Synchronizer

- Check spline portion of coupling sleeves, hubs and gears for wear or cracks.
- Check baulk rings for cracks or deformation.
- Check insert springs for deformation.




- Measure clearance between baulk ring and gear.

Clearance between baulk rings and gears, for 1st and 4th gear only:
Standard 1.0 - 1.35 mm (0.0394 - 0.0531 in)
Wear limit 0.7 mm (0.028 in)

- 2nd and 3rd gears have inner and outer baulk rings and so have different measurements.




- Measure wear of 2nd and 3rd baulk ring.
a. Place baulk rings in position on synchronizer cone.
b. While holding baulk ring against synchronizer cone as far as it will go, measure dimensions "A" and "B".

Standard:
A 0.7 - 0.9 mm (0.028 - 0.035 in)
B 0.6 - 1.1 mm (0.024 - 0.043 in)
Wear limit: 0.2 mm (0.008 in)

c. If dimension "A" or "B" is smaller than the wear limit, replace baulk ring.