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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 471 (Automatic Transmission - Overhaul - ALLISON) >> Component Disassembly & Reassembly >> Ring Gear & Clutch Component Inspections >> C5 Clutch Component Inspections

C5 Clutch Component Inspections

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  1. Measure thickness of each C5 clutch friction plate (dimension "A") in at least 3 locations. See Fig 1. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If friction plate is less than minimum thickness at any point, replace friction plate.
  2. Measure oil groove depth of each C5 friction plate (dimension "B") in at least 3 locations. See Fig 1. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If oil groove depth is less than minimum specification at any point, replace friction plate.
  3. Place friction plate on a level surface and measure cone of each plate (dimension "C") in at least 3 locations. See Figure. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If cone is more than specified at any location, replace friction plate.
  4. Measure thickness of each C5 clutch reaction plate (dimension "A") in at least 3 locations. See Figure and Fig 2 . Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If reaction plate is less than minimum thickness at any point, replace reaction plate.
  5. Place reaction plate on a level surface and measure cone of each plate (dimension "A") in at least 3 locations. See Figure. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If cone is more than specified at any location, replace reaction plate.
  6. Measure thickness of the C5 clutch backplate (dimension "A") in at least 3 locations. See Figure and Fig 3 . Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If backplate is less than minimum thickness at any point, replace backplate.
  7. Place backplate on a level surface and measure cone of backplate in at least 3 locations. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If cone is more than specified at any location, replace backplate.
Fig 1: Measuring C5 Clutch Friction Plate Thickness & Oil Groove Depth
G00117141Courtesy of GENERAL MOTORS CORP.
Fig 2: Measuring C5 Clutch Reaction Plate Thickness
G00117145Courtesy of GENERAL MOTORS CORP.
Fig 3: Measuring C5 Clutch Backplate Thickness
G00117149Courtesy of GENERAL MOTORS CORP.
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