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TASK 72-00-40-800-801
1 . CDN Case Fuel Nozzle Pad Broken Bolt Removal.
  NOTE:72-00-40, SPECIAL PROCEDURES 001 can be used to remove broken bolts from both key lock and ring lock insert design cases. Refer to Case #01984523.
  A.This procedure provides instructions for the removal of broken bolts from the combustor case fuel nozzle pad. Refer to Figure 201.
2 . Tools, Equipment, and Materials.
  NOTE:
Repair sources can use equivalent alternatives for tools, equipment, and consumable materials, however, the repair source must demonstrate and document equivalency.
  A.Tools and Equipment.
  (1)Special Tools.
 
Description
Tool No.
 
Canyon Run Drill Fixture
11654-A-001
  (2)Standard Tools and Equipment. None.
  (3)Locally Manufactured Tools. None.
  B.Consumable Materials. None.
  C.Referenced Procedures.
 
ATA No.
Description
 
72-41-01
Inspection 001
  D.Expendable Parts. None.
  E.SPD Information. None.
  F.Special Solutions. None.
  G.Test Specimens. None.
3 . Dimensional Information.
  Subtask 72-00-40-220-157
  A.Refer to TASK 72-41-01-200-801 (72-41-01, INSPECTION 001).
4 . Setup Information.
  None.
5 . Procedure.
  Subtask 72-00-40-350-001
  A.Remove the broken bolts from the combustor case fuel nozzle pads. Refer to Figure 201 and do as follows:
  (1)Tape-off the slot and the threaded holes of the combustion case.
  (2)Grind the broken engine bolt flush with the combustion case.
  (3)Safety the plate (item 1) on the fuel nozzle pad with three screws (item 7).
  (4)Insert the 0.272 bushing (item 4) over the broken engine bolt.
  (5)Safety the 0.272 bushing (item 4) with the lock screw (item 6).
  (6)Lubricate the tip of the bits to prevent overheating.
  (7)Drill the shank of the engine bolt to below the swage material with the 0.272 drill bit (item 11).
  (8)Remove the lock screw (item 6), the 0.272 bushing (item 4), the screws (item 7) and the plate (item 1).
  (9)Install the 0.3125 stop collar to a depth of 0.08-0.09 in. (2.0-2.3 mm) on the 0.3125 drill bit (item 12).
  (10)Use the 0.3125 drill bit (item 12) to break the swage between the insert and the locking ring. Remove locking ring.
  (11)Safety the plate (item 1) on the fuel nozzle pad using three screws (item 7).
  (12)Install the 0.125 bushing (item 2) above the damaged engine bolt.
  (13)Safety the 0.125 bushing (item 2) to the plate (item 1) with the lock screw (item 6).
  (14)Lubricate the tip of the bits to prevent overheating.
  (15)Drill the engine bolt with the 0.125 drill bit (item 9) deep enough to permit the use of easy-out tool.
  NOTE:
A 0.125 stop collar is provided to control drill depth.
  (16)Remove the 0.125 bushing (item 2) and install the 0.182 bushing (item 3) above the damaged engine bolt.
  (17)Safety the 0.182 bushing (item 3) with the lock screw (item 6).
  (18)Drill the engine bolt with the 0.182 drill bit (item 10) deep enough to permit the use of easy out tool.
  NOTE:
A 0.182 stop collar is provided to control drill depth.
  (19)Remove the lock screw (item 6), 0.182 bushing (item 3), screws (item 7), and the plate (item 1).
  (20)Use an easy-out to remove the engine bolt.
  (21)Clean and store the tool parts in the container.
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Figure 201   (Sheet 1 ) Removal of the Broken Bolts from the Combustor Case Fuel Nozzle Pad
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Figure 201   (Sheet 1 ) Removal of the Broken Bolts from the Combustor Case Fuel Nozzle Pad