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  1. R

    M1079 electrical help please.

    Well 98 would be an A0 with the cat 3116. Here is a 1 page start circuit drawing that might help. Good Luck!
  2. R

    M1079 electrical help please.

    well it helps to know the year/model? is it an A0 or an A1? With no crank, The first thing I always look for are what relays energize when the ignition is turned on, and what relays energize when the button is pushed. With ignition on K11 and k24 i think should energize, along with the low...
  3. R

    What have you done to your FMTV or LMTV today

    yea, 4.5-4.7 diffs would be outstanding, they would be nearly twice the size, but the gearing would be fantastic for our 7 speed:) If you are towing, all the added weight is NOT really enhancing traction. My little 3116 should pull 20K up a 41 degree slope in 1st. if I add a 20K trailer to...
  4. R

    Need some info

    I have not fully planned out A/C in my LMTV yet. The hard part will be placing the compressor...
  5. R

    Damaged PDP 1083

    Green circuit board type power panel? look around your area for a Amature Radio club. I suspect your local county emergency management department is associated with an amature radio club or ARES(Amature Radeo Emergency Response) group. i suspect they will have a member or two who can repair...
  6. R

    Need some info

    Well anything that dries the air is a plus. Was amazed the first time I encountered this, engaging the defrost in a 98 Mitsu eclipse GSX(Wife's midlife crazy car). Especially because the vehicle had a bad A/C clutch. I had to disable that interconnect for a while until I fixed the clutch, and...
  7. R

    Need some info

    The beauty of this military truck is it has a couple of light modes most of us will never use, like blackout drive and Blackout marker/signal lights. So there are already wires from lightswitch in the dash to the bumpers. In the case of the Toyota driving lights, I found some aftermarket ones...
  8. R

    What have you done to your FMTV or LMTV today

    From a practical standpoint, It shouldn’t really effect your low end. With 2:1 at the hubs, you are not really using your torque converter, you ramp right up in 2nd gear and shift into 3rd. The TC not being really loaded is probably why 3rd gear hits so hard… With the 2:1 removed at the...
  9. R

    Need some info

    Exhaust brake to help slowdown when rolling, warmup to add exhaust load to the engine when it is cold out… Air filter gauge is a vacuum gauge that gauges the resistance thru the air filter. Tells you when the filter is clogged… When it gets to a point it will latch there to show the peak...
  10. R

    Parking brake not releasing

    The treadle/pedal valve vent and the park valve vent are tied together to the floor port. Air constantly coming out of them indicates a bad treadle or park air valve. Air coming out of the red/emer glad-hand could be from 2 different sources. That gld-hand line splits and goes 2 ways. One is...
  11. R

    Parking brake not releasing

    Yea when that spiral line is connected to the treadle valve vent all that park vent air should go out the floor port above the radiator…
  12. R

    M1088a1 problems

    Yep, it is like having a basic scan tool on any other modern auto when it throws a check engine light or starts behaving erratically… without the reader, you have little idea what is going on…
  13. R

    Parking brake not releasing

    Yea I really love people who drive an 8 ton vehicle and don’t understand the brakes…:O
  14. R

    Parking brake not releasing

    Allrightythen… The pic with the short hose and pipe fitting and cap is your treadle valve. That capped line is connected to the valve vent. The treadle valve gets primary and secondary air from the tanks, and when you step on the pedal sends regulated air(more foot, higher pressure) to the...
  15. R

    Cab jack leaki

    HP5003-4204
  16. R

    What have you done to your FMTV or LMTV today

    Well done!
  17. R

    Cab jack leaki

    Yes you should be able to replace the pump seals. I think those pumps are made by Power packer.
  18. R

    M1078A1 cab and chassis electrical upgrades including AC

    Comparing actual BTU to electric power used is how they determine efficiency. In A/C it is mostly a factor of outside air temp and size and airflow of the condenser… 28F is a pretty large delta for an automotive A/C. you might could improve performance a little if you can find a way to cram...
  19. R

    M1078A1 cab and chassis electrical upgrades including AC

    Ok, here is a calculator for you. Add in any two fields(CFM and deltaT) and it will solve for the third. Such as 1000CFM @ 13F temp drop,is 14,040BTU. To measure flow you will need something to measure the air velocity. I have a small handheld weather station with a built in anemometer that...
  20. R

    M1078A1 cab and chassis electrical upgrades including AC

    I think the detail you are missing is that the watt to BTU conversion(3412BTU/KW/HR) is ONLY applicable when you are CREATING heat directly from electricity. IE: A 1KW/HR heating element will deliver 3412BTU/HR of heat into air or water… refrigeration or Air Conditioning is not “creating”...
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