Check for the presence of aligned marks on the hub and sliding sleeve of the synchronizer and, if not, mark.
Remove the sliding sleeve from the hub
Take out three crackers
Remove the two springs from the hub.
Lubricate the synchronizer parts with a thin layer of gear oil.
Install one spring into the synchronizer hub.
Install crackers in the synchronizer hub.
Install the sliding sleeve on the hub according to the marks.
Install the second spring so that the bent ends of both springs are in the same crack, and the coils of the spring are directed in different directions.
Check the ease of axial movement of the synchronizer parts.
The side clearance between the hub and the sliding sleeve should be within 0.0 1-0.05 mm.