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 2.

Standard: 0.35-0.65 mm (0.014-0.026 in.) 
Service Limit: 1.0 mm (0.039 in.) 

 

2.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: 7.4-7.6 mm (0.29-0.30 in.) 

 

3.Measure the clearance between the shift fork (A) and the shift arm (B). If the clearance exceeds the service limit, go to 4.

Standard: 0.2-0.5 mm (0.007-0.020 in.) 
Service Limit: 0.62 mm (0.024 in.) 

 

4.Measure the width of the shift arm.

  • If the width is not within the standard, replace the shift arm.
  • If the width is within the standard, replace the shift fork and shift piece.

Standard: 16.9-17.0 mm (0.665-0.669 in.)