RE: [Chrysler300] 300D Vibration Update

[<john_nowosacki@xxxxxxxxxxx>]

I once had a vibration issue that I accidentally caused when I owned a 61 Newport and a 62 300 Sport.  Both had 14" wheels, but the 62 300 had 12x2 ½ brakes and the Newport had smaller brakes.

For whatever reason, I had moved the Newport drums/wheels to the 62 300 and the more 'shallow' rims from the 61 distorted the rear drums on the 62 and caused quite a vibration.

I switched things back and all was well again.

 

John Nowosacki

978-681-2219

 

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________________________________

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Warren Anderson
Sent: Thursday, June 18, 2009 12:24 PM
To: chrysler300@xxxxxxxxxxxxxxx; pennsy300@xxxxxxx
Subject: Re: [Chrysler300] 300D Vibration Update

 






If the troublesome vibration had transferred completly from the D to the F that would be a good indication that there is a D tire/wheel issue. But it didn't, as I read. And, you now have other issues with the F.

As to the F' Brake vibration is most likely in the brakes. An out of round drum most likely.

I have very recently and multiple times in the past encountered bent hubs. They were bent during the wheel stud removal/replacement process required when a brake drum is replaced. Proper tools to do this obsolete job can be hard to find. This will bring about all your described problems. 

Tires not centered and seated properly on the hub and then over tightened and/or tightened unevenly will cause all of the problems you have outlined and back to your first post.. It is always best to make sure that the hubs are running true and that all threaded wheel fasteners are in good condition or best yet, brand new. 

Hand torqueing wheels is always recommended. All wheels leaving my shop are hand torqued to factory spec for no other reason than to avoid creating the very problems your are having. 

I have succesfully balanced brake drums for older cars off the car using a now really obsolete piece of equipment; bubble wheel balancer.

Warren Anderson
Sedona,AZ

You described moving tires around. If you really mean tires and not wheels and tires moving together then the mounting/balancing operation of course introduced another variable./WRA

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