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  1. D

    The MEP-831 goes to the track

    https://24hoursoflemons.com/blog/electric-rally-car-jet-electrica-007/
  2. D

    The MEP-831 goes to the track

    Nice. LeMons is on my list of life goals. Some day I will build an appropriate lemons car by swapping a GM diesel into a Trabant or a Gray marine engine into a Camaro.
  3. D

    The MEP-831 goes to the track

    LeMons, car 571? It looks like you guys drove well.
  4. D

    MEP 831A Fix-up Thread

    Yes, that is from the 2kW TM.
  5. D

    MEP 831A Fix-up Thread

    I think the hour meter is the same as in the 501/531 2kw units. If so, look for something like 10 to 40 volts DC.EDIT: From the TM, work package 0039 HOURS METER: INSPECTION, TESTING, REMOVAL, INSTALLATION"TESTING1. Release instrument panel by turning fastener. Open instrument panel slowly.2...
  6. D

    Mop 531a no start

    The line into the injection pump is 5/16 ID. Clear line definitely helps you bleed out the air between the filer and the pump. Someone posted some pictures of where a cable tie should be placed around the hose and the hard metal line to ease bleeding air out.
  7. D

    Electric connector nomenclature

    Those look like Class L receptacles. Look for MIL-DTL-22922.
  8. D

    MEP-531A HZ Frequency Meter

    Any updates?
  9. D

    Generator Output cable ID

    That cable receptacle looks like a 32 shell size class L. That size is a weird one. According to my Amphenol Class L PDF, the 4 contact size 32 is for single phase AC (2 wire - hot, neutral) with two ground contacts and a 60 rating...
  10. D

    MEP-531A HZ Frequency Meter

    57Hz will run most consumer electronics. With that said, that engine should have no problem turning fast enough to put out 62 or 63Hz. I have seen a few 2kWs with wet stacked exhaust systems that can severely limit power. Pull off the spark arrestor and look for clogged discs and carbon build...
  11. D

    MEP-531A HZ Frequency Meter

    Verify the volt and frequency meters are reading correctly by checking with a DMM. Let us know what you find.
  12. D

    Power Plant Wiring

    Those mil Class L connectors (MIL-C-22922, MS90555) are ridiculous. I like the plastic body IEC 309 pin and sleeve stuff but I don't know if any versions have the control wiring in addition to the high current contacts.
  13. D

    Anybody done this? Mep-531a/Mep-501a conversion

    The L48s in the 501 and 531s have a J609A interface. Northern Tool currently has one J609A alternator, item 1659200, which appears to be from the Mecc Alte S15W line. These are capacitor regulated which means no external regulator or brushes to worry about. The downside is that adjusting...
  14. D

    5/16JIC/5-AN to anything adapter

    Parker has a bunch of JIC to NPT adapters available. 5-4 F6X-S -5 JIC female to 1/4NPT male 5 FTX-S -5 JIC male to 1/8NPT male 5-4 FTX-S -5 JIC male to 1/4NPT male 5-6 FTX-S -5 JIC male to 3/8NPT male 5 GTX-S -5 JIC male to 1/8NPT female 5-4 GTX-S -5 JIC male to 1/4NPT female Eaton...
  15. D

    Mel-831a Fuel gauge

    It looks like we have used that fuel gauge for decades. I found part number MS24544-2 after poking around.
  16. D

    Mel-831a Fuel gauge

    Lots of old military vehicles use a 0-30ohm sender (0 empty, 30 full). I believe 0-30 was an old GM spec so you should be able to find something suitable as long as people still build older GM V8 powered hotrods.
  17. D

    803a access doors

    Southco and Eberhard are OE for lots of mil door latch and hardware applications.Southco https://www.southco.com/en-us/ Eberhard http://www.eberhard.com/
  18. D

    MEP952b will not start.

    Yep, more details please. Does the electric starter crank the engine? If so, open the top doors and find the solenoid on the throttle lever. Does it go down and stay down as you crank the engine? Does it have fuel all the way to the mechanical pump on the engine? The 952B fuel system isn't...
  19. D

    MEP 831 FAQ for owners or potential buyers

    My application manual for Yanmar engines says the taper is 2-1/4 inch per foot for the L series engines with a tapered shaft.
  20. D

    MEP 831A parts needed

    Check your PMs
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