I am at the stage in the Youtube video when the four set screws have been pulled from the rear brake drums of my '67 +4. The 'pegs' that look like big slotted screws (that everyone wants to take off, but one shouldn't) are still there. And the brake adjusters have been completely unwound.
This is the point at which the mechanic's hands appear bearing an engineer's hammer, smacking the drum while rotating it. And the drum pops off neatly into those extended hands....
The problem is that my brake drums have evidently not seen that video, and don't seem to be cognisant of their duties. In fact, they show no sign of budging, and ring beautifully when tapped. So, what do I have to do to persuade them to leap off into my own hands?
Or use a puller - or puller + hammer. As Arwys says, there might be a ridge inside the drum, due to wear. If so, it is not sufficient to only unwind the brake adjusters, the automatic adjustment mechanism inside the drum must be released, so the springs pull the shoes together and clear of the ridge. This video shows how to do it:
The video quality is quite bad, but the first minutes explains. I know your car is from 1967, and the video deals with cars from 1993 and later, so it might not work - or you might have a similar arrangement to release the brake adjuster with the drum in situ. It is worth checking out, anyhow. I think a puller should do the trick, though. Good luck!
Robbie the Norseman 2004 V6 Roadster Sherwood green
The video can be confusing. When the mechanism actually is released at aprox 1.20, the view is from the outside, with the drum taken off. Yours is stuck so naturally, this is not what you are going to see, but it shows how the shoes move inwards once the adjuster is released by the screwdriver inserted from the inside of the brake plate. As a said, you might hav a similar arrangement.
Robbie the Norseman 2004 V6 Roadster Sherwood green
The video can be confusing. When the mechanism actually is released at aprox 1.20, the view is from the outside, with the drum taken off. Yours is stuck so naturally, this is not what you are going to see, but it shows how the shoes move inwards once the adjuster is released by the screwdriver inserted from the inside of the brake plate. As a said, you might hav a similar arrangement.
Completely wrong I'm afraid
A 1967 car uses brake backplates from an Austin A60. The hand brake is actuated by rods running parallel with the axle running to a bell crank arrangement which pulls the brake shoes against the brake drum. Simple way of freeing off a stuck handbrake is to remove the pin from the yoke end connecting the rod to the bell crank and then tapping the arm towards the drum.
Also the early arrangement uses a manual adjuster rather than an automatic adjuster for which you need a special brake spanner (to do the job properly otherwise mole grips
Source: years of experience rather than a You Tube mechanic
So I am wrong - very fine. Bear in mind that I said it MIGHT be a similar system, but as the car in question is from 1967, one could not be sure. As for the Youtube mechanic, I have not seen the screwdriver-from-the-insidetrick recommended by anyone else, so he must have certain skills. Anyway, I fully respect knowledge based upon personal experience, not many have that with so old cars. And noboby is trying to act condescending, right?
Robbie the Norseman 2004 V6 Roadster Sherwood green
Yeah, done mine several times and originally used a mixture of hammer for lots of persuasion and large screwdriver to try and lever then off without damaging the back plate.
As mentioned above, on mine there was a lip that had formed on the inside edge, where the shoes had worn the drums. You can grind the lip down to make things easier in the future.