Making pop bumpers kick harder

Fit a new coil sleeve, buff the ball-contact face of the ring to a mirror finish (new rings need it too), and glue the bakelite and steel links together and to the plunger with a flexible contact adhesive, clamped overnight, to remove play. Removing about three layers of winding from the coil also speeds it up (see the coil unwinding procedure).

Systems

• Electro-mechanical

Related tips

• How an EM pop bumper works
• Rebuilding an EM pop bumper
• Cleaning and adjusting the pop bumper spoon switch
• Strengthening pop bumpers by removing coil windings
• Renew sleeves on flipper, pop bumper and sling coils
• Game resets but no playfield solenoid works
• Gottlieb pop bumper relay and score reel stuck on
• Pop bumper stays on after the ball hits it

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