Lubricate almost nothing

Pinball mechanisms run dry. Only metal-on-metal pivots such as ball eject and slingshot hinges may get a drop of light machine oil. Never use spray lubricants; old oil mixed with dust gums up coil sleeves and plungers, and gummed sleeves must be replaced.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• Where to lubricate and where not to

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)