A/T Clutch Inspection
  1. Inspect the 4th and 5th clutch pistons and the clutch piston check valves (A).
  1. If the clutch piston check valve is loose or damaged, replace the clutch piston.
  1. Check the spring retainer for wear and damage.
  1. Check the oil seal (A) on the spring retainer of the 1st, 2nd, and 3rd clutches for wear, damage, and peeling.
  1. If the oil seal is worn, damaged, or peeling, replace the spring retainer.
  1. Inspect the clutch discs, the clutch plates, and the clutch end-plate for wear, damage, and discoloration.
    Standard Thickness:
    Clutch Discs:
    1.94 mm (0.076 in.)

    Clutch Plates
    R20A3 Engine Model:
    1st Clutch (wave-plates):
    1.6 mm (0.063 in.)
    2nd Clutch:
    Wave-plates:
    2.0 mm (0.079 in.)
    2.0 mm-thick
    flat-plate:
    2.0 mm (0.079 in.)
    4.0 mm-thick
    flat-plate:
    4.0 mm (0.157 in.)
    3rd Clutch:
    Wave-plates:
    1.6 mm (0.063 in.)
    Flat-plates:
    1.6 mm (0.063 in.)
    4th Clutch (wave-plates):
    2.0 mm (0.079 in.)
    5th Clutch (wave-plates):
    2.0 mm (0.079 in.)
    K24Z3 Engine Model:
    1st Clutch:
    Wave-plates:
    1.6 mm (0.063 in.)
    Flat-plate:
    1.6 mm (0.063 in.)
    2nd Clutch:
    Wave-plates:
    2.0 mm (0.079 in.)
    Flat-plate:
    2.0 mm (0.079 in.)
    3rd Clutch:
    Wave-plates:
    1.6 mm (0.063 in.)
    Flat-plate:
    1.6 mm (0.063 in.)
    4th Clutch (wave-plates):
    2.0 mm (0.079 in.)
    5th Clutch (wave-plates):
    2.0 mm (0.079 in.)


  1. If the clutch discs are worn or damaged, replace them as a set. If the clutch discs are replaced, inspect the clearance between the clutch end-plate and the top disc.
  1. If any plate is worn, damaged, or discolored, replace the damaged plate with a new plate, and inspect the other wave-plates for a phase difference. If the clutch plate is replaced, inspect the clearance between the clutch end-plate and the top disc.
  1. If the clutch end-plate is worn, damaged, or discolored, inspect the clearance between the clutch end-plate and the top disc, then replace the clutch end-plate.