Is it safe to come out now? ;-)
Without debating the relative merits of various fastener types, I'm
still not clear on the original thing I asked about, namely what keeps
the half shafts in place!
As far as I can see, when we removed the wheel, then the brake drum had
one screw holding it to the half shaft, right? Brake shoes & springs
were removed, then finally the wheel cylinder. As my son was removing
the wheel cylinder, he snagged the half shaft flange which slid out a
few inches...
So here's what I don't get - since the wheel lugs are in the half shaft
flange, what holds the whole thing (road wheel, brake drum & half shaft)
in place?
Marc
derf wrote:
> OK, there is a difference. But, I contend that you can use a Phillips
> screwdriver on them. Also, even if you do use the "correct" driver,
> it will "invariably destroy the screw head" after 10-12 torquings, or
> sooner if you apply too much torque.
> You can certainly get more torque on a Posidrive, but the application
> stated doesn't need so much torque. I generally cheat on removal of
> those things anyway and use a 3/8" impact wrench with the "proper"
> tip.
> I didn't want to start an argument on this but I don't want people to
> think they have to go hunting for a special screwdriver if they just
> want to do a brake job. The two Posidrive screws just keep the seals
> in place when you remove the wheel and brake drum and the one just
> keeps the brake drum in place if you remove the wheel. Once the lugs
> are tightened the Posidrives aren't critical and aren't even useful
> until you remove the wheel.
> If you're a fastener snob then you'll want to replace them with Torx
> drive screws anyway. Do they make a 1/4-28 flat head TorX? Isn't
> that a 1/4-28 screw?
> Cheers,
> Derf
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