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Tokheim 850 Chain Drive #704504
Tue Feb 13 2018 03:52 PM
Tue Feb 13 2018 03:52 PM
Joined: Jun 2013
Posts: 525
Dallas, tx
M
model72 Offline OP
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Dallas, tx
The chain that connects the hand reset rod sprocket to the sprocket on the hand gears (best explanation I can come up with) is missing on my 850. Does anyone have a photograph of the chain connected between the reset rod large sprocket and the small sprocket on the hand movement mechanism. It would be a photo with the chain guard removed. I can't figure out how the chain ran between the two sprockets. It doesn't appear to be a direct connection on my model. It will be a difficult area to take good photos. What does the spring do that goes over the reset rod? it connects to the sprocket on one end with a tang, but my spring is probably broken off since it is only 5 inches long and there is no tang on the end.

chain drive on reset shaft.JPGchain drive hole in frame.JPG
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Re: Tokheim 850 Chain Drive [Re: model72] #704505
Tue Feb 13 2018 03:56 PM
Tue Feb 13 2018 03:56 PM
Joined: Jun 2013
Posts: 525
Dallas, tx
M
model72 Offline OP
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Dallas, tx
After looking at the photo I posted, maybe the chain guard pushes down on the chain far enough that it does connect directly to the small sprocket that is hidden from view. Can anyone confirm?
Joe

Re: Tokheim 850 Chain Drive [Re: model72] #704506
Tue Feb 13 2018 04:26 PM
Tue Feb 13 2018 04:26 PM
Joined: May 2003
Posts: 129
Alberta, Canada
texacojoe Offline
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Posts: 129
Alberta, Canada
Here is a pic that might help.

joe new 220.JPG
Re: Tokheim 850 Chain Drive [Re: model72] #704520
Tue Feb 13 2018 07:23 PM
Tue Feb 13 2018 07:23 PM
Joined: Jun 2013
Posts: 525
Dallas, tx
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model72 Offline OP
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Dallas, tx
TexacoJoe, can you take another photo of the same area, but lower so I can see the spring that covers the hand reset rod? I assume my spring is broken as there is no tang on the left side, but there is a tang on the right side that fits into the sprocket. What is the spring's purpose?
Joe
[Linked Image]
[Linked Image]

Re: Tokheim 850 Chain Drive [Re: model72] #704550
Tue Feb 13 2018 10:07 PM
Tue Feb 13 2018 10:07 PM
Joined: Dec 2002
Posts: 3,177
Cleveland,Ohio U.S.A.
JimT Offline
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JimT  Offline
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Joined: Dec 2002
Posts: 3,177
Cleveland,Ohio U.S.A.
Ron Scobie sells a parts beakdown for 12 dollars. If Im not mistaken it looks like it might be 43 pages? Sounds like a lot of pages.

Re: Tokheim 850 Chain Drive [Re: JimT] #704557
Wed Feb 14 2018 12:50 AM
Wed Feb 14 2018 12:50 AM
Joined: Jun 2013
Posts: 525
Dallas, tx
M
model72 Offline OP
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Dallas, tx
I have one on order.

Re: Tokheim 850 Chain Drive [Re: model72] #704606
Wed Feb 14 2018 02:55 PM
Wed Feb 14 2018 02:55 PM
Joined: May 2003
Posts: 129
Alberta, Canada
texacojoe Offline
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texacojoe  Offline
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Joined: May 2003
Posts: 129
Alberta, Canada
Joe I think this is what your looking for, not the best picture but you can see the reset rod with the spring and the springs attaching point.

Tok 850.JPG
Re: Tokheim 850 Chain Drive [Re: model72] #704608
Wed Feb 14 2018 04:06 PM
Wed Feb 14 2018 04:06 PM
Joined: Jun 2013
Posts: 525
Dallas, tx
M
model72 Offline OP
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Dallas, tx
Thank you for posting the diagram. I can't determine where it attaches on the right side of the diagram.

Re: Tokheim 850 Chain Drive [Re: model72] #704614
Wed Feb 14 2018 05:18 PM
Wed Feb 14 2018 05:18 PM
Joined: Nov 2000
Posts: 7,284
St. Louis, MO, USA
J
Jack Sim Offline
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Jack Sim  Offline
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Joined: Nov 2000
Posts: 7,284
St. Louis, MO, USA
Here are some pictures of your pump. They are on my website at: http://petrolianacollectibles.com/tokheim%20850.htm

Jack Sim


Author, Gas Pump Identfication books 1st & 2nd Editions & Air Meter Identification books
We rebuild ECO air meters and sell parts.
Re: Tokheim 850 Chain Drive [Re: Jack Sim] #704626
Wed Feb 14 2018 09:10 PM
Wed Feb 14 2018 09:10 PM
Joined: Jun 2013
Posts: 525
Dallas, tx
M
model72 Offline OP
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model72  Offline OP
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Joined: Jun 2013
Posts: 525
Dallas, tx
Jack, I sent you an email last week. I wanted to purchase two pieces of 850 literature. Never heard back from you. Maybe you never received it.
Joe


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