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MAINTENANCE INFORMATION
Regular maintenance is essential to a game's continuing contribution to the operator's earnings.
LUBRICATION
The two main lubrication points of the Left and Right Kickers ("Slingshots") mechanism are the pivots for the
Kicker Arm. Because of the functional design (arm-actuated via solenoid plunger operation), the pivot points
of the Left and Right Kickers ("Slingshots") all require lubrication as a regular servicing procedure. A medium
viscosity oil (20W or 30W) is very satisfactory for these devices.
Lubrication to ensure proper operation also applies to the target blades of the 3-Bank and 5-Bank Drop Targets.
MBllnstrument Grease, also known as Drop Target Switch Lubricant, with a Williams' part number of 20-8886,
is a recommended lubricant.
SWITCH CONTACTS
For proper game operation, switch contacts should be free of dust, dirt, contamination, and corrosion. Blade
switch contacts are plated to resist corrosion. Cleaning blade switch contacts requires gentle closing of the
contacts on a clean business card or piece of paper, and then pulling the paper about 2 inches, which should
restore the clean contact surtace. Adjust the switch contacts to a 1I16-inch gap.
Flipper button switches and the End of Stroke (EOS) switch on the flipper tend to suffer from pitting caused by
the high current in this circuit. Weak or "slow" flipper action is the result of this pitting. Carefully restore the
surtace of the flipper switch contact with a very fine contact file; finish the surface restoration with a contact
burnishing tool. This should bring the flipper action back to its usual 'snappy' action. The contact surfaces of
these switches should be adjusted to enable the maximum area of contact during switch closure. This allows
the current flowing through these switches to be at the designed, peak value for best flipper action.
CLEANING
Good game action and extended playfield life are the results of regular playfield cleaning. During each collection
stop, the playfield glass should be removed and thoroughly cleaned. The playfield should be wiped off with a
clean, lint-free cloth. The game balls should be cleaned and inspected for any chips, nicks, or pits. Replace
any damaged balls to prevent playfield damage.
Regular, more extensive, playfield cleaning is recommended.
However, avoid excessive use of water and
caustic or abrasive cleaners because they tend to damage the playfield surface. Playfield wax or polish may
be used sparingly, to prevent a buildup on the playfield surface. Do not use cleaners containing petroleum
distillates on any playfield plastics because they may dissolve the plastic material or damage the artwork
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