|Tech Article Title
the Rear Differential Mount
- T50 torx
- T45 torx
- VAG1359/2 universal
- PN: 8A0599133B at minimum, replacing all bolts is a
good idea too.
Overview of area, this will serve as before and
after pic. Clean aluminum thing is the culprit today.
To begin, remove 4
bolts on aluminum crossmember, two are by exhaust and hold exhaust hanger.
Exhausts other than Borla may require removal. YMMV.
and mount are amazingly light.
With crossmember out of
the way, remove four bolts holding mount to diff.
Naked bottom of diff to give
an idea of where the bolts in the previous pic are.
Reason to watch knuckles
is that pesky gas tank strap. It's dull, I knew it was right there, but
the first bolt caught me off guard anyway when it broke loose. Good thing
it was cold out, didn't hurt a bit. Got blood all over though. Lot more
blood when I went inside and unfroze my fingers. :)
Old and new, side by side.
No significant visible damage to old mount, but it was not as stiff as the
in the distant past would allow diff to rub and make scraping noise under
first gear accel. Would also bang occasionally under sudden driveline
load. Here is the mark.
I cleaned the area and
re-undercoated the mark, all I had was 3m black rubberized so it doesn't
match. If you need to do this make sure you cover the diff flange so
excess undercoating spray doesn't knock it out of balance.
Torques as best as I
could decipher from Bentley.
40NM long bolts through crossmember
23NM exhaust mount bolts to body.
50NM mount to
When reassembling, use a jack or
similar AOA approved device to lift the diff and exhaust to the proper
height. DO NOT pull them into place using the bolts, they may strip out if
you are unlucky.