Cleaning and waxing a WPC playfield

A dirty playfield slows the ball and wears faster. Clean with a plastic polish such as Novus 2, which is safe on the playfield and ramps. Avoid solvent-heavy liquid cleaner-waxes with petroleum distillates, which Williams advised against. Follow with a hard paste carnauba wax; re-waxing about every 100 games keeps ball speed up and wear down.

Systems

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

Related tips

• Cleaning and waxing the playfield
• Left ramp hard to make: clean and wax the ramp as well as the playfield
• Avoid cleaners that attack the playfield coating and ramps
• WPC: replace the leak-prone radial 100 uF caps on opto boards and power driver C2

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