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  1. Keith_J

    Design flaws? Torque rod, split rims?

    Split rims are FAR EASIER to change tires on in the field. You can do it with a maul, pry bar and a half dozen 4" sections of 4" angle iron. The rims on the M35 are safer than traditional split rims, the outer flange is a solid ring, only the captive lock ring is split. Back in the 1980s, we...
  2. Keith_J

    MEP 017a Low Voltage output ?

    I knew it, you are a plumber of electrons :deadhorse:. Getting back to the generator, it is unlikely that exciter-field diodes are bad, more likely it is just inadequate engine speed or the variable resistor is weathered on the wiper. I've already suggested a remedy for the latter, it worked...
  3. Keith_J

    MEP 017a Low Voltage output ?

    Yes, Pete, I know the primary charge carrier is the electron which is a negative charge. This is Steel Soldiers, not physics forums. Besides, I left enough ambiguity in my diagram to allow for the negative charge carrier convention. Only if you are a polymath and know a bit of hydraulics...
  4. Keith_J

    MEP 017a Low Voltage output ?

    Don't need to spend ANYTHING to check/inspect so keep your wallet in your pocket. On the variable resistor, they get corroded on the wiper. A shot of WD-40, then run the knob back and forth a dozen times, then another shot should work wonders. Yes, WD-40. Ok, you might have to buy that. If...
  5. Keith_J

    MEP 017a Low Voltage output ?

    I guess a little course on how these generators work is warranted. If you had physics back in high school, you know that a magnetic field moving through a coil generates electricity. In both automotive alternators and these, the magnet moves and the magnet is an electromagnet. Unlike the...
  6. Keith_J

    MEP 017a Low Voltage output ?

    For the 002A, sounds like either the high temperature or low oil pressure switches are breaking continuity, causing the fuel cut-off solenoid to lose power and shut the engine off. The low oil pressure switch is supposed to break at 12-14 PSI. The switch made by Hobbs is adjustable, pull the...
  7. Keith_J

    If We Could Get Glow Plugs More Cheaply

    I could use a few just for prescribed load list purposes. Mine are fine and I rarely need pre-glow for starting.
  8. Keith_J

    MEP-002A Testing A1/K1 or CB1?? Huh?

    Is there any damage to the output control box? S6 mounts to the front and back, stress from a dented control box could cause hangup. Try loosening the bolts attaching the switch to the front and back of the box (don't remove, just loosen) and see if that helps.
  9. Keith_J

    tapered ferrule for winch cable hook...

    Best bet is to go to the Crosby catalog and find something new. Reusing old wire rope fittings is a gamble. If the wire rope is corroded, best to replace and maintain new rope. Sure, it is only a winch. But there is still a lot of potential energy in that wire rope with five tons of force...
  10. Keith_J

    Frustrated with starting MEP003a engine

    Also check each electric fuel pump as they have fine strainers and once plugged, no fuel flow. I doubt the main filters could ever clog before the fuel pump strainers are totally clogged. Also, if the gaskets on the bottom of these pumps are leaking, poor fuel delivery is a problem. These are...
  11. Keith_J

    Working on the M37

    I see color being shot! Give you a buzz in the AM.
  12. Keith_J

    Frustrated with starting MEP003a engine

    I've seen quite a few with newer Onan engines, look at the blower wheel cover for an Onan tag. My guess is a bunch of them got new/rebuilt engines due to warranty issues. My 002A was originally made in 1986 yet has a 1996 Onan engine. Plus repainted and data/instruction plate reinstall...
  13. Keith_J

    Frustrated with starting MEP003a engine

    What is the compression like? You can try turning it over with a 12" ratchet (clockwise only), if it is difficult, compression is adequate. If not, check valve clearances. 10 thousandth's intake, 7 thousandths exhaust. Covered in the -12 TM. Are the glowplugs working? All the 002As I have...
  14. Keith_J

    MEP-002A Testing A1/K1 or CB1?? Huh?

    Try this:MEP-003A Selector Switch Locked UP !!! - SmokStak
  15. Keith_J

    MEP-002A Testing A1/K1 or CB1?? Huh?

    If you feel brave, go for it. Realize S6 also connects the voltage and current meters on the panel for correct read-out. Table 6-5 in the -34 TM is intimidating. Don't forget the fixed jumpers on the switch, covered on Figure 6-10.1/2 depending on what switch you have. I'm thinking your...
  16. Keith_J

    MEP 002A is ALIVE!

    I'm using the corrougated split type conduit. Got a supply of the Nylon stuff, black so it blocks UV, unlike the clear that was on the wiring. Transitions are wrapped with Scotch rubber mastic tape 2228, a thick, self bonding material that stretches and conforms, never getting stiff or losing...
  17. Keith_J

    MEP-002A Testing A1/K1 or CB1?? Huh?

    Looks like you indeed have a problem. What ever you do, photograph and tag before disconnecting. Also verify wire identifications with the TM. As the SMR code is PAFZZ, this indicates no repair authorized (Z in the 4th position). PA means stocked item so new old stock may be available but...
  18. Keith_J

    MEP 002A is ALIVE!

    My digital read out meter idea just became a bit closer to reality. I found a cheap way to convert the 0-180 micro ampere transducer output into a millivolt output which matches frequency. Meaning the $9 millivolt meter from Marlin P Jones is perfect. How you ask? First, the transducer...
  19. Keith_J

    MEP 002A and 003A

    Another issue not addressed in the TMs or LOs is oil level with respect to listed quantities. These engines have oil coolers which have a thermostat, the TM states oil is to be changed while engine is hot. Not specified is why, the hot oil lets the oil cooling system drain fully. Likewise...
  20. Keith_J

    M35A2 Brake Master Cylinder

    Polyethylene tube with compression fittings works well for this application. It doesn't need to go to the draft tube, that was done for fording kit operation. Routing it to any dry place away from road dirt is better. Home Depot sells the compression fittings with brass inserts and the poly...
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