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  1. 74M35A2

    Fuel rack snap-back

    Vehicle / engine? If an 8.3L, how old are you batteries? The fuel cut solenoid will not hold open well as cranking voltage declines, even though starter speed stays consistent, so it is a very misleading situation and takes 2 people to see it happen. New batteries, even if group 31's, are...
  2. 74M35A2

    Level Wind maintenance anomoly, Front Winch

    I love the look of a level-wind. I bought one and added it. Then, I absolutely hated how much more difficult it made it to free-spool out the cable. When I am stuck, it is going to be in 4’ of yuck, and that is not when I want even more of a physical challenge. I then removed and sold it due...
  3. 74M35A2

    Manual 5 Ton?

    Always OK. May be full, I’m obscenely popular. Not.
  4. 74M35A2

    Manual 5 Ton?

    Correct on the Detroit’s. I have 2 used ones on a shelf.
  5. 74M35A2

    Manual 5 Ton?

    Will only go faster if the engine has the power to pull it. The dual shaft Road Ranger transmissions are typically shorter than the Allison MT654CR 5 speed by a few inches, yet wider. M936 wreckers use 2 PTO's, one on the trans, a second on the transfer case, I think.....
  6. 74M35A2

    Manual 5 Ton?

    There are 5 things that contribute to top speed: Max engine RPM Transmission top gear ratio Axle ratio Transfer case ratio Tire height (outside diameter) This is all assuming the engine has enough power to reach max governed RPM under load.
  7. 74M35A2

    M925A2 Delco Style Alternator

    Happy to help.
  8. 74M35A2

    Adding a block heater and coolant filter on 6CTA 8.3

    I’m impatient. I yank the lower hose off the radiator when I’m doing a water flush. Would recommend a Cascade flush before you added the new coolant, but I think you are already done? How are you putting the filter in? Series or parallel with the heater core? I think it typically goes...
  9. 74M35A2

    M925A2 Delco Style Alternator

    Correct on your #568. This is also why the civilian unit is a much superior unit. Some of the modern civilian ones can use an external remote sense, but if nothing is detected on this wire they default to the internal setpoint. The military one would instead just go full field because it...
  10. 74M35A2

    M939 Modifications/Upgrades

    Costs? Can hurt a little more when individuals vs a company is buying. I've kept my throttle linkage well lubed and changed the return spring config, it works perfectly, and love the poor mans cruise control as well. Heater performance can be a drag. It is a combo of a cab that seals...
  11. 74M35A2

    M939 PTO information

    Where does the recommended 1800rpm limit come from for operation of the M939 PTO/hydro pump? Also I have stuck my 925a2 in 4’ of mud, and the winch pulled it out effortlessly in neutral only. I don’t see many cases of where one would have to spin the tires as well, though it may help? Have...
  12. 74M35A2

    M939 with tac4

    Solid conventional 5t axles with e-locker diffs. Wonder who made them, nice. Think if I called Rockwell they would tell me? That was a long time ago now, those people are likely retired. Best set of luck on your sale. Thanks for the info.
  13. 74M35A2

    M939 with tac4

    Looks like they run a front mount charge air cooler, Bosch P-pump, and exhaust brake. Also has the civilian spin on engine coolant filter. Engine is probably 300hp as a guess configured like that.
  14. 74M35A2

    M923A2 Fuel Issue

    Fuel should likely exit anytime the pressure exceeds the overflow valve spring pressure. This is the squeak you hear when pushing the primer on a non-running engine.
  15. 74M35A2

    M925a2 transmission line routing

    Pics sent
  16. 74M35A2

    M925a2 transmission line routing

    I'll do mine when I get home tonight. Stay tuned.
  17. 74M35A2

    use of prime/lift pump. 8.3 motor

    Usually when the soft lines leak air they don't show anything externally. It will look like a perfectly normal hose. Even when pressure tested only some of them will bleed fuel, some will not. Cheap enough to just replace and be done with it.
  18. 74M35A2

    Killing while idling.

    Have the soft lines to the injection pump every been replaced? Nearly all suck air by this age, yet they do not show it from the outside at all. I don't remember seeing it mentioned in the thread. I know it is easy to sit here at our desks and tell you what to do, but these are some pretty...
  19. 74M35A2

    M931a2

    When wires are over-loaded with current, they become fusible links. Too many amps. :)
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