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post #103 of (permalink) Old 01-16-2018, 01:46 PM Thread Starter
DPeterson3
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Join Date: Apr 2007
Location: Carson City, NV
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Auto adjusting brakes.... Really????

Got some work done last night and today, but not as much as I'd like. Still, daily progress.

I've always been told that the later style brakes on the 102 were auto-adjusting, and a few of you have remarked how you like having auto-adjusting brakes.

I can see no evidence of a system on these late brakes that would result in automatic adjustment.

These rear late-version brakes appear much like the early version, except for the large, silver hex head on the shoe body. The function of that escapes me. Still, there is the square-headed adjuster that allows a crude sort of adjustment periodically, via rotation from flat spot to flat spot while the tapered plunger gradually separates the shoes a little, taking up for wear.

The late model front brakes have their two cylinders located fore and aft, whereas the early are top and bottom. There is a rotating pin that goes through the "tang" at the back of the cylinders which rotates a sort of scroll-shaped expander when the rectangular tang on the head of the pin is rotated. It is kept from rotating on its own by a little gear under the nut that is gripped by a sort of "C" shaped circlip. I see this assembly as just being a different sort of manual adjuster.

Can anyone explain where the idea of auto-adjusting 102 brakes came from, and how they might work if they actually do? Also, what do those bloody big hex-headed things do, assuming they do anything? Maybe one removes them to make brake shoe assembly easier?
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Don P
Carson City, NV

Past Alfas...
59 102 Touring (first Alfa $500 running)
65 Sprint GT (2nd Alfa, $500 daily driver)
102 Sprint (never did anything with it, but wish I had)
74 Berlina (first new car - now certainly rusted into oblivion)
61 Giulietta Spider G-Prod Race Car (where is it now?)
84 Spider Veloce (rarely drove it, so sold it)
86 Quadrifoglio (Dull car - no more 115s for me)
1971 Montreal "The Full Monty". Fair winds and following seas

Current Alfas
59 102 Touring Roadster - restoration complete, enough Alfa for any rational man. Or irrational, for that matter
Oops. Add to the "present" list, 10204 01488, 2000 Touring Roadster project

And past...
Two 1946 Stampe SV4C (c/n 294 "Rocinante" - wife's favorite airplane. RIP), and c/n 235 "La Bon Temps Femme" (gone to a new home, but never forgotten)
Zlin 50LA (+9 -6 gees, titanium spar, 1200 lbs, 260HP rumored to now be in Brazil)
1946 Luscombe 8A
Starduster Too (recently spotted at the Nevada City, CA airport - over 20 years and an entire continent separating it from our stewardship in Binghamton, NY)
1955 Cessna 170B (wife taught me to fly tailwheel in this)

And present...
64 Mooney M20E ("Rambo". My faithful steed for over 40 years) Over 55 years old, and just returned from a trip to Argentina in him
Newest in the fleet
1967 Piper Super Cub on Wipline amphibious floats (a true "all terrain vehicle")
2010 Triumph Thunderbird


You can snap roll an Alfa only one time...
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