DIRECT CLUTCH INSPECTION


  1. INSPECT PISTON STROKE OF DIRECT CLUTCH


    1. A01BBQ8

      Place the direct clutch assembly onto the O/D support assembly.

    2. A01BHW9E01

      Using SST and a dial indicator, measure the direct clutch piston stroke while applying and releasing compressed air (392 to 785 kPa, 4.0 to 8.0 kgf/cm2, 57 to 114 psi).

      SST
      09350-30020   ( 09350-06120 )
      Piston stroke
      1.37 to 1.60 mm (0.0539 to 0.0630 in.)

      If the piston stroke is less than the limit, parts may have been assembled incorrectly, so check and reassemble again.

      If the piston stroke is outside the standard, select another flange.

      Tech Tips

      There are 8 different thicknesses for the flange.

      Flange thickness:
      No. Thickness No. Thickness
      53 3.3 (0.130) 57 3.7 (0.146)
      54 3.4 (0.134) 58 3.8 (0.150)
      55 3.5 (0.138) 60 4.0 (0.157)
      56 3.6 (0.142) 62 4.2 (0.165)

  2. INSPECT DIRECT CLUTCH FLANGE


    1. A01BAWOE01

      Check if the sliding surfaces of the disc, the plate and the flange are worn or burnt. If necessary, replace them.

      Tech Tips

      If the lining of the disc is peeled off or discolored, or even if only a part of the printed numbers is corroded, replace all discs.

  3. INSPECT DIRECT CLUTCH RETURN SPRING SUB-ASSEMBLY


    1. A01BEME

      Measure the free length of the spring together with the spring seat.

      Standard free length
      21.32 mm (0.8394 in.)

  4. INSPECT DIRECT CLUTCH PISTON SUB-ASSEMBLY


    1. A01BE0Z

      Check that the check ball is free by shaking the piston.

    2. Check that the valve does not have leaks by applying low-pressure compressed air.

  5. INSPECT DIRECT CLUTCH DRUM SUB-ASSEMBLY


    1. A01BAAA

      Using a dial indicator, measure the inside diameter of the clutch drum bushing.

      Maximum inside diameter
      53.99 mm (2.1256 in.)

      If the inside diameter is greater than the maximum, replace the clutch drum.