Martin, yes the trailing arm is aluminum. Dont feel bad, I discovered a
stripped one when I took mine apart. After I fixed it, I later discovered some
of the others wouldnt take the torque either and eventually stripped. You can
replace yours with a heli-coil for your 5/16 stud. You will need the right
drill, tap, tap handle, alcohol (coolant), and an insertion tool. I believe I
used a bottoming tap (threads down to the bottom of the tap). Apply alcohol as
a coolant during tapping. Once the coil is in, be sure to break the tang off.
If you have the trailing arm off the car, consider heli-coiling all the holes.
My hardware store sold the coils in a box of 12, exactly the number required
for both arms. The heli-coils offer a stronger interface since the heli-coil
diameter is larger than the original stud. But its probably best to do this
with a drill press to get all the holes straight, and also be careful to
maintain alignment during tapping. When its done, you should increase the nut
torque by about 10%, again due to larger effective diameter.
John
Martin wrote:>
I've stripped out the two of the threaded holes for the studs that hold
the half-shaft/bearing assembly to the housing behind the brake pads.
(There are six studs in total here.) I don't know what to call this part
of the car, but you get the idea.
I suspect this part of the car is aluminum, no?
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