LEMON Manuals: Even more car manuals for everyone
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 >> C3 Clutch Component Inspections

C3 Clutch Component Inspections

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, 2003 Chevrolet Cab & Chassis Silverado, and 2002 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure thickness of each C3 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 the oil groove depth of each C3 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 C3 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 C3 clutch reaction plate (dimension "A") in at least 3 locations. See 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 the reaction plate.
  5. Place C3 reaction plate on a level surface and measure cone of each plate (dimension "A") in at least 3 locations. See Fig 3. 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 each C3 spring plate (dimension "A") in at least 3 locations. See Fig 4. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If spring plate is less than minimum thickness at any point, replace spring plate.
  7. Place C3 spring plate on a level surface and measure the cone of each plate (dimension "A") in at least 3 locations. See Fig 3. Compare measurement to specifications. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If cone is more than specified at any location, replace spring plate.
  8. Measure wear surface thickness of C3 clutch backplate (dimension "C") in at least 3 locations. See Fig 5. 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.
  9. Measure distance from top of thrust washer to bottom of C3 clutch plate inner rim (dimension "A"). See Fig 5. Measure thickness of C3 clutch plate inner rim (dimension "B"). Calculate thickness of thrust washer (dimension "D") by subtracting dimension "B" from dimension "A" (dimension "D" = dimension "A" - dimension "B"). Compare C3 backplate thrust washer inner rim minimum thickness to specification. See MAIN HOUSING MODULE SPECIFICATIONS  table under TRANSMISSION SPECIFICATIONS. If calculated thickness is less than minimum, replace thrust washer.
  10. Place the C3 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 C3 & C4 Clutch Friction Plate Thickness & Oil Groove Depth
G00117109Courtesy of GENERAL MOTORS CORP.
Fig 2: Measuring C3 & C4 Clutch Reaction Plate Thickness
G00117113Courtesy of GENERAL MOTORS CORP.
Fig 3: Measuring C3 & C4 Clutch Reaction & Spring Plate Cone (C5 Is Similar)
G00117117Courtesy of GENERAL MOTORS CORP.
Fig 4: Measuring C3 & C4 Clutch Spring Plate Thickness
G00117121Courtesy of GENERAL MOTORS CORP.
Fig 5: Measuring C3 Clutch Backplate Thicknesses
G00117125Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals