Precision Engine Machine Lock-In Tools - A Better Way

The tool for round wire locks is much simpler. Instead of a groove cut into the body of the tool, it uses a die to help press the round wire in place.

Begin by placing the retainer clip in the back side of the piston, as before, and installing your rod and wristpin. In this photo, the wire lock has been painted red to make it easier to see. Position the lock so that one end is in the groove. All you have to do is place it there; you do not have to force anything.

Now, press the Lock-In-Tool in place on the same angle as the wire lock.

Begin working the tool around as you press down, beginning with the end that is already in the groove. Slowly work the wire lock into the groove. By pushing down on the handle and pivoting it, you should be able to work the lock completely into the groove.

Again, you should be able to feel when the lock pops fully into place. Check to make sure it is seated, pull the retainer clip from the opposite side of the piston and install the lock on that side to complete assembly of that rod and piston.