Cusser
+1y
For the rears, you may need to drill those out if a #3 Philipps impact driver doesn't work (don't try #2, too small). And use 8 x 1.25mm hex head screws, about 30mm long, in the other two threaded holes to press the drum off.
For the front, rebuilt calipers are about $50 if you can't re-tap or use insert to repair.
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