A 7- or 10-target Gottlieb bank resets inconsistently or not at all.

Large Gottlieb drop target bank won't reset: worn or sheared pivot rod

Cause: The reset arm pivots on a 3/16 inch rod held by push-nut caps or E-clips. Where the two reset coils' levers act on it, the rod wears and eventually shears, at either end.

Checks

• Inspect the pivot rod near each reset lever for a worn neck or a break.

Fix

• Replace the rod; leaving it risks damage to other bank parts.
• Use 8-32 threaded rod cut to length with an 8-32 nylon locknut on one end. Push it in from one side so it drives the old rod out through the same holes, without dismantling the bank, then fit the second locknut.

Systems

• Electro-mechanical

Related tips

• Drop targets don't all reset fully: rebuild the reset and face the worn reset bar
• Vari-target doesn't fully reset and the score motor keeps running

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)