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"A" Coil Chart
Relay and Solenoid coils.
These are mostly Gottlieb coils with some Williams coil part numbers included on this chart.
COIL PART NUMBERRESISTANCE(s)FUNCTION(s)TENSION
A-48915 OHMSADVANCE UNIT RELAY
BALL GATE RELAY
00-90 UNIT RELAY (MATCH UNIT)
25 Volts
A-11183.5 OHMSBONUS INCREASE RELAY
CONTROL BANK
DOUBLE BONUS RELAY
EXTRA BALL RELAY
1st BALL RELAY
GAME OVER RELAY
LAST BALL RELAY
RESET CONTROL RELAY
2nd,3rd,4th PLAYER RELAY
25 Volts
A-11192 OHMSROLLOVER RELAY25 Volts
A-14693 OHMSGENERAL PURPOSE25 Volts
A-14963 OHMSSTEP-UP BALL PLAYER
STEP-UP BONUS UNIT
STEP-UP PLAYER UNIT
STEP-UP REPLAY UNIT
BALL RETURN
BALL SHOOTER
HOLE KICKER
KICKING RUBBER
KICKING TARGET
POP BUMPER
0-9 UNIT
25 Volts
A-48932 OHMSBALL KICKER
POP BUMPER
UP KICKER
25 Volts
A-51411 OHM / 8 OHMSFLIPPER FLIPPER25 Volts
A-51433 OHMSBELL BELL
KNOCKER KNOCKER
25 Volts
A-51935 OHMSSCORING25 Volts
A-51944.5 OHMSSTEP-UP BONUS UNIT
STEP-UP COIN UNIT
STEP-UP CORNER UNIT
STEP-UP PLAYER UNIT
STEP-UP REPLAY UNIT
FLIPPER
GONG
HOLE KICKER
HOLE KICKING RUBBER
TARGET KICKING
TARGET KNOCKER
KNOCKER POP
BUMPER POP
BALL PLAYER RESET
COIN UNIT
CORNER UNIT RESET
SUBTRACT BONUS UNIT
REPLAY UNIT
SUBTRACT REPLAY UNIT
UP KICKER
25 Volts
 
COIL PART NUMBERRESISTANCE(s)FUNCTIONSTENSION
A-519512 OHMSBALL RELEASE
CHIME
CONTACT KICKER
KNOCKER
OUTHOLE
25 Volts
A-519613 OHMSCONTROL BANK RESET
TARGET BANK RESET
110 Volts
A-5197? ?ROTO UNIT ROTO UNIT25 Volts
A-5294? ?2 COINS PER PLAY RELAY110 Volts
A-56627,5 OHMSLAST BALL RELAY
LOCK RELAY
RESET CONTROL RELAY
25 Volts
A-669810,5 OHMS2 COINS, 3 PLAYS RELAY25 Volts
A-76770,5 OHMCOIN LOCKOUT25 Volts
A-78001 OHMCONTROL BANK RESET25 Volts
A-7833390 OHMSGENERAL PURPOSE110 Volts
A-91546,5 OHMSSCORING UNIT25 Volts
A-947921,5 OHMSSEQUENCE BANK RESET
TARGET RESET BANK (50 HZ)
110 Volts
A-9731? ?COIN CHUTE RELAY110 Volts
A-97332 OHMSSERIES RELAY25 Volts
A-973514 OHMSSTEP-UP BONUS UNIT RELAY
STEP-UP PLAYER UNIT RELAY
STEP-UP REPLAY UNIT
BALL RETURN RELAY
BALL SHOOTER RELAY
BONUS SCORE RELAY
CONTROL BANK RESET
HOLE VALUE RELAY
LAST BALL RELAY
PLAYERS RESET RELAY
POP BUMPER RELAY
RESET CONTROL RELAY
SCORE CONTROL RELAY
SPIN TARGET RELAY
START RELAY
10-100-500-1000 POINTS RELAY
25 Volts
A-973625,5 OHMSALTERNATING RELAY
COIN LOCKOUT
EXTRA BALL RELAY
1st BALL RELAY
GAME OVER RELAY
HOLD RELAY
25 Volts
 
COIL PART NUMBERRESISTANCE(s)FUNCTION(s)TENSION
A-973830 OHMSALTERNATING RELAY
115 VOLT RELAY
EXTRA BALL RELAY
HOLD RELAY
100,000 POINTS RELAY
30 VOLTS HOLD RELAY
TILT HOLD RELAY
25 Volts
A-974020 OHMS"A","B","C", RELAY
STEP-UP REPLAY UNIT
BONUS BOOSTER RELAY
BONUS SCORE CONTROL
1st BALL RELAY
1st,2nd,3rd, CHUTE RELAY
GAME OVER RELAY
REPLAY BUTTON RELAY
SEQUENCE COMPLETED RELAY
START RELAY
3rd CHUTE DELAY RELAY
VARI - TARGET RESET
25 Volts
A-9741? ?REPLAY BUTTON RELAY
2 PLAY RELAY
110 Volts
A-974211 OHMSTILT RELAY25 Volts
A-97462 OHMSDOUBLE BONUS RELAY
SERIES RELAY
25 Volts
A-12092? ?CHIME25 Volts
A-152597.5 OHMSSCORING UNIT25 Volts
A-153590.5 OHMDOUBLE BONUS CONTROL RELAY
EXTRA BONUS RELAY
25 Volts
A-155559.5 OHMSTARGET RESET BANK (60 HZ)110 Volts
A-1657015.5 OHMSKICKOUT HOLE
OUTHOLE
25 Volts
A-16890230 OHMSALTERNATING RELAY
COIN LOCKOUT
EXTRA BALL RELAY
GAME OVER RELAY
TILT RELAY
25 Volts
A-17564156 OHMSVARI-TARGET25 Volts
A-178753 OHMS / 40 OHMSFLIPPER25 Volts
A-1787624 OHMS 24 OHMSCHIME25 Volts
A-178913,5 OHMS 3.5 OHMSROTO UNIT ROTO UNIT
TARGET BANK RESET (5 pos.)
25 Volts
A-181029 OHMSTARGET RESET BANK (7 pos.)25 Volts
 
COIL PART NUMBERCOIL RESISTANCE(s)FUNCTION(s)TENSION
A-183187 OHMSBANK TARGET RESET (4 pos.)25 Volts
A-1864258 OHMSMEMORY / DROP TARGET TRIP25 Volts
A-1921725.5 OHMSDROP TARGET TRIP (Pinball Pool)25 Volts
A-193008 OHMSBALL KICKER25 Volts
A-1950835 OHMSDROP TARGET TRIP25 Volts
A-200952 OHMS / 35 OHMSSUPER FLIPPER25 Volts
A-20558156 OHMSGATE GATE25 Volts
A-217412,5 OHMS 2.5 OHMSUP KICKER25 Volts
A-241612 OHMS / 40 OHMSINTERMEDIATE FLIPPER25 Volts
A-259594 OHMS / 202 OHMSFLIPPER (New unit)25 Volts
A-2645042 OHMS 42 OHMSGENERAL PURPOSE25 Volts
A-2645166 OHMS 66 OHMSGENERAL PURPOSE25 Volts
A-26452137 OHMS 137 OHMSDROP TARGET TRIP25 Volts
A-266465 OHMS / 201 OHMSFLIPPER (New Unit)25 Volts
A-2664928,5 OHMSGENERAL PURPOSE25 Volts
A-2692633 OHMSBANK TARGET RESET25 Volts
A-276429 OHMS / 203 OHMSFLIPPER (New Unit)25 Volts
A-2764311 OHMS / 202 OHMSFLIPPER ( Old unit )25 Volts
A-2792665 OHMSGENERAL PURPOSE25 Volts

Electro-Magnetic Coils

20-10179 magnetic coil
20-10179

Magnet coil used on Tales of the Arabian Nights and Theatre of Magic.

Williams/Bally reference
#20-10179.

Williams/Bally Magnet Coil 20-10197
Williams/Bally Magnet Coil
#20-10197

Electro-magnet coil used on Magna-saves
Theatre Of Magic, Champion Pub, No Fear, Tales of the Arabia Nights, Cirques Voltaire, Star Wars Episode 1

Williams/Bally 20-9247 Magnet coil
20-9247

Magnet coil used on many machines such as The Addams Family, Theatre of Magic, World Cup Soccer, and Twilight Zone.

Williams/Bally reference #20-9247.

Williams A-15685 magnet coil
A-15685

Magnet coil used on Williams High Speed II - The Getaway supercharger ramp.

Williams reference #A-15685.

Flipper Shaft Bushings
These are flipper shaft plastic bushing and not coil sleeves.

Important Note on Flipper Bushings:

Worn out or wrong type of Flipper bushings cause playfield "flipper scrapes".  If the plastic flipper bats do touch the playfield at any point in their movement then replace all flipper bushings immediately.
Plastic flipper body playfield scrapes are caused by the flipper body or its metal mounting bracket. They can be prevented but the playfield can't be restored to pre scrape condition. Often route people and game repair shops install the wrong bushing type for the pinball they are working on. Check and double check the flippers to make sure they have enough clearance between the flipper and the playfield.
545-5070-00 bushing
Stern/Sega &
Data East #545-5070-00

03-7568 Flipper Bushing
03-7568 Flipper Bushing

Used on all Williams pinball machines from 1980 to 1999.
Used on all Bally pinball machines from 1989 to 1999.

Williams/Bally reference #03-7568

 Back to Coil Chart Index

03-6014 and A-2408 flipper Bushing
03-6014 and A-2408 Flipper Bushing
Williams nylon flipper bushing used on all games from Post Time (04/69) to Laser Ball (12/79).

Williams Part Reference #03-6014
Gottlieb Reference Part Number - Gottlieb A-2408

The following pinball games use this size of flipper bushing.

1969-04 Post Time, 1969-05 Suspense, 1969-06 Smart Set, 1969-09 Paddock, 1969-10 Expo, 1969-10 Roto, 1969-12 Set Up, 1969-12 Seven Up, 1970-01 Gay 90's, 1970-03 4 Aces, 1970-04 Jive Time, 1970-04 Rock 'N Roll, 1970-06 Aces & Kings, 1970-09 Strike Zone, 1970-10 Straight Flush, 1970-11 3 Jokers, 1970-12 Dipsy Doodle, 1971-02 Solids N Stripes, 1971-03 Doodle Bug, 1971-03 Love Bug, 1971-04 Gold Rush, 1971-04 Jackpot, 1971-08 Klondike, 1971-08 Planets, 1971-08 Yukon, 1971-08 Zodiac, 1971-10 Stardust, 1971-10 Yukon Special, 1972-01 Olympic Hockey, 1972-03 Granada, 1972-03 Spanish Eyes, 1972-05 Honey, 1972-05 Winner, 1972-08 Super Star, 1972-09 Big Star, 1972-09 Fan-Tas-Tic, 1972-12 Swinger, 1973-01 Travel Time, 1973-02 Fun-Fest, 1973-02 Summer Time, 1973-03 Match Race, 1973-05 Gulfstream, 1973-05 Tropic Fun, 1973-06 Jubilee, 1973-06 Skee Skill, 1973-09 Darling, 1973-10 OXO, 1974-01 Star Action, 1974-01 Tramway, 1974-02 Triple Action, 1974-03 Dealer's Choice, 1974-05 Skylab, 1974-07 Spacelab, 1974-07 Strato-Flite, 1974-10 Super-Flite, 1974-11 High Ace, 1974-11 Lucky Ace, 1974-12 Star Pool, 1975-03 Satin Doll, 1975-04 Big Ben, 1975-05 Pat Hand, 1975-07 Valencia, 1975-08 Triple Strike, 1975-09 Black Gold, 1975-09 Little Chief, 1975-12 Toledo, 1976-01 Space Mission, 1976-06 Space Odyssey, 1976-07 Aztec, 1976-11 Aztec, 1976-12 Blue Chip, 1976-12 Grand Prix, 1977-04 Liberty Bell, 1977-05 Big Deal, 1977-06 Hot Tip, 1977-07 Lucky Seven, 1977-08 Rancho, 1977-09 Argosy, 1977-10 Wild Card, 1977-11 Hot Tip, 1977-12 Road Champion, 1978-03 Lucky Seven, 1978-05 Contact, 1978-05 World Cup, 1978-08 Disco Fever, 1978-10 Pokerino, 1978-11 Phoenix, 1979-01 Flash, 1979-03 Stellar Wars, 1979-06 Rock 'N Roll, 1979-07 Tri Zone, 1979-09 Time Warp, 1979-12 Gorgar, 1979-12 Laser Ball

Solenoid Coil Sleeve Chart
  "=Inch
All new replacement solenoid coils are shipped with the proper length and style of coil sleeve.
Replacing old dirty coil sleeves and cleaning the coil plunger are the least expensive ways to cure sluggish solenoids.
Replacement of metal coil sleeves with plastic sleeves is mandatory as the nylon plastic sleeves perform better and last longer.

1 1/4 inch pinball coil sleeveWilliams/Bally 03-7066-5 coil sleevetwo and one quarter inch coil sleeve03-7067-3 nylon coil sleeve with a 3/16 inch flange
1-3/4" Coil Sleeve
This 1-3/4" nylon coil sleeve is the most commonly used length on all brands of pinball machines.
Typically found on pop bumpers, slingshots, kickers, and early solid state and electromechanical flipper assemblies.
Reference Part Numbers:
Williams/Bally 03-7066.
Stern/Sega/Data East 545-5411-00.
2-3/16" Coil Sleeve
Used on Williams post -1980, Bally post- 1988, Stern post- 1999, Data East and Sega flipper assemblies.
This is the standard flipper coil sleeve replacement for all newer model solid state pinball machines.

Reference Part Number:
Williams/Bally 03-7066-5.
2-1/4" Coil Sleeve
This is the proper nylon coil sleeve for
Williams System 6 and System 7 flipper assemblies.

This coil sleeve is slightly longer than the much more common 2-3/16" sleeve. The extra 1/16 inch is needed to keep the flipper plunger return spring from getting wedged between the plunger and coil.
2-1/16" Coil Sleeve
Nylon coil sleeve with a 3/16" flange.
Used on Bell coils and Knocker units.

Williams/Bally Reference Part Number 03-7067-3

See our Arcade Tech Tips page for more info on coil and flipper sleeves.
Ball shooter rod sleeve ball popper rod sleeve inside of a coil sleeve  This special purpose Ball Popper/Shooter rod sleeve looks like a normal coil sleeve. Except they are usually at least two inches in length. Also, they usually can slide inside a normal coil sleeve (see photo on right of shooter sleeve) and most have a 1/4 inch inside diameter.
 This type of special sleeve is getting harder to find, but is essential to proper ball shooter rod operation.


 NOTE: Check for bent, dirty or "mushroomed tipped" metal shooter rods, bad shooter tip rubber and rod springs when replacing this sleeve.
bell knocker coil sleeve Bell, Chime or V.U.K. Coil Sleeve.
center hole coil stop used for bells and chimes Notice the extra length of sleeve after the coil stop ridge.
 This type of coil sleeve is used with coil stops with a centered hole.
 The coil's plunger passes through both the solenoid coil and coil stop to allow for a greater travel distance. The greater travel equates to more momentum and louder bell sounds.
  A VUK uses this greater core travel to lift the game ball much higher then it could if the plunger core was stopped by a normal coil stop. Allowing it to thrust the ball though a metal ramp above the VUK unit.
metal vs plastic coil sleevePlastic VS Metal Coil Sleeves
 It is best to replace a metal coil sleeve found in older electro-mechanical pinball games with a new plastic sleeve when ever possible.

 The plastic sleeve offers greater longevity and performance over the metal coil sleeve. Plastic does have a draw back as it will melt if the coil is energized for too long of a time. However, if a coil is hot enough to melt its coil sleeve then it is probably already burnt itself out.


Standard Solenoid and Bell/Chime Coil Sleeve Lengths
G=Gottlieb,   B=Bally   W=Williams,   WB=new B and W part number (after W bought B)
CC/OS=Chicago Coin / Old Stern,   S/S/DE=new Stern / Sega / Data East

(Original Sleeve Manufacturer) - NOT part of the sleeve's part number
Coil Sleeve Length
in Inches
Manufacture's Part Number Bell/Chime/Up-kicker/V.U.K. Manufacture's Part NumberSpecialty
1-1/4"A8111 (G),
03-7066-1 (WB),
130-1536 / 91-1509 (CC/OS)
1-3/16" - 1-1/2"4A-159-1 (CC/OS) 
1-3/8"143-808 (CC/OS)1-5/8" - 2"A6087 (G), 03-7067 (WB),
4A-159 (CC/OS)
Bell
(short length sleeve)
1-5/8" - standard length for both G and BA5064 (G)1-9/16" - 1-13/16"03-7067-3 (WB) 
1-3/4" - standard length for W545-5031-00 (S/S/DE),
03-7066 (WB)
1-11/16" - 1-13/16"545-5076-00 / 545-5076-01 (S/S/DE)
21411 (G)
1-13/16"A5065 (G),
03-7066-3 (WB)
2-1/16" - 2-1/4"25605 (G), 545-5709-00 (S/S/DE),
03-7067-5 (WB)
1-15/16" - 9/16" Diameter2A-232 (CC/OS)2-1/2" - 2-5/8"03-7067-1 (WB)
2-1/16"03-7066-4 (WB)2-1/2" - 2-3/4"A5142 (G), 545-5847-00 (S/S/DE),
03-7067-6 (WB), 167-800 (CC/OS)
Bell
(long length sleeve)
2-3/16"545-5388-00 (S/S/DE),
03-7066-5 (WB)
 The short bell sleeve length is used to ring a small sized bell mounted close to the coil.
 The long bell sleeve length is used on knockers, bells, and VUKs were the solenoid core must move a great distance without falling out of the coil sleeve. This sleeve usually sticks way out of both ends of the coil.

  *All sleeves listed on this chart are 1/4 inch inside diameter unless indicated otherwise.
2-15/16" *
9/16" Diameter Sleeve
03-7068 (WB)
2-1/2"A5172 (G)
Pinball Medic coin-op game sales, restoration, refurbishment, repair located in Austin, Texas

new Comments

 Dear Pinball Medic, I'm just sending you this short message to thank you for your detailed charts about pinball coils. We're a small family run coin-op business in France, and thanks to your charts (in this case the resistance values for the coils) we were able to finally put an end to our Indy's (IJ) reset problems (bad coil at 75 ohms instead of 135ish). Thanks!  (5-22-12)

 PM - It appears these amusement game coil charts have saved another pinball machine. This always brightens our day.