Date: Fri, 07 Mar 2003 18:13:47 -0700
From: "ynotink" <ynotink@qwest.net>
To: lro@koan.team.net
Subject: Re: [lro] Violent Steering Shake
Reply-To: lro@land-rover.team.net
>I vote for the panhard rod bushings.
It could be these bushings. However, I've learned that when they
wear out or get sloppy, the symptom is not violent shaking, but a slight
directional change in the vehicle when you accelerate or decelerate. This
is because the torque being transmitted to the axle tries to pivot the
axle. This force is countered by the rods and their bushings. When the
bushings wear out, the torque change caused by acceleration or deceleration
pivots the axle a bit, and the front (or rear) tracks to one side for a
moment. In the back, it's a bit like rear-wheel steering. Not
particularly dangerous unless you let it get way out of hand, but
definitely disconcerting.
This happened to our Range Rover after about 50K miles, and at the same
time I just happened to read in Land Rover Owner magazine an article by a
manufacturer of aftermarket suspension parts in the UK about this exact
phenomenon and what caused it. So I ordered a set of their bushings,
installed them, and almost 100K miles later we have yet to have the problem
return. Unfortunately, this manufacturer no longer seems to be in
business, so I assume their "special" bushings, which they made by mofiying
factory bushings, are no longer available.
The rest of the suspension bushings on our '91 are all original, alhough I
have a set of new bushings to install someday-I know the vehicle will
benefit greatly from getting new bushings, but it's a time issue. We did
have some wandering and occasional steering shake problems awhile back, but
that turned out to be a worn tie rod end, which I replaced as that was
getting potentially dangerous.
I would assume that the same symptoms would apply to the Discovery SI and
the coil-spring Defender- I believe they all share more or less then same
components and geometry as the Range Rover classic.
________________________
C. Marin Faure
(original owner)
1973 Land Rover Series III-88
1991 Range Rover Vogue SE
Seattle, WA
marin.faure@boeing.com
faurecm@earthlink.net
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