Just finished the job and that was a nightmare. It took over 4 hours of hammering to break the extreme corrosion. Just unbelievable how they "engineered" this assembly to be so horrendous. I was actually shocked to see the corrosion builds up because between the mounting pads everything is open. Gonna buy an air hammer for the next one. I hope that will ease the next job.
Also, I have a 600mm breaker bar, that loosened the axle nut with little fuss and also allowed me to TTY the new one, though with a hell of a lot of force, no pipe needed. I suggest prybars on hand to get the axle end back into the housing. I pushed it out of the way to access the backside for hammering.
I used some chisels on the front side, which helped break the corrosion. Half a can of penetrating oil (WD40 penetrating oil, not plain WD40) did nothing, by the way. Whenever a fissure in the corrosion opened, I'd spray into it, see the oil leaking out elsewhere. When I pulled the assembly out finally, I saw the oil didn't even appear to be going very deep at all. I tried hammering to turn the housing and that also did little. It was fraction of a millimeter at a time and feeling out with the chisels that I was getting a gap.
Failure of my bearing was due to failure of the seal. There was grease on the housing that appeared to have been leaking out of the bearing. So, IMO, the bearing itself didn't fail, the seal failed (which are pretty weak anyhow), leading to the failure of the bearing. I hope the SKF replacement is much better, though I noted there are low amounts of drag out of the box, so I would say these are all 60k km throwaway parts.
Anyhow, for the next one, will have an air hammer and hope that helps. Might also consider trying to loosen the bolts a few turns and drive in my garage and turn the wheel a bunch to break the corrosion.
Bookmarks