The nominal design gap is 0.036–0.086 mm. If it is less than the limit (0.1 mm), you can use these earbuds again.
If the gap is greater than the limit, replace the liners on these necks with new ones. If the crankshaft journals are worn out and are ground to a repair size, then replace the liners with repair ones (increased thickness).
Thickness of shells of connecting rod bearings, mm
Rated | enlarged (repair) | |||
0,25 | 0,50 | 0,75 | 1,0 | |
1,723 | 1,848 | 1,973 | 2,098 | 2,223 |
1,730 | 1,855 | 1,980 | 2,105 | 2,230 |
The numbers 0.25, 0.50, etc. indicate the amount of reduction in the diameter of the crankshaft journals after grinding.