Is this supposed to be a trick question? If there are drum brakes there won't be any calipers in the first place, so torque wrench settings are the least of your worries!
JD
May 2011
you worry too much mate,just tighten em up hard as you can,most garages only use torgue wrench for head bolts,
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.