Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Camry 1994.2002-2007 Approved Toyota Camry 2007 Hybrid 50 introduc precauti

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IN-10             INTRODUCTION


                 PRECAUTIONS FOR REPAIRING BODY
                 STRUCTURE PANELS



                 1.   HEAT REPAIR FOR BODY STRUCTURE
                      PANELS
                      Toyota prohibits the use of the heat repair method on body
                      structure panels when repairing a vehicle damaged in a col-
                      lision.
                      Panels that have high strength and rigidity, as well as a long
                      life span for the automobile body are in high demand.
                      At Toyota, in order to fulfill these requirements, we use high
                      tensile strength steel sheets and rust preventive steel
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                      sheets on the body. High tensile steel sheets are made with
                      alloy additives and a special heat treatment in order to im-
                      prove their strength.
                      To prevent the occurrence of rust for a long period of time,
                      the surface of the steel is coated with a zinc alloy.
                      If body structure parts are heat repaired with an acetylene
                      torch or other heating source, the crystalline organization of
                      the steel sheet will change and their strength of the steel
                      sheet will be reduced. The ability of the body to resist rust is
                      significantly lowered as well since the rust resistant zinc
                      coating is destroyed by heat and the steel sheet surface is
                      oxidized.


                 2.   STRUCTURE PANEL KINKS
                      A sharp deformation angle on a panel that cannot be re-
                      turned to its original shape by pulling or hammering is
                      called a kink.
                      Structural parts are designed to perform in their original
                      shape. If parts are deformed in an accident, or if the de-
                      formed parts are repaired and reused, the parts may be un-
                      able to perform as intended.
                      It is necessary to replace the part where the kink has oc-
                      curred.
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          INTRODUCTION                                                IN-11

         3.   IMPACT BEAM REPAIR
              The impact beam and bracket are necessary and important
              parts that help reduce the probability of injury to passen-
              gers in side collisions.
              For impact beams, we use special high tensile strength
              steel.
              The high tensile strength steel maintains its special crystal-
              line organization by heat treatment or alloy additives.
              Structural parts are designed to perform in their original
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              shape. If parts are deformed in an accident, or if the de-
              formed parts are repaired and reused, the parts may be un-
              able to perform as intended.
              If the impact beam or bracket is damaged, replace the door
              assembly that has the damaged beam.
              Also, the bumper reinforcement is a necessary and impor-
              tant part that helps reduce the probability of injury to pas-
              sengers in front collisions, and for the same reasons ex-
              plained above, should be replaced if damaged.



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