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Subject:Re: . . . & Those Damn Shear Bolts
From:MF
Date:Thu, 22 Mar 2001 21:57:59 -0500

Actually, you can remove the entire lock assembly without removing the
"shear bolts", with no special tools.  Remove steering wheel, remove wiring,
remove plastic covers, remove clamp bolt, insert key , turn lock, Done...

I was also told these are for tamper resistance, not Anti-theft, just tamper
resistant. Being steering is rather critical....

my .02

Matt
----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, March 22, 2001 10:28 AM
Subject: Re: . . . & Those Damn Shear Bolts

> Dropping the column allows you to drill the hole into the steering lock
> assembly so you can remove the lock cylinder.  You can remove the entire
> steering lock without dropping the column, but this now requires
> considerable work and special tools to replace (and you still have to
drill
> the hole to get the lock cylinder out).
>
> Another point to consider: if the shearing heads are to control install
> torque, why work so hard to make them difficult to remove
> afterwards?  Furthermore, *what purpose* in engineering terms would this
> accomplish?  If the bolts themselves are designed to shear off in a
> collision (and just what sort of collision would apply shear forces to
> these largely-vertical bolts?), what does the install torque have to do
> with it?  That should be controlled by the material of the bolt
> itself.  Furthermore again, shear pins are ordinarily installed in very
> close-fitting assemblies, not in a mounting point where one of the parts
> accommodates a range of mounting positions.  All right, here's a
> counter-point -- suppose that the object of the exercise is to tighten the
> bolts only loosely, so that the bracket can slide if needed so as to bring
> the shearing edge in contact with the bolt?  And by the way, does anybody
> know at what torque these things actually break off (the 6-mm hex-socket
> part, that is)?
>
> david
>
> At 10:59 PM 3/21/2001, Rico Sapolich wrote:
> >Scott,
> >
> >There is one obvious fallacy in saying that the steering column shear
bolts
> >are an antitheft measure: the shear bolts do not retain the steering lock
> >housing.  Removing the shear bolts does allow the steering column tube to
> >fall away from the dash, but the steering lock remains firmly attached.
Now,
> >I suppose a determined thief may see this as an opportunity to substitute
an
> >unlocked steering column in toto, but I doubt it.
>
> David Beierl - dbeierl@attglobal.net
>