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RE: Wheel Shake

To: "'Jen/Scott'" <jsloan798@earthlink.net>, tigers@autox.team.net
Subject: RE: Wheel Shake
From: Dave Munroe <dave@munroe.ca>
Date: Tue, 04 May 2004 10:02:01 -0300
Scott;

Almost certainly you have a problem with your wheels/tires. The problem
could be exaggerated by worn suspension or steering components. But
other, more subtle, problems could make your wheels shake the fillings
out of your teeth.

A logical approach to diagnosis would be to first visit you favourite
tire balancing shop. If you have wire wheels, you will need to visit a
specialist who has the equipment to check them for concentricity, wobble
and spoke tightness, as well as mount them on a balance machine. 

Tires also can develop problems with their belts that can break or
bruise and swell to cause this wobble effect. A Road Force Variation
(RFV) balance machine will turn up this deficiency in short order, but
don't let them do this test on your wire wheels! Most of them are only
good for 900# of weight, and the RFV machines put approx. 1500# of force
on the tire.

Assuming your wheels are properly true and balanced, and you still have
the wobble, I would next check in order:
1/ wheel bearing adjustment
2/ upper and lower ball joints
3/ fulcrum pins for wear, looseness, or worse, breakage
4/ steering rack inner ball joint slack
5/ steering column universal joints
6/ drive shaft universal joints

Once you have all the mechanicals checked and proven sound, an alignment
check is in order. In particular, have the castor checked. This is the
measurement that if incorrect, could provoke the "shopping cart" wobble
you seem to have described.

Bets of luck. This problem plagues many of our cars, and is often very
difficult to correct, if it is much more than a simple wheel true and
balance problem.

Dave 
  


-----Original Message-----
Subject: 


What it does is at higher speeds, about 40mph+ the steering wheel shakes
pretty bad, and as I accellerate it seems to get worse. When I really
lay down the gas, it shakes like crazy ...............





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