Fig. 155. Backlash definition between loose leaves of radical bearings and necks of a cranked shaft

You can measure a radial backlash between loose leaves of radical bearings and necks of a cranked shaft the special tool for measurement of backlashes in bearings of sliding in the form of a plastic thread (fig. 155). Thus measured details should be without oil.

Backlash measurement spend in the following sequence:

- Put a piece of a plastic thread on the loose leaf in the block of cylinders along an axis;

- Establish a cranked shaft in the block of cylinders;

- Establish a cover corresponding to the checked bearing, and tighten bolts of fastening of a cover the necessary moment. Thus it is not supposed to strike on a cover and to turn a shaft;

- Turn away bolts of fastening of a cover and remove it;

- Put a template to the flattened out thread, its width will correspond to backlash size;

- Repeat process with all other bearings.