Re: forward bearing housing "roller bearing"
When replacing it, be careful and do not just press it in.
Heat the housing in an oven to about 150 C, 'freeze' the bearing (use a small CO2 fire extinguisher), then just drop the bearing in.
If old one just pulled out and new one pressed in, the new may start spinning in the housing.
Same method to be applied on the top crankshaft bearings that officially are only available as complete unit at killing price.