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

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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