I had a 68 loaf in Alaska - had the CV's greased, and later at some
point in time was cruising down the road when I started getting a
popping noise in the rear and before I could get slowed and stopped all
hell broke loose. There was a heck of a banging in the right rear.   Not
much warning. When I got stopped, I  looked underneath and found all the
bolts out and the axle hanging down on the right side. I flagged a car,
got a lift and ultimately got the thing back running again.

After that episode I determined I was not going to have bolts come loose
again, so I drilled crossways across the bolt heads and after the bolts
were installed, I strung a piece of stainless steel aircraft safety wire
through those holes, so that the wire was aligned in accordance with
aircraft maintenance safety protocols and the bolts were pulled by the
wire in a tightening direction. I was determined those bolts would never
come loose again - and they didn't. Years later, with my 85 GL I
encountered the same problem. And I applied the same fix - at least on
the tranny stub axle flange end of the axle. But i found that the newer
van had a box construction swing arm where the outboard stub axle flange
was buried in the swing arm box. Pretty awkward to safety wire the bolts
there, so i subbed a bit of Locktite on the bolt threads. That seems to
have worked. Never again had any trouble.

Just some tales of CV woes. Take it for what it's worth.

Regards,

John Rodgers
88 GL Driver