Worn-out saddles change in car service or the equipped workshop skilled personnel.
At first the saddle is removed drilling to thickness of material of 0,5 mm, and then vypressovyvtsya. The opening is developed under a saddle of the repair size. The new saddle is pressed in the head heated to 250 °C (striking blows is forbidden).
It is necessary to consider that for each of modifications of the engine the repair sizes of saddles differ and at their selection be guided by data on the catalog. After a press fitting the saddle zenkutsya under the valve head sizes.