Half shaft replacement - Update, could it be tires?

[Jim Green]

I would agree, I always notice a difference in
vibrations when I rotate tires.
Jim
--- mike mcclurg <rrrrraudi at yahoo.com> wrote:
> Well, there is definitely a difference between the
> left and right half shafts. Got under and measured
> them last night and the right is about 1 inch
> longer.
> Really makes me curious about why Advance Auto
> thinks
> one number fits both sides.
> 
> Also, someone suggested that axial free-play may not
> mean that the shaft is bad. Made me curious so I did
> some more investigation. Turns out that the
> free-play
> is only noticeable when the wheel is in the air, not
> when suspension is normally loaded. When I put the
> car
> up on ramps, there is no free-play. Now I am
> starting
> to wonder if it is a tire thing. Actually, this
> vibration started after I rotated the tires. I had
> previously understood that you were not supposed to
> rotate radials from one side to the other, just
> front
> to back. However, lately I’ve been told that modern
> radials no longer have problems in being rotated
> side
> to side, so guess what I did? Yep, swapped fronts
> side
> to side and rears the same way. Who’s right?
> 
> Guess I will swap them back and see if the vibration
> goes away, or is it already too late?
> 
> Still searching for an answer,
> Mike
> 
> 
> > > mike mcclurg wrote:
> > > 
> > > > Patient is an '89 100q. Have been noticing
> > > > increasingly worse vibration from front.
> Already
> > > > replaced tie rod ends. They were bad. Still
> had
> > > > vibration. Now notice that the left half shaft
> > has
> > > > about 1/8 inch of free play lengthwise. Is
> this
> > > bad,
> > > > or rather how bad is this?
> > > > Figure it is best to replace the whole half
> > shaft.
> > > $97
> > > > exchange through Advance Auto.
> > > > Couple questions:
> > > > 1. The guy at the counter shows me the screen
> > and
> > > both
> > > > left and right are the same. Family Album
> shows
> > a
> > > > difference of exactly one in the parts code.
> Are
> > > they
> > > > truly the same, or close enough that one can
> fit
> > > > either side?
> > > > 2. Do I simply have to loosen/remove the big
> > bolt
> > > on
> > > > the end of the axle, then loosen/remove the
> > > > triple-square headed bolts at the other end
> and
> > > then
> > > > the shaft will come out? Bentley is not clear
> at
> > > all.
> > > > Oh yeah, I did read the note that says not to
> > roll
> > > the
> > > > wheel with the axle out.
> > > > 3. What is the size of the triple-square? Best
> > > place
> > > > to find them?
> > > > Thanks in advance,
> > > > Mike
> > > >
> > > >
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