Philippe,
You need to access a shop manual at the Old Chevy Manual site. Here is a link that answers how to adjust the bearing preload from the 1941 car and truck manual.
http://chevy.oldcarmanualproject.com/shop/1941/41csm096.htm
So basically, you tighten the axle nut and back off 45 degrees (one eighth turn).

The tool is helpful for both the shoe and anchor pins. You could use large pliers or vice grip adjusted to compress the springs. I have done it without that funky tool but since I have 3 trucks with Huck brakes I thought I would treat myself and get one. It is out on loan right now to a friend who is working on a 1940 Chevy car.
PS I don't have the GM numbers for the locks but if you look at the Old Chevy Manual Project site you can find parts books that will have that.
Kent

Last edited by Lightholder's Dad; 05/23/2019 2:25 AM. Reason: post script
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