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Check that diode CR1 has about 24 volts on each lead under the test conditions. Does it? If it does, then it appears to be an issue getting 24 volts from CR1 terminal 1 to the S10 Dead Crank switch terminal 2. The path from CR1 terminal 1 to S10-2 is... CR1 terminal 1 to J6-33 via wire 120B...

OK, same conditions, check voltages at both big terminals of MT4. It's the shunt mounted in the front right corner of the "floor" behind the gauge panel.

Terminal 3 of S10 should always have about 24 volts on it when it's set to NORMAL. You posted it drops from 23 to 0.5 volts when you move S1 to Start/Run. That's a problem. Check S10 terminal 2 and see if too drops from 23 to 0.5 volts when S1 put in Start/Run. If it does drop to 0.5 volts...

Stop It looks like a possible issue with Dead Crank switch tho they seldom fail. Away from my computer so I can't look things up at the moment.

OK, this likely indicates there is high resistance in the path to get power from S10 (Dead Crank Switch) terminal 3 to S17. So do the same check with the conditions I posted above at S10 terminal 3. If you get about 24 volts with S1 in Prime/Run and Start then there is an issue between S10 and...

First I'd suggest testing to be sure there is continuity between the AC adjust potentiometer terminals and the inverter. P17 is the long white-ish plug near the top of the engine side of the inverter. P7/J7 is the large round circular connector pair from the engine bay into the control cube...

CR5 has no bearing on engine cranking. It's just a flyback diode for the FSS. Test for about 24 volts DC with respect to chassis ground along the following points leading from S1 to the starter with Battle Short OFF, Dead Crank in NORMAL and S1 in START. Be sure the Emergency Off Switch is...

Do you have a handheld voltmeter, and do you know how to use it to make DC voltage measurements?

Bypassing the switch by disconnecting the wires and putting a jumper across the two wires will cause a High Temp Fault. Remove that jumper and leave the wires disconnected and try it. The high temp switch is OPEN during normal temps and is CLOSED when the coolant temp gets too high.

:ROFLMAO:

Some MEP-831A users have experienced flames coming out of the exhaust and possibly cracking of the exhaust pipe. If you find this occurring with an 831A it’s caused by incomplete combustion of the diesel fuel that is then being forced into the muffler. The incomplete combustion can be caused by...

AAMPS DCS Control Assemblies NSN 6110-01-588-4725 Cummins Part Number 04-20442 I currently have 6 available as of 3/9/25 They will work in MEP-1030, MEP-1040, MEP-1050, MEP-1060, MEP-1070 Gensets They automatically configure themselves when installed in an AAMPS genset. The DCS's were tested...

The -24 TM has the tests for testing the Fuel Level Sender and the Gauge to determine what the issue likely is.

The leftmost "Relay looking" thing is S14, the Frequency Trip Switch. Inside of it you should see a green circuit board and components on it. If it's missing or defective it will prevent the starter from engaging when using S1. K12, K15, K16, K19 & K20 are all relays and are the same part...

Same result... You'd need to set Google Drives video files access permissions like this (as seen on a PC)

I get this when trying to watch the video. You ought to change the permissions on the file so people can view the video.

Absolutely necessary. Do NOT run the generator without the Fuse Mod installed. Running without it you risk the AC Voltage Regulator shorting out and burning up the generator head.

For the 802A part lookup you'll want to use TM 9-6115-641-24P Here are the parts for the Oil Pressure sender (item 7) area in that TM The following page lists the part numbers If you then search the TM for "02504" you'll find the NSN number 6620-01-128-3053 Then, if you go to...

Is the mag pickup (MPU) adjusted properly and providing 2-3 volts AC across GC terminals 16 & 17 when dead cranking the engine? According to the info below the DC voltage across GC terminals 9 & 10 may give a clue. This is the voltage sent to the actuator to control engine RPM. When initially...