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Cat specced a pair of group 31 batteries for these engines, you really don't need any more unless you have electric loads to feed when the engine is not running. A single pair of the original 6t batts will be more than fine… the LBCD senses generator overload and disconnects the batteries. I...

Exactly, lots of technical hurdles...

No thrust forces(outward) because the inner gear is just resting on the spindle splines with its inner face against the shims and its pins holding the wheel nut in place. If the spider gears were in place, it would have been thrust inward against the shims and wheel nut, but there is nothing on...

No, not really The upper frame rail has 4 box/pockets welded on it where the box subframe attaches with bolts and springs. The 1078 bed attaches to the frame a little differently. The truck chassis are the same, with one additional wiring harness used to connect the box to the power panel…

I think the spider hub probably would have retained the inner gear, even with the spiders and their shims installed there does not appear to be much clearance between the spider hub and the inner gear As seen in the pic Geo posted… He could have stacked shim washers there also, there should be...

The inner gear just slides onto the splined hollow spindle. I suspect he simply relied on the spider carriers center hub to keep the inner gear flying in formation to retain the wheel bearing nut…

Ok, it looks like he welded the outer gear to the cap, which would tie the splined axle to the hub… but this doesn’t show how he retained the spindle nut….

Exactly, lincoln locking it would require more problem solving/engineering. I looked into it as an option I could do myself way back when i was analizing deleting the hubs, but never solved all the issues and had to shelve the idea to finish building my house. Mike produced the eco hubs...

Yep read the manual. Was that a typo,and you have a 98 1079A0? With the 2:1 hubs, the first 2 gears(2nd&3rd) are still pretty tall. Lightly loaded it usually bangs thru them pretty quickly until 4th and 5th start to decently load the engine. It could be the transmission TPS is out of sync...

@patracy i cannot attach pics in messenger, so will post them here. Not gonna make me feel guilty. People don't come to forums for the advertisements, they come to find information and get questions answered, and I do a fair bit of that… For free I might add… probably have even helped...

Having adds you can scroll past on the margins is one thing, but the popup adds and fake add lure buttons(big button labeled “next” with an arrow) Imbedded in discussions are starting to get distracting and tiresome…

The problem I see with the locker method is the inner fixed gear is also the retainer for the wheel nut. Since it is fixed to the splined end of the hollow spindle, it must be removed, and something else used to retain the wheel nut, or it, and/or the spider gears must be very heavily modified...

If your current speedometer switch settings are, 1101100101 The new dip setting from the charts for 1/2 the input frequency/calibration number for eco hubs should be 1011001011 or 1,3,4,7,9 & 10 switched on…

The A0 CTIS uses the same pulse signal as the speedometer. I suspect it is un-conditioned pulse info right from the xfer case sender as i have seen nothing in the little bit of WTEC 2-3 programming i have seen that indicated that it was adjustable/scaleable in the TCU.

Yep, no ctis warnings anymore untill ypu hit warpspeed. The CTIS controller may be able to be reprogrammed. I forget what year/model truck do you have?

Well group 55 are C3 pressure faults so something is going on with pressure or sensing that pressure. that temp light is a programmed output generated by the controller and based off of its internal temperature sensing circuitry(sump temp sensor on the control module). The manual says it is...

Thanks For the report. The only place 2x hubs are a benefit is if you are trying to start and move a VERY heavy weight up a very steep incline In 1st gear. Everyplace else they really are a hindrance. Removing them also removes the ~10% of power transfer loss those gearboxes incur in...

No its not the same sensor. This the gauge sensor. The other sensor is the 15 PSI low oil pressure switch that drives the low oil light in the dash, and relay K11 that controls alternator excitation after the oil pressure opens that switch when running…

Define overheating? How are you determining/measuring that heat? Is it storing any codes? when you drain and refill the oil there is still a considerable amount of oil left in the torque converter and galleries, cooling hoses and cooler and maybe some in the transfer case scavenger pump...