MYY6S OUTPUT SHAFT INSPECTION


  1. INSPECT GEAR


    1. A01CJ12

      Using a cylinder gauge, measure the inside diameter of the gear.

      Standard
      Gear Type Standard: mm (in.) Maximum: mm (in.)
      Counter gear 6th 50.009 to 50.025 (1.9689 to 1.9695) 50.065 (1.9711)
      5th gear 44.009 to 44.025 (1.7326 to 1.7333) 44.065 (1.7348)
      4th gear 44.009 to 44.025 (1.7326 to 1.7333) 44.065 (1.7348)
      3rd gear 63.010 to 63.029 (2.4807 to 2.4815) 63.069 (2.4830)
      2nd gear 63.010 to 63.029 (2.4807 to 2.4815) 63.069 (2.4830)
      1st gear 63.010 to 63.029 (2.4807 to 2.4815) 63.069 (2.4830)
      Reverse gear 63.010 to 63.029 (2.4807 to 2.4815) 63.069 (2.4830)

      If the inside diameter exceeds the maximum, replace the gear.

  2. INSPECT OUTPUT SHAFT


    1. A01CIOB

      Using a dial gauge and 2 V-blocks, check the output shaft runout.

      Standard runout
      0.015 mm (0.0006 in.)
      Maximum runout
      0.1 mm (0.0039 in.)

  3. INSPECT SYNCHRONIZER RING


    1. A01CICH

      Inspect the synchromesh mechanism.


      1. Inspect each part of the synchromesh mechanism. If uneven wear or damage is found, replace the synchronizer ring or synchronizer ring set.

    2. Inspect the clearance between the synchronizer ring and the tapered part.


      1. Using a thickness gauge, measure the clearance between the synchronizer ring and the tapered part.

        Standard
        Gear Type Standard Clearance: mm (in.) Minimum Clearance: mm (in.)
        4th, 6th, Reverse 1.30 to 2.60 (0.0512 to 0.1024) 0.5 (0.0197)
        1st, 2nd, 3rd 1.00 to 2.50 (0.394 to 0.0984) 0.5 (0.0197)

        If the clearance is less than the minimum, replace the gear.

  4. INSPECT NO. 2 TRANSMISSION CLUTCH HUB


    1. Check the sliding parts, splines, keys, and key grooves of the No. 2 transmission clutch hub and No. 2 transmission hub sleeve for wear or damage.

    2. A01CHFR

      Measure the backlash in the spline rotational direction on the outer circumference of the clutch hub.

      Standard
      Standard Backlash: mm (in.) Maximum Backlash: mm (in.)
      0 to 0.05 (0 to 0.002) 0.3 (0.0118)

      If the backlash exceeds the maximum, replace the clutch hub.

  5. INSPECT NO. 3 SYNCHROMESH SHIFTING KEY


    1. A01CIYY

      Using vernier calipers, measure the clearance between the No. 3 synchromesh shifting key and No. 3 synchronizer ring groove.

      Standard clearance
      3.46 to 3.76 mm (0.1362 to 0.148 in.)

      If the clearance is not as specified, replace the No. 3 synchromesh shifting key and No. 3 synchronizer ring.

  6. INSPECT TOP-OD SLEEVE AND HUB ASSEMBLY


    1. A01CHZR

      Using a thickness gauge, measure the clearance between the No. 3 synchromesh shifting key and the sleeve and hub assembly (clutch hub).

      Standard clearance
      0.01 to 0.21 mm (0.0004 to 0.0083 in.)

      If the clearance is not as specified, replace the sleeve and hub assembly.

  7. INSPECT TRANSMISSION CLUTCH HUB


    1. A01CIULE01

      Using a thickness gauge, measure clearance A between the synchronizer ring and the transmission clutch hub.

      Standard
      Gear Type Standard Clearance: mm (in.)
      No. 2 transmission clutch hub 4.30 to 4.70 (0.1693 to 0.1850)
      No. 1 transmission clutch hub 4.30 to 4.70 (0.1693 to 0.1850)

      If the clearance is not as specified, replace the synchronizer ring and transmission clutch hub.