M/T Shift Fork Clearance Inspection

NOTE: The synchro sleeve and synchro hub should be replaced as a set.
  1. Measure the clearance between each shift fork (A) and its matching synchro sleeve (B). If the clearance exceeds the service limit, go to Step 2 .
    Standard:
    0.35−0.65 mm (0.014−0.026 in.)
    Service Limit:
    1.0 mm (0.039 in.)

1st/2nd, 3rd/4th, 5th/6th:
Reverse:

  1. Measure the thickness of the shift fork fingers.
    • If the thickness is not within the standard, replace the shift fork.
    • If the thickness is within the standard, replace the synchro sleeve.
    • If one arm of the shift fork shows more wear than others, the fork may be bent and needs to be replaced.

    Standard:

    1st/2nd, 3rd/4th, 5th/6th:
    7.4−7.6 mm (0.29−0.30 in.)
    Reverse:
    6.2−6.4 mm (0.24−0.25 in.)


  1. Measure the clearance between the shift fork (A) and shift piece (B). If the clearance exceeds the service limit, go to Step 4 .
    Standard:
    0.2−0.6 mm (0.008−0.024 in.)
    Service Limit:
    0.7 mm (0.028 in.)


  1. Measure the width of the shift piece.
    • If the width is not within the standard, replace the shift piece.
    • If the width is within the standard, replace the shift fork.
    Standard:
    12.8−13.0 mm (0.50−0.51 in.)