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The two switches you need to use the Deoxit on are S6 and S8. You want to spray the Deoxit in ALL the little opening in the switches by EACH terminal. Here is a picture pointing out just two of the many openings on the switch's. The left arrow is pointing to one of the exposed switch contacts in...

Some droop shouldn't cause an overload. The MOV just helps the VRs Quad input circuit from shorting out wrecking the VR. That fuseholder in the pic is the fuse fir the convenience outlet. Some sets were made with GFCIs that didn't have the built in circuit breaker so that fuse was added to...

I believe breaking the bond in an 831 is accomplished by removing the small plate with the two screws in it on this board the output lugs pass through inside the 831

It looks like the 20 Gauge is M5086/2-20-9

The -24P TM will list the wire number used in the set.

Can't see the switch part number so I can't tell if it's the right switch. Could be its missing molded black jumpers to connect terminals 2 to 4 to 6 to 8. I'd suggest checking that S1 switching operation with the S1 Switch Schedule in the -24 TM.

Can you post a picture of S1 and circle or point to where terminal 7 is?

I suspect you were not on the CR1 leads based on your other voltage measurements. The labeling on the panel CR1 is mounted to can be confusing. CR1 is circled in RED

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 only have 2 available as of 4/17/25 4 already sold! 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...