Lee, Another possibility that happened to me...A failed or failing shock
(lever type). I had a sharp clunk when changing direction between first and
reverse. Turned out to be a shock.
Darrell Ramsey
-----Original Message-----
From: 6pack-bounces+dramsey11=alltel.net@autox.team.net
[mailto:6pack-bounces+dramsey11=alltel.net@autox.team.net] On Behalf Of Lee
Daniels
Sent: Tuesday, September 09, 2008 9:47 PM
To: 6pack@autox.team.net
Subject: [6pack] The TR6 rear-end clunk
I asked this of the Triumphs list and response was, well, underwhelming (one
response to me only, none to the list). But this is really bugging me, and
I'm
trying to keep my driver on the road. If I end up pulling the whole rear end
I'm going to be off the road for a while. Here goes:
Last year I picked up my second TR6 ('74) and have been using it as my
driver.
Good, not great condition, but runs great and looks really great from 20
feet.
I've got a pretty substantial clunk when I apply power in reverse. So Sunday
I
climbed underneath and checked out the differential mountings. Looks like
the
P.O. has already been there, new rubber mounts and no obvious cracks. The
case
looks like it was cleaned and maybe painted within the last thousand miles.
So
I started moving things around by hand (rear wheels in the air i.e.
jackstands
rear and wheels chocks front, parking brake off). Here's what I found, and
my
questions:
1. So how much backlash should there be in the diff? I.e. rotate one wheel,
other one fixed, then reverse direction - I've got maybe 5 degrees of play
here.
2. What about the u-joints? One axle has a wee bit of play in the u-joints -
should they be almost completely without lash?
3. It feels like there may be some play in the axle splines on one side -
how
much is allowable here?
4. If there is a problem with the diff mounts, would I be able to detect it
without pulling the diff first?
I've got 6 or 8 spare new u-joints, so pulling the axles out and refreshing
those would be "easy" (sort-of) for starters.
Note that I've got wire wheels, but I started there and see that they seem
tight and without play.
Thanks,
Lee
'74 Maple TR6 (never-ending restoration)
'74 Pimento TR6 - daily driver
The Woodlands, TX
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