Oh yes indeed - these calipers were horrendous. I found repair seal kits never seemed to work well with it, "swing" bolt could seize and the hex hole rounded off trying to remove it, handbrake auto adjust was a nightmare - On a Zephyr and then a Zodiac mkIV I could set it to pass an MOT re handbrake - but a couple of days later it was hopeless..
I found the drums in a certain age of VAG car had teeeeeeeny bleed nipples that just snapped off once a few years old. I used to bleed by releasing the brake pipe slightly - but as for the pre abs rear brake distribution valve - argh............
Being inboard brakes (adjacent to the diff) i never had any issues with those swinging calipers on either of my P6 Rovers, must have helped being out of the worst of the weather but not an easy place to work if they did play up.
On the Zephyr/Zodiac4 they got blasted with all the salt and muck and by the time a couple of years had gone by the dust cover could easily have perforated through with rust, game over once they got a full salt bath.
I like rear drums, provide more than enough braking effort and usually means a decent trouble free park brake...interestingly many truck operators including who i work returned to drum brakes on trailers several years ago, disc brakes on artic semi trailers can give even more trouble than the worst that car makers can come up with if thats possible, seizing being the the number one issue.
All of our cars have the drum inside disc park brake, that's probably the best of both worlds, no trouble and means the rear calipers are simple affairs though i think Toyota maybe went a bit over the top on Landcruisers even fitting vented discs to the rear.
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