaired area(s) on HPT stage 2 blade retaining plate by SPM TASK 70-38-13-380-501.

      1. Use an intensity of 4A and S-170 maximum shot size.

      2. Shotpeen is not permitted on any finish coated surfaces and marking location.

      3. No rolled edges or sharp lines of demarcation are permitted.

5. SUBTASK 72-45-33-220-101 Do a Dimensional Inspection

   1. Do a dimensional inspection of the machined bayonet locking slot(s) of HPT stage 2 blade retaining plate to the limits specified in Figure.

6. SUBTASK 72-45-33-350-062 Mark the Machined Bayonet Slot(s)

   1. Mark the machined bayonet slot(s) with an "MS" in area indicated in Figure.

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

   3. Marking must be accomplished with only deep electrolytic etch, vibration peen, or deep dot peen.

   4. Do not mark over previously repaired area(s).

7. SUBTASK 72-45-33-350-063 Mark the Part

   1. Refer to Figure.

   2. Mark VRS3856 adjacent to the part number.

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

      2. Marking must be accomplished with only deep electrolytic etch, vibration peen, or deep dot peen.

Figure: HPT Stage 2 Blade Retaining Plate - Bayonet Locking Slots, Machine Repair, Repair-006 (VRS3856)

VRS Marking Location



0.250 Inch (6.350 mm) Maximum



Legend

[1]	VRS Marking Location
[2]	0.250 Inch (6.350 mm) Maximum
[3]	16.318 -16.328 Inch (414.478 - 414.731 mm) Diameter, Reference
[4]	8.335 Inch (211.709 mm) Maximum Radius From Axis Of Diameter B, After Machine
[5]	0.926 Inch (23.520 mm) Maximum Slot Width, After Machine
[6]	0.125 Inch (3.175 mm) Radius, Two Places
[7]	Smooth Transition Required At Radii, After Machine At Two Places
[8]	0.490 Inch (12.446 mm) Radius, Two Places
[9]	0.243 Inch (6.173 mm), Two Places
[10]	Shotpeen The Repaired Slot Per Text
[11]	Shotpeen Overspray Permitted, Minimum Intensity Waived But Complete Coverage Is Required
[12]	Shotpeen In This Area Is Not Permitted.
[13]	"MS" Marking Location For Machined Slot(s)
[14]	0.050 Inch (1.270 mm) Minimum From All Edges
[15]	0.100 Inch (2.540 mm) Maximum
[16]	Electrical Contact Permissible Only In This Area. No Burning, Pitting Or Selective Attack Permitted.

Close

NOTE All dimensions apply when Surface F is flat within 0.001 Inch (0.026 mm) and Diameter G Maintains a clearance envelope of diameter 17.215 Inch (437.261 mm) in free state or constrained. Constraint contact allowed only on Surfaces F, H, S, T and Diameter G.