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After replacing a cracked flipper bushing, the flipper is slow and weak, with a stiff spot at the start of its travel.

Judge Dredd flipper sticks and lags after a bushing change: clean the bushing and sleeve

Cause: Dirt in the new bushing and the coil sleeve, after the flipper shaft had been forced out during the bushing change.

Checks

  • Move the flipper by hand and feel for drag near the start of its stroke.
  • Check the gap between the crank and the bushing (about a credit card's thickness).
  • In flipper coil test, check that both the power and hold windings work.

Fix

  • Clean the bushing and the coil sleeve, and clean up any burrs on the flipper shaft or its mount.

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Related tips

Source: Pinball Repair help group!! (Facebook group)