Clutch Plate Diagnosis

Automatic Transmission - 10L80 MHS MQC | Diagnostic Information and Procedures | Document ID: 5066961 Composition Plates Dry the plates and inspect the plates for the following conditions: Pitting Flaking Delamination—splitting or separation of bonded clutch material Wear Glazing Cracking Charring Chips or metal particles embedded in the lining Replace a composition plate which shows any of these conditions. Steel Plates Wipe the plates dry and check the plates for heat discoloration. If the surfaces are smooth, even if color smear is indicated, you can reuse the plate. If the plate is discolored with heat spots or if the surface is scuffed, replace the plate. Causes of Burned Clutch Plates The following conditions can result in a burned clutch plate: Incorrect usage of clutch or apply plates Engine coolant or water in the transmission fluid A cracked clutch piston Damaged or missing seals Low line pressure Valve body conditions – The valve body face is not flat. – Porosity is between channels. – The valve bushing clips are improperly installed. – The checkballs are misplaced. The Teflon® seal rings are worn or damaged.