This is the stuff john's talking about
:
Loctite 640:
http://www.henkelna.com/product-search-1554.htm?nodeid=8797924524033
Typically used as a failsafe method to ensure press fit assemblies never come apart unintentionally/ peace of mind if your tolerances are not perfect. Its meant to retain the non rotational component of the bearing- good design practice always constrains the outer race to whatever holds the bearing, and a clamp up method is used to constrain the inner race to whatever moves in order to ensure that the moving part of the bearing does its job. You never want the outer race turning in its mount, or the inner race turning on the through bolt. From what I can tell this assembly would use the retaining compound.... while the bearing is constrained by the snap rings into the housing (it would never fall out), if the whole thing heats up (rear mounts near engine can get pretty warm), the AL housing may expand (faster than the steel bearing OD btw) enough to warrant concern about the press fit being tight enough.