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Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 26014
Experience:  Technican turned service manager with multiple lines of equipment and rental units.
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PC 100-5 Komatsu excavator no power from key to starter

Customer Question

PC 100-5 Komatsu excavator no power from key to starter replaced battery relay still nothing. lights stayed on in console occasionally but now nothing no click in battery relay or anything
JA: What is the complete model and serial number of your machine?
Customer: PC100-5 serial number 33058
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: Is there a safety relay on this machine controlled by a diode in alternator
Submitted: 16 days ago.
Category: Construction and Road Equipment
Expert:  Curtis B. replied 16 days ago.

Hello! Let's see if we can work together and come to a satisfactory conclusion!

Expert:  Curtis B. replied 16 days ago.

D you have a voltmeter or a test light , to see where voltage is lost? Look at the starter area, as this is where voltage for the dash comes from. The power comes off the positive battery cable side of the starter solenoid. Look around the starter ground for a fusible link, that can be blown, so the circuit is not complete.A fusible link will look like a fuse soldered into a wire,usually ground wire. Jump around it for test.

Expert:  Curtis B. replied 11 days ago.

I see question is still open, did you find the break of current? Please rate to close.

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