TOYOTA ALL MODELS IRON PARTICLE CONTAMINATION REPAIR

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Filed Under (Toyota Manuals) by admin on 28-10-2011

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During rail transportation or extended storage near industrial areas, vehicles may occasionally be subjected to contamination by airborne iron particles shed from either railroad tracks, train wheels, etc., or exposure to heavy machinery facilities. These particles can adhere to horizontal painted surfaces of vehicles and quickly corrode when combined with moisture. If not immediately recognized and removed from painted surfaces, they become embedded and cause further paint damage. INSPECTION: This type of contamination can be identified by the presence of small red or brown particles on the paint surfaces. These particles are often difficult to see on dark color paints, but still can be readily felt when brushing a hand or fingernail across horizontal body surfaces such as hood, roof, or decklid. CAUTION: Because of the abrasiveness of these small iron particles, polishing or buffing procedures should not be attempted to repair the paint surface of an affected vehicle. This will result in further paint damage and detract from vehicle appearance. CORRECTIVE ACTION: Washing the affected paint surfaces with an oxalic acid solution is the recommended method to dislodge embedded iron particles and remove the surrounding rust stains. ZEP X-20472 “INDUSTRIAL FALLOUT REMOVER” is one of several commercially pre-mixed oxalic acid wash solutions and is very effective in removing iron particle contamination. The correct usage of oxalic acid solutions is described in this bulletin

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TOYOTA PREVENTION AND REPAIR OF ACID RAIN DAMAGE ( REVISED)

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Filed Under (Toyota Manuals) by admin on 12-10-2011

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it is the responsibility of the dealer to protect and maintain the quality of the vehicle’s finish after receipt at the dealership. Frequent vehicle washing, up to 4 times weekly during high heat and humidity periods, should be performed to minimize the potential for paint damage due to acid rain exposure. This is especially important in areas known for high frequency and concentration of acid rain and industrial fallout. INSPECTION AND REPAIR: Acid rain damage can frequently be identified on vehicles by the presence of visible spots on the paint surface which resemble hard water stains. Unlike water spots, however, acid rain damage cannot be removed by polishing or buffing only. Because acid rain can etch and soften the paint, normal polishing or buffing repair procedures should not be attempted, as this will result in visible depressions in the paint surface. CORRECTIVE ACTION: The repair of acid rain damaged paint surfaces varies depending on how deep the acid has penetrated. Superficial damage can usually be removed by color-sanding and polishing. If the damage extends to a depth greater than 1/2 mil of the clearcoat on a pearl or metallic color, or more than 1 mil of a solid color, sanding and repainting may be necessary. Unfortunately, there is no simple method of determining the actual extent of the acid penetration other than color sanding a representative affected area until there is no visible etching or depressions and then measuring the amount of paint removed with a magnetic type paint film thickness gauge

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