My 3 year old Kenmore trash compactor broke down when running the ram down. I pulled the compactor and got inside to see the 4 inch nylon gear that runs from motor to drive gear was broken in half. Wondering if just putting in a new gear will solve the problem. My thinking is that there must be a limit switch that tells the rams to run back up after compacting. The motor kept on running , but, of course, it couldn't move the chain to the rams. Help?
Many things like that (appliances, etc.) have owner's manuals... And also have "Service Manuals" which you can sometimes buy from the manufacturer. Other times they only provide service manuals to their service centers.
Factory service manuals usually explain how everything works, give circuit diagrams, have troubleshooting flow charts, and exploded views of various parts. (Sometimes there is a separate parts manual.)
For example you can order a Factory Service Manual set of 4 books for modern vehicles from a car dealer parts department for about $160.