Thread: Need diagnostic help on SEVERE steering wheel shake

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Originally Posted by Bug

Any updates yet????

Bug

Decided to focus on the brake issue, looked at the piston in the booster, which was cantered, so have torn out the entire braking system, rewelding the frame to support a new bracket to hold the booster/MC combo in a straight line and will replumb with new proportioning valves etc. since I'll have most of the main system out. I have new brake lines & houses, a new vacuum pump assembly and new rotors on my workbench to be put in over the weekend or so.

I believe the issue was to the most degree related to an improper install of the new booster system which, based upon bluing on the front right side rotor, must have been causing an intermittent seizure of the brakes up front (tighten/loosen/tighten). Not certain if the booster refused to release vacuum or whether the brake hoses refused to release fluid when my pressure was removed.

It's interesting that I wasn't really able to get to this point until the brakes completely seized after a buddy of mine adjusted the booster piston in the incorrect position, which seized the brakes completely once I depressed the brake peddle!

Once I attack the braking system, I'll have to see where we are.

I have scheduled an appointment at an "old time" front end shop to have them adjust the alignment manually... but I need to resolve the seized up front brakes first.

More next week!

all I can add to this is on my model A being so short with a great rake, Caster did it for me, as well as a little toe in, as of now I can't give an exact caster or toe in specs, as although it was done on a newer 4 wheel machine it was far beyond anything it could read. and was done old school and now can drive at speed, and I mean thru rain puddles etc. hope all works out well for you. p.s. from the beginning the people in the know on this site sent me in the right direction. and caster and toe was the main. so thanks all. oh yea another thing if the calipers where hung by the hoses or just twisted the wrong way, well guess what the pistons will not retract and will for a simpler explanation stick/stuck. please ask me how I know this. Ouch....so in my view you have a double problem, which can only be cured by fixing the braking issues, and then the correct as your chassis requires alignment. look don't take my word on this as I am just learning, just makes scene to me. Brian Phat after rereading I think I am on the same page as you, I would love to be able to put another 2 degrees caster, but as you say I would have to cut it out, maybe I can just bend it LOL