V 81 btttle stack issues

[JP White]

Hi group,
I'm rebuilding my first Vendo bottle stack and I have a couple questions...
Pointing to the area in question - does the Cam actually push-up that segment when entering the vend cycle?
If the cam does not push the segment up; is a spring used as the motive force to pull the segments up to the "vend" position?

Did vendo print a parts manual with this level of detail?

Thanks, JP

[JP White]

Sorry! Here is the image.

[Creighton]

Hi JP,
I'll take a shot at this. The part you are pointing to resets the cam. The cam pushes the part to the right in your picture to allow vend. This is hard to describe but here are pictures first is no-vend and second is when it will allow vend. Let me know what else would help.
Creighton

[Jim]

JP,

It looks like yours has been cut or modified for some reason or another...
I would say that yours is currently in the vend position and by removing this part of the mech wouldn't reset the locking bar when a bottle is removed thus keeping the vending rack in free-vend...
The spring is there to lighten the load of resetting the vend cycle by the cam.

[collecture]

Hi JP,
Here is my understanding of the stack. (See pic)

The vend cam, when actuated by the coin mech, pivots the rocker arm. The rocker arm pushes the lock slide out and the lock slide latch holds it in place (in the open or vend position). When a bottle is vended, the full extension of the bottle gate pushes the Master Link downward striking the latch, which releases the spring loaded lock slide. The springs on the Master Link will then reset the stack for the next vend.

Not a full blown detail of what happens - just Cliff Notes.

[JP White]

Guys, thanks so much for the help!  It's still broke - but I'm getting a better understanding.
Below is an attempt to quote Collecture:  
[The vend cam, when actuated by the coin mech, pivots the rocker arm. The rocker arm pushes the lock slide out and the lock slide latch holds it in place (in the open or vend position).]
OK - in this part of the vend cycle, what is the motive force that pushes the Master Link UP?  This stack will not vend unless the Master link and the 8 links above move UP.  The 3 springs along the links just hold the links together.  Should I have a spring from a link to the housing to apply upward force?
Thanks again guys for your effort.  
JP

[collecture]

JP,
I don't have my scanner hooked up currently, but I will quote my manual for the V56 electric stack. They are almost exactly the same except how they are actuated (manual vs. electric)

Quote

A bottle is pulled through the vend eyelet. The pulled bottle forces the gate forward and up. As the gate rotates, a lock bar is lowered to block out all bottles on the shelf. Also attached to the gate is a gate("S") lever. As the gate rotates, the gate lever pushes the captive links below it down. The captive links in turn push down on the master link. As the master link moves down, a captive bar is moved simultaneously. The captive bar has notches to accept the gate levers at standby position, so only the gate lever first to engage the captive bar is free to rotate. As soon as the captive bar moves downward, all other gate levers are blocked out. As the gate lever is reaching full rotation, the master link moving downward strikes the latch, which releases the spring loaded lock slide. The released lock slide will move over and contact the locking plate (attached to the master link). The lock slide has a lug which engages into a notch in the locking plate. This is a safety feature to prevent a customer from losing the bottle in case their hand slips before it completely clears the gate. As the bottle clears the gate, the spring tension on the master link will drive the locking plate past the lug on the lock slide. The lock slide locks into position under the locking plate to prevent the master link from being pushed down. The master link thus prevents the captive links from moving; the captive links prevent the gate levers from rotating; therefore, the gate will not lift up until another credit is established.

I hope this helps. If you can get your hands on a manual, I would highly suggest it. It will have a schematic and parts breakdown for the stack. The 56 and 81 stacks are not hard to do or that complicated. I take lots of pictures and notes when I break something new down and it helps me a lot when it comes time to rebuild it.

[JP White]

Guys, thanks to your help I think I have it!
The problem was with the springs.  The lower spring for the master link was connected to a link above rather than to the housing.  After I disassembled the stack I could see where the spring was supposed to be attached.  The assembly now has a force to move it to the vend position.
This stack still has a few issues but looks like one is out of the way.
Thanks again for the help.

JP

[JP White]

Sorry, I included the wrong image! '>

[Creighton]

Gald you got it working JP!! Jims is spot on as always the rack has been *modified*, but as long as it works for you, Cool!!
Creighton