- Front stator case horizontal right flange.
- Extension case horizontal left flange.
- Extension case horizontal right flange.
3. Welding repair on engine
________________________ R WARNING : THE AIRCRAFT AND ENGINE MANUFACTURERS RECOMMEND THAT YOU DO NOT R WELD ENGINE COMPONENTS WHEN THE ENGINE IS INSTALLED ON THE R AIRFRAME. R ALL THE WELD REPAIRS GIVEN BY THE ENGINE MANUFACTURER ARE FOR R ENGINES OR COMPONENTS IN A WORKSHOP. THERE IS A FIRE RISK IF YOU R WELD ON AN INSTALLED ENGINE BECAUSE OF THE FLAMMABLE LIQUIDS IN R THIS AREA. R
4. Definition of Terms and Abbreviations
_____________________________________ The following terms are used in the maintenance manual and are defined as follows:
NOTE : Notes call attention to methods which make the job easier, or provide
____
supplementary or explanatory information.
R CAUTION : CAUTIONS CALL ATTENTION TO METHODS AND PROCEDURES WHICH, IF NOT R PRECISELY FOLLOWED, POSE A PARTICULAR RISK OF EQUIPMENT DAMAGE. R WARNING : WARNINGS CALL ATTENTION TO METHODS, PROCEDURES OR LIMITS R WHICH, IF NOT PRECISELY FOLLOWED, POSE A PARTICULAR RISK OF R INJURY OR DEATH TO PERSONS. R
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Engine Directional References
Figure 001
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Flange Identification
Figure 002
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A. Defects
The following terms are used to describe/define defects:
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Blister A raised portion of a surface caused by separation of the outer layers of the parent material or of a coating applied to it. BubbleFlakingOxide FormationPeeling Scale
Slag inclusion (weld).
Brittle A change in the elasticity or resilience of the parent material usually caused by aging, extreme cold, chemical action, or Cold worked hard (like anold O-ring).
cold-working.
Buckle A large-scale deformation of the original contour of a part, usually caused by pressure or impact from a foreign object, structural stresses, excessive BallooningBendBulgeCreaseCurl
localized heating, high-pressure differentials, or any combinations of these. Dent (not to be confusedwith small-area defect inheavy material) Depression Distortion
Elongation Fold
Indentation
Kink
Protrusion (hollow) Rupture (result of excessive buckling) Uneven
Warpage Wrinkle.
Burn A rapid, destructive, oxidizing action, usually caused by higher temperatures than the parent material can withstand. Change in color appearance often indicates this condition. Burn-out (missing piece)ErosionCorrosionGutteredHeat-checkHeat deterioration
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Burnishing Smoothing of a metal surface by mechanical action, but without a loss of material. Generally found on plain bearing surface. Surface discoloration is sometimes visible around the outer edges. Normal burnishing from operational service is not detrimental if the coverage approximates the carrying load and there is no evidence of burns.
Burr A rough edge or a sharp protrusion on the edge or surface of the parent material.
Chafing See "Gall" or "Scratch".
Chip A breaking away of the edge of the parent material, usually caused by heavy impact from a foreign object.
Corrosion A mass of small pits which cumulatively create a large, shallow cavity (usually rough in the surface of the parent material).
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