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  1. R

    Gauges and Sending Units Caterpillar/ M1078

    The gauges are 24V for their operational/sensing circuits, but use 12V lighting… in the case of the oil pressure, I am assuming this is on an A0 truck, it is a stewart warner sensor. 506AZ… Again, assuming this is an A0, there is one main engine harness connector down along the drivers frame rail…
  2. R

    Interesting M1078 Cab Hydraulic Problem

    If the tire lift raises and lowers fine but the cab does not, and when you remove the return line it moves OK, I would suspect the restricted orifice in the cab control valve is fouled. If you remove the handle and unscrew the valve the restrictor is screwed into the core of the valve. Its an...
  3. R

    Poe Man's 1:1 hubs

    Same stress, but less frequent, as it is only really restrained by the clutch in mode when you would have a wheel in a place to slip...
  4. R

    Poe Man's 1:1 hubs

    Like I said in the other posting, this will keep the center diff clutch under constant stress in mode, and Lincoln locking the hubs involves more than just cranking up the welder… I am curious how that guy took the inner fixed gear out of the equation but still retained its function of...
  5. R

    ECO Hubs Who needs 3:07 gears?

    Uuuh dont think I would do any of that… First off the rear DS is not direct drive out of the transfer case. The trans output thru 3 large gears drives the planetary carrier of the center diff. The sun drives one pinion and the ring drives another pinion. The carrier spins the whole planetary...
  6. R

    Possible missing Bolt on plate at connection between engine and trans

    Thats the bell housing drain hole… the plug for it is seen screwed into its storage location. Unscrew the plug, and screw it into the open hole when you expect to be in deep water…
  7. R

    Torque rating

    I don’t think I misunderstood anything:) Not quite sure why you drug EPA into it, but the simple fact remains mechanical fuel injection is not self correcting, and without the proper tools to gauge changes, you can drive it out of balance and ultimately over fuel and cause damage, same as any...
  8. R

    Airlift/tie down bar steel grade

    I agree, I am sure it is decent quality steel, but probably nothing special, get what you can, or better still, find something to use it on and build it into a project instead of buying new… They do make handy hammock attach points…
  9. R

    Torque rating

    I would be surprised to see any engine or engine compartment made after 1980 that didn't have some kind of EPA sticker, not that it was difficult to get that sticker for a diesel then, as the requirements were not difficult, and basically the engine achieved the standards naturally/thru normal...
  10. R

    Torque rating

    Well if you already know all this why are you bothering to ask these questions... You do realize what happens to engine manufacturers whos engines fail to meet performance and longevity goals right? Expensive recalls and class action lawsuits. Which is why they actually proof them with...
  11. R

    Torque rating

    Yea, good luck getting your A0 to operate at 195 unless it is really warm out, as they had cat alter the cooling system for the A0, and not in a good way to maintain a steady temp(Youtube user Rronmar, i have a video there of the changes I have made to get a stable op temp) All manufacturers...
  12. R

    Torque rating

    And i laugh every time I see that:) is that engine still even running? Of course they never seem to report back on any failures... What happens when you deliver too much fuel? In diesels, particularly at lower loads, is that fuel builds up on the cylinder walls and washes down past the...
  13. R

    Torque rating

    I think the 225@2600 RPM engine is 620 ft/lb@1550 RPM, this from an eaton clutch spec catalog, as i have never been able to find the cat highway engine specs for this or the 290HP. Closest I find for the 290 is a spec from that same eaton catalog, for a 300HP@2600 RPM 3116 which is 720ft/lb, so...
  14. R

    How long can I go after Alternator stops working w/four 12v batts? and diagnising/fixing 200amp hummer alt on LMTV

    Yes, thats correct. The batteries set the tune and draw energy based on relative voltage difference and their internal resistance. Thats why AGMs want more, and can deliver more current. Tgey have a lower internal resistance. That is why you cannot just hook up any old alt to a LI battery...
  15. R

    How long can I go after Alternator stops working w/four 12v batts? and diagnising/fixing 200amp hummer alt on LMTV

    Charging is based on voltage output, and alternators typically dont care about state of charge, they only know output voltage. So battery is low and you give it enough voltage it draws current this causes alt voltage to drop, its reg builds the field and makes more output trying to get back to...
  16. R

    How long can I go after Alternator stops working w/four 12v batts? and diagnising/fixing 200amp hummer alt on LMTV

    that reg has an ign input so can be easily remote controlled How big is your service battery? ok Lithium changes the game for house charging. Must have a dc-dc charge controller, and you can tailor that to whatever excess your alternator will support. You could have 2000AH back there, but...
  17. R

    How long can I go after Alternator stops working w/four 12v batts? and diagnising/fixing 200amp hummer alt on LMTV

    They may not be capable of remote conttol, depends on the alt. Got a model number? The LMTV is unusual in that regard as remote generator control is usually an aviation thing. Most automotive alts do not have it, if they're turnin, they're burnin:) 140A@24v is a lot of power. How large are...
  18. R

    Gauges?

    Not sure, the LMTV uses 24v gauges with 12v lights, so rebuilding the panel can be a bit different...
  19. R

    How long can I go after Alternator stops working w/four 12v batts? and diagnising/fixing 200amp hummer alt on LMTV

    Yea I think you are remembering the numbers wrong. I think those are what that alt was capable of, 140A@24 and 60A@12. You don’t need a lot to make 12v from,24. The lighting load on a lmtv is 26A(33 on a 1079). thats only 13A@24v plus a little for converter efficiency. With standard lead...
  20. R

    How long can I go after Alternator stops working w/four 12v batts? and diagnising/fixing 200amp hummer alt on LMTV

    @24, You don't really need a very high output alt. 100A @ 28V is 2.8KW of power. A 100A alt would easily feed the OEM 240AH 4 battery bank In standard lead-acid. In fact it would just barely be past full load(108A) to feed that same bank if they were AGMs. A 125-150A alt would be great…...
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