CUTTING EDGE 8D2789 - Caterpillar

Scratched Clutch Plates
Remove any sharp edges that have been caused by scratches or nicks by carefully rubbing only the area of the sharp edge with a 6V-2010 Polishing Stone or with 2/0 emery cloth and a solvent. Rub the area until the sharp edge cannot be felt with a fingernail or the lead of a pencil. Put oil on the plate or the surface to prevent rust.Faces of Reaction
Inspect and reuse pistons and other faces of reaction in accordance with Reuse and Salvage Guidelines, SEBF8014, "Identification and Applications of Transmission Clutch Plates and Specifications to machine Reaction Faces for Power Shift Transmissions".Smeared Faces of Reaction
All the F37 and F37X friction material on a smeared clutch plate or any other surface must be removed by a solvent before the plate or the other surface is used again. Duro Naval Jelly that is sold by Woodhill Chemical Sales Corp., which is a division of Loctite Corp. will remove the friction material if the surface is not badly smeared. Also, an equivalent solvent will remove the material. For badly smeared surfaces, use methyl ethyl ketone. The solvent must be used at temperatures from 16 °C (60 °F) to 27 °C (80 °F). Remove the solvent and put oil on the surface.
Personal injury can result from working with cleaning solvent.Because of the volatile nature of many cleaning solvents, extreme caution must be exercised when using them. If unsure about a particular cleaning fluid, refer to the manufacturer's instructions and directions.Always wear protective clothing and eye protection when working with cleaning solvents.
Note: Avoid contact between the solvent and the friction material of a disc assembly. Only use the procedures that are shown in "Scratched Clutch Plates" and "Smeared Faces of Reaction". Any other method can cause rapid wear of the disc assemblies.
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The illustration shows the use of a stone for polishing for the removal of a sharp edge that was caused by a scratch or a nick.
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The illustration shows a clutch plate that is being cleaned with solvent.
USE THIS PART AGAIN.Circumferential Marks
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The clutch plate has circumferential marks that cannot be felt with a fingernail or a lead pencil.
USE THIS PART AGAIN.Discoloration
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The clutch plate has discoloration on the inner diameter. Check the disc for warped areas and dished areas.
USE THIS PART AGAIN.Reuse the plate if warped areas and dished areas are within specifications.
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The clutch plate has discoloration. Check the disc for warped areas and dished areas.
USE THIS PART AGAIN.Reuse the plate if warped areas and dished areas are within specifications.Measurement of Warped Areas and Dished Areas
Remove any rough edges in the area of the slot for the pin.
Put the clutch plate on a flat surface such as a face of reaction on the housing for a clutch, a center plate for a transmission, or a surface plate. If the dished area is obvious, put the plate on the flat surface so the concave side is up.
Measure the gap between the clutch plate and the surface for inspection at