Thanks for all of the replies. I screwed up. After a short day of work I finally found the time to take off the torn rubber edge. Here is my conclusion. I had blind faith that the implement put the edge on correctly and never really inspected it before using it. My bad. :ashamed:
As TOMMAPLE implied, there are two steel plates/beams that sandwich the edge. The steel plate that mates to the plow side of the rubber edge has off centered holes that allow for support of the edge from behind so that the edge does not bend. If that plate is "upside down" it offers no support and just serves to attach the edge to the plow. This was one of the issues with my plow.
The skid plates if properly adjusted allow only .5 inch of space between the concrete and skid plate with the blade touching the ground. Adjusted this way, the rubber edge probably will not bend enough to tear like mine did.
Thirdly, the plow has brackets with pins that do not allow the "trip springs" to engage when the edge encounters an immovable object or in my case an uneven surface such as an expansion joint in the driveway with a higher adjacent surface. I noticed that my springs never triggered, but I just assumed that I had not encountered something with sufficient force to stretch the springs. I never noticed the brackets until today.
In conclusion, the edge tore because of my lack of close inspection of the plow and my over-eagerness to go play, er I mean work in the snow. I hope my mistake helps somebody else.
One other thing. Merry Christmas!
As TOMMAPLE implied, there are two steel plates/beams that sandwich the edge. The steel plate that mates to the plow side of the rubber edge has off centered holes that allow for support of the edge from behind so that the edge does not bend. If that plate is "upside down" it offers no support and just serves to attach the edge to the plow. This was one of the issues with my plow.
The skid plates if properly adjusted allow only .5 inch of space between the concrete and skid plate with the blade touching the ground. Adjusted this way, the rubber edge probably will not bend enough to tear like mine did.
Thirdly, the plow has brackets with pins that do not allow the "trip springs" to engage when the edge encounters an immovable object or in my case an uneven surface such as an expansion joint in the driveway with a higher adjacent surface. I noticed that my springs never triggered, but I just assumed that I had not encountered something with sufficient force to stretch the springs. I never noticed the brackets until today.
In conclusion, the edge tore because of my lack of close inspection of the plow and my over-eagerness to go play, er I mean work in the snow. I hope my mistake helps somebody else.
One other thing. Merry Christmas!