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After looking at the main components of the Infinity 4000 cover system we are now going
to have a look at the dog drive mechanism that sits here in the middle of the cradle.
This shaft connects the motor gear box to the pulley drum and the main roller. This
is a right hand drive system so just to show you how it works we will turn it over and
it would actually be running this way. What happens is when the motor is running this
direction it engages this half of the dog drive and this one becomes pushed out of the
way and it would be driving the roller now, opening the pool. When the motor turns the
other direction it disengages this cog as you can see and it will re-engage this one
which is now attached to the drums and it will close the pool. This is a very simple
mechanism but it is very very efficient. Really any problems you are going to get is if the
pin breaks in the middle which is very unusual but would have to have a lot of tension on
it to snap that pin or this one here where it is bolted onto the shaft of the motor again
if the bolts break. But if you've got situations where the pins and bolts are breaking you
must have got some real problems with the cover. As I say it's a very straightforward
mechanism. It works very efficiently and it's the main drive part of the mechanism. These
two halves are bolted on to the drum and one onto the roller. And they are bolted on with
four allen keys and they are actually all marked with a little indicator if they are
Left or right. Hope that's given you some sort of insight into dog drive and how it
works but if you have any further questions please do not hesitate to contact us.