I just stumbled across this thread looking for an oldy to revisit. He is lucky he didn't kill himself.
Let's go deeper.
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A modern maxi looks like this. 1 clamp that's removable for the service diaphragm and 1 that's not for the bigger emergency brake spring I'm pointing.
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Here is an old style where both chambers and diaphragms can be opened and repaired.
The main spring can kill u back when there where bad consiquenses for stupid decisions.
I've seen this type on Prevo and I'm quite confident there r still a few out there on late 80s stuff.
I will rebuild these, both ends, when I see them, because u can for less than 20 bucks instead of replacement.
I'll open one up and uncage it open far enough so u can see the difference between the main spring and the service brake spring.
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