82-70 A or B

[Joe]

I know I should know this but how do you tell the difference between an A or B machine?

[ewen]

Re: 82-70 A or B

The 82-70 A has a bin motor that rotates the the bins to drop the pins into the cups. The B has a shuttle. The A distributor has its own drive motor. The A table cam has a fourth lever "TC" . The A chassis has an extra stepper " D " to control the distributor. The A control box has a distributor zero push button , a distributor circuit breaker ,along with a bin motor circuit breaker.
That is all I can think of ,unless you want to count the "chicken wire " spotting cups.

Mark

[TheGMan143]

Re: 82-70 A or B

If you've seen one 82/70 machine, it was most likely not an "A" model, and if you have seen a later-model 82/70 machine, the differences won't be hard to notice:

[Lafarge..]

Re: 82-70 A or B

From what Carl from AMF siad to me last year there are no more A machines left in operation. The diffrence in the B andC machines is the respot cylinoid has been taken out of the Equation. Also the 7 pin respot cell has been changed to bolt on to the wireway insted of having a adjustible link. The last but not least is the MP chassis instead of the SS chassis

[JimDorsin]

Re: 82-70 A or B

I may be mistaken, but I think that PBL's were also introduced in conjuction with the c's.

[Coors]

Re: 82-70 A or B

1954 4400 3741
1956 5850 13,018
1958 6525 early 33,423
1960 6525 late 60,301
1962 82-70 A 90,001
1964 82-70 B 95,151
1965 6700 Elco 99,191
1965 6700 Elco 99,236 First 14.5 rpm motors
1968 6700 Elco 101,696 1st single solenoid Machine
1968 6700 Elco 103,678 switched back to 12.1 motor
107,923 change from sweep shock to telescoping link
110,072 5/32 -> 1/4" plunger hole & spring link 6281->6724
110,191 new style TDA Yoke
110,390 new table leg style
1976 7750 SS C23 142,225 First PBL
1978 9800 MP 143,680 First MP chassis

82/70 A - Gmans post
82/70 B - an A converted to the 82/70 as we know it, but still uses the A "stepper" chassis
82/70 C/SS - elco chassis, basically as we know it today.

[Coors]

Re: 82-70 A or B

one of two old style 7 pins still in use at my house. never had any probs, no need to update.

[TheGMan143]

Re: 82-70 A or B

Ya know, that's funny... we have exactly the same thing... two machines with the old-style "overhead longarm" links on them. Never gave us any trouble, either.

Joe: The pic I posted was actually made up from several larger pictures I have. It's hard to see, but the distributor was another big difference (besides the basket cups and the rollover bins). If you've ever looked at the control panel of a later-model 82-70 machine, there's a few spots in it that are labeled, but not used. One is marked "DIST CB", and the other is marked "DIST STEPPER ZERO"... Another is marked "BIN MTR CB"... they are just blank spaces, with no controls mounted in them. On the 70A, the big nylon cam was mounted horizontally next to the distributor (the whole setup kind of reminds you of an old record player), and had it's own motor to drive it. Later, they mounted the nylon cam gear to the side of the distributor and drove it off the same shaft as the belt. The distributor also had a more 'arched' shape to it, instead of the long, flat arm of the 70B and later machines.

[Tablejam]

Re: 82-70 A or B

Ewen,

What was "TC" for?

[ewen]

Re: 82-70 A or B

Originally posted by TABLEJAM:
Ewen,

What was "TC" for?

<font size="2" face="Verdana, Helvetica, sans-serif">The "TC" cam indicated that the table was at zero degrees .Since the bin had to roll the pins into the cups, and it was done through a motor, the "TC" cam prevented the bins from rolling if the table was not at zero.

Mark

[ewen]

Re: 82-70 A or B

Originally posted by lafarge:
The diffrence in the B andC machines is the respot cylinoid has been taken out of the Equation.

<font size="2" face="Verdana, Helvetica, sans-serif">lafarge,
are you sure about that ?

When AMF introduced the 5 board chassis, the machine was called the 82-70 SS (SS designating solid state ) . Later the SS was dropped ,and C became the designation for an 82-70 equipped with a 5 board chassis .( C was still used as a designation with the introduction of the MP chassis )
The 82-70 B machine utilizes a stepper driven chassis.
I do service for a 10 lane 82-70 5 board chassis equipped center . The machines have the respot solenoid. According to your post, that would make these machines "B" .That is why I am asking if you are sure that the difference between B and C is the respot solenoid.

Mark

[TheLegend]

Re: 82-70 A or B

If you look into the older 82/70 maintenence manuals there's a picture in there of the machine with the fourth table cam.

[8270kiwi]

Re: 82-70 A or B

yes just tonight i was looking thru the manual trying to work out why i was getting interlock all the time and found the pic with 4 cam. confused me till i turned the page. also all of our 7 cells are using the adjustable link. they are fine as long as you dont have a tech that likes to play with things

[John_Galt]

Re: 82-70 A or B

At what point did they quit the 82/30-like BE gearmotor?

[toon30s]

Re: 82-70 A or B

The 82-70A backend motors are also different in that they turn the distributor about 1/2 again faster. My center was one of the unlucky few to open in 1962 with the A's. They lasted here until 1996. Wish I had thought to take pics or video of them in action. They have been replaced with 82-30s!!!