What I Learned Pulling the Head Off the Kugelfischer Pump ↗
Teardown notes on the tii Kugelfischer pump head. A stuck plunger can be checked by pulling the suction valves and pressing on the spring-loaded plungers, with no need to lift the head. If the head does come off, it gives tips for keeping the plungers in place, and it advises against opening a pump that works.
Tools mentioned: Allen keys, non-marring probe, petroleum jelly
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