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Questions: Need to see the wires connected to the K1 circled to the left. Picture and wire numbers. Also - where the F is the large wire circled on the right going? That looks like it should be feeding K1 possibly?!?

It appears you may be on the wrong diagram. Also looks like that picture I posted is a picture of K2..... I'm having him get a picture of K1. This is the diagram that should match our trucks:

This truck should be 100% LED like mine. Doesn't have door markers (A1R's don't have them). But that's a good call to pull out the other CB's and see if we can narrow down the circuit that's the problem.

Right - I knew the K11 NC contacts powered the E terminal and so I had him pull it to see if it was in fact still being powered and thus not sending the excite signal to the VR. The idea being if it clicks when you insert it (while running) then obviously the issue is that K11 isn't...

I misread your question. You need to cage all the rear wheel chambers - they all have parking brake springs. The front axle chambers are the ones that don't have parking brakes. Any chamber that has a caging bolt hole on the back will have to be caged.

They do all use the same oil pump. The listings I see show the same pump being used on 3116, 3126, and C7. So potentially yes the 3116 could have the older pump design and could be upgraded to the gerotor pump if needed or desired.

Just the parking brake chambers.

Ok I've been talking to 1pineapple over the phone on this issue. So the truck has three major issues at the moment - the ignition switch does trigger both ignition relays and they do click. But there's still 24v on 87 and 30 on the 24v relay so the truck doesn't shut down. Given that someone...

Yeah they switched from a gear pump to gerotor pump. They must have had reason to do this so probably worth changing it out if it has the older style.

Oil drain plug?

Thing is - unless your engine is a leaking, oil burning mess you'll save money with synthetic and bypass filtration. I put in Amsoil 15w40 MAX and a bypass filter and I have no intention of ever changing the oil again. What's your time worth? What's your HEUI system worth? Do the math and decide...

I run Amsoil 15w40 Max Duty full synthetic. The expensive HEUI pump and injectors relies on clean oil. As for rattling like rocks in a can - I have nothing like that. Engine sounds great.

With 370 HP and 931 Ft/lbs my truck gear limits at 62 mph - and it gets there in a hurry! You hit the engine and transmission red line and that's all it's got - mathematically impossible to exceed with the engine and transmission programming and probably not smart to exceed the engine red line...

The problem here is the "oil line of death" is so named because it HAS caused engine failures since it will pump the engine dry in a very short period at 2600 RPM cruising on the highway and goes unnoticed till it's too late because the leak is below and behind the operator.

Or a valve cover from one anyway. o_O Just to introduce another layer of confusion and uncertainty. Bolts don't look molested though so yeah - probably a 1999 production engine. The engine on my 2008 was made in 2008 but maybe in the earlier years they had engines sitting around for a while...

No. The 3126 used on FMTV's were all 3126b's. Only the mechanical 3116 used on the A0 has the oil line issue.

Many ABS systems will complain if they see differing wheel speeds and the codes will typically self clear. It could be the case on these as well. We have that problem a lot at my shop working on vehicles when we run them on a lift and wheel speeds are all over the place so the controller just...

Doesn't apply to the 3126b or the C7. They are HEUI engines and the oil feed to the HEUI pump is a hose (also much longer) not steel tubing.

The software is out there. Just not on this forum. PM me and we'll get you squared away. CAT ET is out there. Again PM me and we'll get you sorted out. The DANA CTIS diagnostic software is actually free to download on their site. Allison Doc is an issue I'm still working on. Even the...