'42 Buick diff - setting torque on notched adjusters

[Freoway]

  Hi.  I originally placed this query in the general technical section rather than under pre-War Buick.   I've got a '42 Buick fastback sedan in which I replaced the diff's outer bearings and seals.  I removed the diff assembly and refitted it (I didn't need to as it turned out, but that's another story), but am now unsure about how to torque up the notched, threaded adjusters that pull up to the inner bearings toward axle ends.  And of course the workshop manual says there are special tools for doing the job (which noone has).  The diff appeared in good shape, with minimal backlash and no discernable whines, wear, etc.  

 

Is there a simple way to torque up the notched carrier adjuster without special tools?  Finding the free position is pretty difficult and I'm attempting to move the adjusters with a combination of screwdrivers (a little agricultural I know!).  Is it possible to load up the bearings too much, given that I don't have any heavy torque/leverage tools?

 

Cheers, Lloyd

[jeff]

Those adjustments will be how you get your critical backlash adjustment, as well as bearing preload.  You have to follow a certain procedure with a dial indicator (magnetic base type will hold nicely).

 

There is a very specific procedure to follow - either in your shop manual or in a Motor's manual.  Using a screwdriver and a light tap with a hammer is fine to rotate the adjusting collars.