Miata Mailing List: August 1994, Message #230
sponsored by



     


   From: 
Subject: (none)
   Date: Mon, 8 Aug 1994 08:49:38 -0400

	id m0qXUHF-0007xkC; Mon, 8 Aug 94 08:58 EDT
Message-Id: 
From: mjb@vince.arl.mil (Matthew J. Bennett)
Subject: Re: Bum Dealers
To: miata@jhunix.hcf.jhu.edu
Date: Mon, 8 Aug 1994 08:58:04 -0400 (EDT)
In-Reply-To: <9408081137.AA16103@fsd.com> from "MANSON@fsd.com" at Aug 8, 94 07:33:23 am
X-Mailer: ELM [version 2.4 PL23]
Content-Type: text
Content-Length: 990       

About this whole lugnut torque thing, the problem is not just because
the dealer happened to use an air wrench.  The problem is improper use
of an air wrench.  When the shop uses an air wrench, they are much more
likely to put the lugnut on to full torqueas soon as they thread it.  
Just one nut tighetend down to full torque, with the rest left off, even
if the one that is on is tightened to the proper torque, is a sure way to
warp a rotor.  You need to tighten the lugs in the proper pattern, in steps.
If you don't do that, you can warp the rotors with the tiny little wrench
in the tire kit.  Insisting that the dealer use only hand tightening is just
a little insurance that the folks at the shop take a little more care.  I
have heard plenty of times at shops...  'I've been doing it that way for
20 years...' and I say sure you have, on drum brakes and disk brakes that
could double for railroad wheels.

Just remember: in the proper pattern, in steps to the proper torque.

Matt