MEP 803A Starting Issue at Control Panel

[rar730]

So I have this 803A that when I turn the control switch to run all I get is a clicking sound at what sounds like the starter solenoid. However when I depress the booted armature (governor/fuel regulator) just above the oil fill and use the dead crank the motor starts and runs if I keep the armature depressed. I get power to the output lugs and convenience receptacle. I know that it is something simple that is causing this happen electrical and such and did not know if anyone else has had a similar issue.

 

[kloppk]

Are you turning the "control switch" (S1) to PRIME/RUN or START?
Need to turn it to START to engage the starter.

In the PRIME/RUN position the fuel pump is energized and makes a clicking sound.

 

[rar730]

Start switch completely turned clockwise in start mode. No sound from Aux or Primary fuel pumps. They did for the last 6 months, but all the sudden now just the click at start. Corrosion on terminals possibly from sitting outdoors?

 

[kloppk]

Do you have TM 9-6115-641-24?
It has a Troubleshooting section on "Fails To Crank" that will walk you thru how to troubleshoot the fault.

 

[rar730]

I do, however before I go through the task of diagnosing I thought that there may be an easier solution.

 

[Bmxenbrett]

Hold it in crank and fiddle with the diodes behind the control pannel. There lined up vertical on the back left behind the control pannel. There connection is just wite wraped around a post, not the best designed thing.

 

[jamawieb]

Maybe the actual switch itself is bad. The older plastic ones are known to fail. Someone else had this same issue about a month ago, there was a thread on it.

 

[DieselAddict]

Download the wiring diagram here - https://drive.google.com/open?id=0B2ucd1TGFTw_b0dqdURiS3lOZlU

Look at the letters in the triangles. Those are the test points that correspond to the terminals in the diagnostic plug. Look in The TM for the terminal designations of that plug. With that information you can do a LOT of troubleshooting very quickly.

In my opinion this is the absolutely easiest and quickest thing to do to narrow down your problem.

 

[Guyfang]

There is really, no substitution for proper troubleshooting. The sooner you crack the books, the sooner your gen set will hum.