I'm hoping someone on the forum can give me some help / advice.
A little history
: I have a Perkins 4.108 diesel
with a motorola 55 amp alternator
. About a week ago I turned on the ignition and the ignition circuit fuse blew. I took the starter out of the circuit and it still blew. The only other load on the circuit is the field wire to the alternator
. Disconnected it and everything worked fine - except the alternator of course. I removed the alternator and noticed that the field wire had some of the insulation
worn off and was apparently shorting against the case. Since I had it off, I took the alternator to a shop and had it tested. It tested good. I put heat shrink on the field wire and reinstalled the alternator. The engine
fired right up without blowing the fuse but no output from the alternator. I double checked the alternator connections - still no output. I disconnected the field wire and checked that it had 12 V from the ignition circuit. Still no output. Any ideas???