It can be extremely difficult to knock out pressed-in bearings without a special puller. If you do not plan to buy such a tool, then it can be made from scrap materials. With it, the bearings are removed in a matter of minutes.
Materials:
- old valves – 2 pcs.;
- M14-M16 bolt with nut;
- plate or strip with a cross section of 10 mm.
Puller manufacturing process
The ends of the valve stems need to be ground into hooks.
They should fit between the bearing balls and, when turning, cling to the grooves on the races.
On both valves, part of the plate is cut off from the side of the sharp edges of the hooks.
Thus, if you insert such a tool between the bearing balls, then, guided by the cut, you can unscrew the hook so that it catches on the grooves on the cage.
Next, the pistons are captured by a squeezing mechanism. It is a bolt with a pointed end and a nut. A plate with eyes for hooking the valve plates is welded to the latter. When tightening the bolt, the plate will drag the hooks along with the bearing.
