Start by attempting to shut off and then turn on the Caterpillar 268B skid steer loader. Note if the machine has difficulty turning on or staying on as this could indicate a problem with the electrical system.
Clean all of the skid steer loader's electrical lines with a cloth. The Caterpillar 268B skid steer loaders are designed to have a more user-friendly electrical system where electric lines are easily accessible. Wipe off any excess dirt or debris the electrical lines as well as their connections within the machine.
Secure all electrical connections and lines within the skid steer loader. If you find any loose connections, re-tighten them. As you are securing the electrical lines, check for any frayed wires or damaged areas within the lines.
Write down any connections that may need to be fixed. Reference each particular connection with the Caterpillar 268B manual to determine the electrical issue. This is important to gauge whether or not it is a simple repair, such as replacing an outlet plug or a more serious electrical issue that will require professional assistance.