<VV> Late axle retaining bolt

[Andy Clark]

Can I put my oar in here?.

The '65 Chassis Shop Manual does not call out a torque spec for this bolt,
but the '66 Supplement appears to.

It's shown under Rear Axle, and is called an "Axle Shaft Retaining Bolt".
Torque is 15 ft/lbs. This seems low, but I've used this spec and have had no
problems. The bolt, after all, has a pretty long shank and I'd be worried
about stretching it at higher torque.

There are also a number of other rear axle torque specs that seem odd (like
the Pinion Adjusting Sleeve Lock at 25 ft/lbs?- it's a 1/4 NC bolt). Also,
what is the Drive Spindle Yoke Nut vs. the Drive Spindle Flange? Center nut
retaining the axle spindle and the u-joint retaining bolts respectively?

Andy Clark
----- Original Message ----- 
From: <mmcguire at hiwaay.net>
To: <virtualvairs at corvair.org>
Sent: Thursday, December 15, 2005 8:40 AM
Subject: Re: <VV> Late axle retaining bolt


>
> the "french lock" or whatever that "thingie" is will prevent
> the bolt from
> coming loose, so you don't need to over torque it.
> Clark Hartzel
>
> Are you guys sure of using that lower torque???????
>
> Engineering wise, let me tell you the torque is for much more than keeping
the
> fastener from backing off.  It's to keep the bolt from seeing as high of
an
> Osclitory stress and breaking in fatigue.  I'd use the factory
torque-unless
> it's definatly a typo.   For a Grade 8 3/8-16 bolt dry 375 in-lbs and 330
in-
> lbs lubed.  Per MSFC-STD-486 REV B.  That's a tension torque.
>
>
>
> Michael