Originally Posted by dislexeea2
What is excessive slop? On my cars I would consider anything I could actually feel scary.Any slop seems to result in a harmonic shimmy at some speed (and at some sort of multiple).
Good morning !
Well on the older hubs, there was quite a bit of rotation of the spindle
nut "the big nut that holds the hub on the spindle" between positions that the cotter key could be inserted. This would inevitably lead to having to decide whether to put some preload on the bearings or leave them a bit loose. My dear old Grandpa ,who was a heavy equipment mechanic for many years from the twentys forward and owned his own automotive shop during the great depression , taught me to go with a bit of looseness in the hub and never tighten them past the point of all the slop being gone. He was adamant in the belief that doing so would inevitably burn the bearings out. Remember this knowledge came from the era when autos and trucks
almost always had slop in the steering wheel and were herded down the road unlike modern stuff with tight responsive steering.
I personally used his method all my life on hubs and wheel bearings and usually always drove and pulled very old vehicles and trailers .
And I can say that never in my life have I had a wheel bearing fail on anything , ever.
I have gleaned enough information about the subject in later years to conclude that a bit of preload on bearings now days is perhaps preferable to loose bearings.
Most shops and manufactures are pretty stingy with the amount of grease they put in wheel bearings and hubs and I prefer to literally fill em up. Just me , but so far so good.
I did find a bad bearing on an old 40 something tandem axle trailer I went to bring home up in Colorado years ago . It would have fallen off on the way home had I just aired up the tires and left.
Have a safe trip !