This task shows you how to replace components into an assembly.
In an assembly you may replace:
A component by a component completely different (a jack by a wheel for example).
A component by a component from the same family (a gearbox by another for example).
Both cases the constraints reconnection is only warranted either:
Component product structure is the same.
Instance names of products in the replacing component are the same.
Constraints reference the same published elements:
Select a component in the specifications tree.
in the Product Structure Tools toolbar.