<VV> more ????

[Sethracer at aol.com]

In a message dated 12/14/2005 7:27:55 PM Pacific Standard Time,  
mail2tom at vaxxine.com writes:

I have  the differential together for the 66 Corsa. I am putting the axle 
yokes in,  and I am looking for the torque spec in the manual. I believe the 
manual calls  the bolt an axle yoke nut and wants 100 ft lbs torque on them. 
Sounds like a  lot to me, but if I am reading this right, I will do that to  them.



I wouldn't do that. The "Nut", I believe, referred to in the  Chevy Manual 
chart is the nut that retains the axle yoke on the Stub axle  at the trailing 
arm. Do your inner yoke bolts have "French Locks" on them?  Clarks calls them 
"Special lock under head of U bolt" (Their P/N C1301) But they  are really under 
the U-joint retaining bolt, the one you mention. That type of  lock has tabs 
that bend up and down to lock the head in that position. Sort  of like the 
ones that retain the nuts holding up the exhaust manifolds. That  design also 
means a high torque is not needed to retain that bolt. As more  testimony, 
remember that most torque values are based on the thread size of the  bolt (and the 
material into which it is being threaded). 100 Ft Lbs is a lot  higher than 
any other 5/16 coarse bolt is called out for. GM's standard  Torque table, in 
the front of the 1961 Corvair manual, calls out 15 ft lbs for a  grade 5 bolt 
and 23 ft lbs for a grade eight.  I think 20-25 should do it,  then bend over 
the tabs to lock them in place.  - Seth  Emerson