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Re: Re: Re: starter/solenoid
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Posted by Jon H on January 01, 2004 at 11:45:44 from (69.26.16.85):
In Reply to: Re: Re: starter/solenoid posted by Gus on January 01, 2004 at 11:03:17:
Yes, the starter switch should be assembled dry.
I have added a Ford car type starter solenoid to several Diesel tractors to serve as an auxillary cranking relay.
With the extra relay installed,the (in my opinion) much to light for the load starter wiring needs carry only about 2 amps to energize the auxillary cranking relay instead of the 30-50 amps required to pull in the big starter mounted solenoid. The idea is to mount the Ford car type solenoid near the starter and connect the tractors small start trigger wire to the S terminal on the Ford solenoid to energize it. You then make up cables of 10 ga wire to connect from the original solenoids Bat connection to 1 large post of the Ford solenoid. Then make up another 10 ga cable to go from the other large post of the Ford solenoid to the original trigger wire post on the big Delco solenoid. Now your light original starter solenoid wiring need only supply a couple of amps to energize the Ford solenoid, and the Ford solenoid now feeds power directly through very short heavy cables to feed the 30-50 amps necessary to energize the big starter solenoid with minimum voltage drop. I have done this c0nversion on several early 4020 diesels and find it is stock on 69 and newer 4020 diesels( mounted under the cowl on the left side).
I would not use the Ford solenoid to carry full cranking amps of a big diesel starter,as they were not designed for that much amperage. The wiring system I described sends only the 30-50 amps necessary to energize the starter mounted solenoid through the Ford solenoid. The starter mounted solenoid is designed to carry the high amp load of that starter.
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