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.) 

1st/2nd, 3rd/4th, 5th/6th: 

Reverse: 

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:
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.) 

 

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

Standard: 0.2-0.6 mm (0.008-0.024 in.) 
Service Limit: 0.7 mm (0.028 in.) 

 

4.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.)