The persistent bearing is replaced in case its wear on height reached more than 1 mm.

At a gap it is less than 1 mm between the top lug of a fist and a lug of a beam steel laying of the corresponding thickness is established.

For replacement of the persistent bearing and installation of adjusting laying it is necessary to execute operations in the sequence specified for replacement шкворня and after the pivot axle is beaten out from a zone of the persistent bearing in the beginning, to remove the worn-out bearing together with a protective cap.

To put into place the new bearing, to raise a rotary fist before dense pressing of the bearing to a beam, to measure by means of the probe a gap between the top lug of a fist and a lug of a beam. If the last exceeds 0,15 mm, to establish adjusting laying in a gap. Further to collect an axis in the sequence, the return dismantling.