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Old 05-30-2026, 11:25 PM
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Shiny Shiny is offline
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Join Date: Nov 2008
Location: Windsor CO
Posts: 2,481
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Look in the master cylinder... factory drum/drum had check valves (item 26) in the outlets. Not sure about power drum but probably the same:



Aftermarket check valves would be inline, could be anywhere. This is a typical example:

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