Gear Components

Gear Components / INSPECTION









Gears and Shafts
Check shafts for cracks, wear or bending.
Check gears for excessive wear, chips or cracks.






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

Check shifting inserts for wear or deformation.
Check insert springs for deformation.







Measure wear of main drive, 1st and OD baulk rings.
If the clearance is smaller than the wear limit, replace baulk ring.
Measure wear of 2nd and 3rd baulk rings.







1. Place baulk rings in position on synchronizer cone.







2. While holding baulk rings 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 inch)
B.................................0.6 - 1.1 mm (0.024- 0.043 inch)

Wear limit:........................0.2 mm (0.008 inch)

If dimension "A" or "B" is smaller than the wear limit, replace outer baulk ring, inner baulk ring and synchronizer cone as a set.






Measure wear of reverse baulk ring.

a. Place baulk ring in position on reverse cone.
b. While holding baulk ring against reverse cone as far as it will go, measure dimension "A" with dial indicator.

Dimension "A":
Standard.........................0.35 to 0.95 mm (0.0119 to 0.0295 inch)
Wear limit..........................1.1 mm (0.043 inch)

c. If dimension "A" is larger than the wear limit, replace baulk ring.







Bearings
Make sure bearings roll freely and are free from noise, cracks, pitting or wear.