Looking for wiring diagram for a 1959 No. 12, 70D grader with in cab pony motor starting.
I always like to help out when I can. I helped my daddy with these road graders in the sixties. We did most of the maintenance and all the repairs when they seemed to stop functioning properly. There were no safety stops or anything like that on the ones I remember. I can’t imagine how to assist on these. I don’t remember any fuses. A simple ignition switch check would be a starting place. Also battery cable need occasional service. So just enjoy that wonderful peace of history and check it out. Have fun sir
Look in the electrical section of your parts book.
Bob
Mine apparently has a field upgrade with a main disconnect. Got the info from Cat Technical with diagram(s). Further research found it was installed in 1972 after the cab was replaced. The machines second owner '69-'98 was a large outfit and wrecked the cab when hauling it under an overpass. May have planned on installing direct electric starting then? Always wondered why they gave me a brand new 24V starter when I bought it. Guess I know why now. Thanks for the assistance though.
Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.
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