How To: Restoration of Ford M8 armoured car US Ordnance number 7373

[Lynn Eades]

It is probably not mentioned in the manual, because there will only be one thickness of gasket supplied. The Ford axles have a ).010" gasket.
If every thing is in order, then straight forward assembly of new side bearing cups into the two housings with new cones assembled to the carrier and the whole lot bolted together is "supposed" to give you the correct side bearing preload. If you follow through on the parts info. I think you will find a single gasket is supplied , one part number, no other options, and as with Ford, a little hard to find the info on how thick it is.
If you follow Andrews method it is a good double check.
You can "jerry rig" a set up to do your pinion preload. Give me a call if you want to, and I'll talk you through it.