pull em apart and you'll see
1. check that the wheel cylinders are not leaking. you should pull the wheel off and the drum off to see if there is any fluid streaming out anywhere. if so you can replace the wheel cylinder or overhaul it (depends on your budget, but wheel cylinders are pretty cheap). check the shoes, if they look like they have plenty meat left, no worries, otherwise get new ones. if it has sat for a while the pistons sometimes seize as well. don't push the pedal in with the drum off because the piston in the wheel cylinder will pop out, so put the drum back on and have someone push the pedal and see if it locks up the drum. put wheel back on
2. if it has a sat for a while (how many years?) you may need to change the fluid in its entirety. the fluid absorbs water so makes it crappy. use the bleeding procedure, but just pump it all out, and replace it with new fluid. i find that if i get a new fluid with a different colour i can easily tell when the new stuff is down that particular line. this is a no brainer if you are on a tight budget. fluid is cheap
3. if all the above is ok, you probably just need to wind the adjusters out so the drum just begins to grab without any brake pedal application, then wind it back off 1/4 turn so it is free.
4. check the tyre pressures. uneven pressure can lead to it pulling to one side
5. if you do all that and it still pulls under heavy braking, you could always convert to discs
good luck
michael
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66 Mini Minor sponsored by
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