It is possible to adjust the handwheel, where the bearings are broken, and this is the transmission mechanism of the big action, you can let the manufacturers to repair. It is estimated that the bearing at the regulating point should be replaced. Because when in operation will have to force transmission to adjust the handwheel, so there will be axially swing therefore may cause axial thrust bearing or roller bearing cone crusher, if broken, it may be due to friction heat, but also increases the amplitude of swing.
Try changing the handwheel! It's possible to change the handwheel!
You should be a larger plunger pump, the pressure is still relatively high. It may be that the middle structure of the follower is somewhat eccentric and causes the adjusting handle to rotate or sway on its own. In general, the big adjustment handle should have a locking screw
