406 retaining pin keeps breaking

Bear with me. This needs a bit of explaining.

On a 406, there is a large nut right at the end of the drive shaft which
is visible if you remove the wheel trim. There is a hole drilled through
the drive shaft, but the nut itself is not castellated. Instead, there
is a steel pressing that fits over the nut. Finally, there is a pin
which passes through the drive shaft hole and the pressing which
prevents the nut from turning.

Recently, there was a "clinking" noise coming from the front offside
wheel. When I removed the wheel trim, the stell pressing fell out. A
quick look at the other side revealed that there ought to have been a
pin holding it in place. As a temporary measure, I put in a split pin
and got the correct pin from my Peugeot dealer (who initially tried to
convince me that my paticular 406 definitely did not have such a pin).

I fitted the pin and, within a couple of days, it too has disappeared. I
presume that both pins have broken somehow.

Any thoughts guys?

Thanks,

Raymond

 

Have you checked that the nut is correctly tightened? I seem to recall that
it should be torqued at 350 Nm (check this!!).
If the nut is working loose, it might explain why the pin keeps breaking.

Ivar Petur

 

This nut need to be tightened to the correct torque setting before
fitting the retaining pin.

Bob

 

But then again, what's the use of having a pin to keep the nut from
turning when the nut working loose breaks the pin? Seems a pretty useless
pin to me...

greetz!

 

The strange thing is that it's only the Peugeot-made pin (cost ~65p)
that breaks, not the temporary-fix split pin (cost ~10p).

Raymond

 

if its got a hole for a pin it will have to have a pin fitted. try getting
a friend to press the foot brake whilst you try to retighten the
driveshaft nut then replace the castelation cover and pin, straight part
of pin thru hole and curved side around castelation, tap in with small
hammer, derek,