Repair of turbine exhaust case

Details Repair of turbine exhaust case Repair of turbine exhaust case

1999-01-29

2000-11-21

Cuda, Irene

Metal working

Method of mechanical manufacture

Impeller making

2988921, 2940208, B23P 1500

Patent

active

061485179

ABSTRACT:
A process is provided for repairing the horizontal mount area of a JT9D turbine exhaust case having two mounting flanges by inspecting the horizontal mount area, weld repairing any defects found in the case wall and installing a reinforcement brace onto the inside of the case wall in the horizontal mount area, wherein the reinforcement brace overlaps an area under one mounting flange and extends to and overlaps the area under the second mounting flange.

REFERENCES:
Pratt & Whitney Aircraft JT3D-7 Overhaul Manual: Turbine Exhaust Case REPAIR-2, 72-54-1 (2 pages, dated prior to Jan. 29, 1998); Turbine Exhaust Case REPAIR-3, 72-54-1 ( pp. 401-409, dated Mar. 1, 1978); and Turbine Exhaust Case REPAIR-10, 72-54-1 (pp. 401-407, dated Aug. 15, 1985).
Pratt & Whitney Service Bulletin No. 6077 (pp. 2-6, Aug. 1, 1992).

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