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10-04-2020, 07:42 PM | #1 |
Member
Join Date: Jun 2019
Posts: 33
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Extreme front end wobble
What causes extreme front end wobble when the brakes are applied?
Mark in Fairbanks Alaska |
10-04-2020, 07:50 PM | #2 |
Senior Member
Join Date: May 2010
Location: Glendale, AZ
Posts: 2,952
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Re: Extreme front end wobble
Read the Front Wheel Wobble post from JLpete98 a little farther below
Full of good info on your problem. |
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10-04-2020, 07:52 PM | #3 |
Senior Member
Join Date: Sep 2016
Location: Long Island
Posts: 172
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Re: Extreme front end wobble
Many things could be the cause I would bet kingpin bushings.
But Could be loose lugs, loose drums, misaligned wheels, Loose Spring. |
10-04-2020, 08:46 PM | #4 | |
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Join Date: Mar 2017
Location: southern California
Posts: 725
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Re: Extreme front end wobble
Quote:
I had one a few years ago due to a worn steering box sector shaft bushing. Once I fixed that, all was well. Now the 'Death Wobble" (as its known) has returned. No matter though, I'm was planning a complete front end rebuild soon anyway.
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10-05-2020, 08:47 AM | #5 |
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Join Date: May 2010
Location: Bucks Co, Pa
Posts: 3,740
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Re: Extreme front end wobble
This laughingly called "Death Wobble"! Once you've experienced it you will agree! There can be many causes, such as Wheel bearings, king pins, spring Perch bushings, control arm balls out of round, poor alignment, poorly adjusted brakes, and steering box issues. Start by jacking up the front end and shaking the wheels. If you find looseness, do whatever it takes to tighten it. Vertical looseness is king pins (bushings) horizontal shaking/looseness is wheel bearings or steering linkage. This must be observed while someone does the shaking. Ball Diameter on thermos is 1.000, allowable out of round is .980, or 1.000 minus .020. I tolerate 1" of play in the steering wheel, but specs call for zero. Terry
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10-05-2020, 09:53 AM | #6 |
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Location: Alabama
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Re: Extreme front end wobble
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10-05-2020, 11:09 AM | #7 |
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Join Date: May 2010
Location: Alabama
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Re: Extreme front end wobble
Any other looseness in the front end will also contribute to shimmy after the shimmy begins .
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