Date: Tue, 24 Mar 2015 17:27:41 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Torque wrenches
In-Reply-To: <CAJ-pOoaAXbC_QWFyjHre2ciwpx-tV+APJQ3WcsUhqfzd0uqvOg@mail.gmail.com>
Content-Type: text/plain; charset="us-ascii"
The front CV joint screws are longer to compensate for the spacer. Often
those screws in the kits are only P.C. 10.9. They also used a different boot
at times. The one that clamps around the flange.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
sailingfc @dslextreme.com
Sent: Tuesday, March 24, 2015 12:45 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Torque wrenches
Double checked with Bentley: Rear CV bolts are 33 lb-ft, but front CV bolts
are 26 lb-ft. Strange that they would be different.
-Dick-
On Mon, Mar 23, 2015 at 2:46 PM, Dennis Haynes <d23haynes57@hotmail.com>
wrote:
> When it comes to using torque wrenches there are a number of factors
> that need to be considered for successful use.
> There is some skill involved in using one including the clicker type.
> The fastener and mating parts need to be prepped for the application.
> Torque wrenches are precision tools and especially the clicker types
> need to be properly used and stored. Regular calibration is required
> for critical work such as head assemblies and connecting rods. The
> goal is to achieve the proper clamping load for the assembly.
>
> Torque should be applied smooth and steady, apply the torque and hold
> as long as the fastener continues to turn.
> Never use a torque wrench to "break" or loosen a fastener. For the big
> stuff that is why there are breaker bars.
> When finished always lower the setting on the wrench so that the
> spring is relaxed.
> When prepping a fastener consider the lubrication and why! Some
> lubricants can require torque to be reduced by as much as 40%. Do not
> use anti-seize of wheel lugs.
> Vibration is not the cause of fasteners coming loose. Yes it can make
> them fall off afterwards. Loose fasteners are the result of a
> connection that could not sustain the clamp load. Some solid
> lubricants can make for a loose connection as it fills gaps that can
> work out leaving space making that connection loose. Anti-Seize on the
> taper of a lug nut!
>
> CV joints man I have seen my share of those come loose. This is
> acritical application. Both the shear forces on the bolts and friction
> between the joint and flange help to hold this together. Avoid that
> moly grease between the joint and the flange. Use new bolts and check that
they are of quality.
> I have been getting some that junk in the kits. They just keep stretching.
> All hardware should be marked with the grade, (property class) and
> manufacturer. If buying bolts for this job look for P.C. 12.9.
>
> When selecting fasteners, nuts, bolts, and washers need to be matched.
> No sense having strong bolts if the washers dish out letting the
> connection come loose.
>
> Hope some of this helps.
>
> Dennis
>
| 
