machine is slowly reversed, thus pulling the protection chain
over the wheel until the end come together.
Tension chain is tightened using the rachet lever hoist.
two ends are joined by means of repair rings.
After it is tensioned sufficiently (with a small bag in the
forward direction) the end of the tension chain is passed
through the guide rings fastened to one of the tension rings,
using a shackle. Drive vehicle/machine forward and backward
and re-tension if necessary.