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It only takes about 8PSI To open the wheel valves for deflation. The reason for the high pressure point I think is to 1. tell CTIS that the air system is functioning normally/is capable. 2. To allow it to regularly top-off the pri/secondary brake tanks. CTIS and these huge tires are a...

What Simp5782 said. they modified the LMTV cooling to send bypass coolant to the trans cooler/heat exchanger, which is why these engine take so damned long to warm up(gotta get the trans warmed up also). it doesn't look too difficult to mod a standard 3116 pump as they simply cutoff the...

you have a blown seal(oring) in the cab latch. You can disassemble it and replace the seal, but that latch needs to be sealed in order to send pressure on to the lift cylinder. You can remove and cap the line and manually pull out the pin from the end to tilt the cab, but you should be able to...

You could do it with two switches and a double pole/2 contactor relay. Basically relay power would come thru the high switch set to close its contacts at 115-120 PSI to initially energize the relay. One set of contacts would provide the contact closure to CTIS. The second set of contacts...

Well that switch probably does not have the hysteresis range to do the trick. The correct switch is special. It closes its contacts When the pressure goes above 115 PSI which is right before the governor cuts off the air compressor at around 120. This tells CTIS the wet tank is full and tht it...

The chem detector is a standalone module, setting there with a detector panel facing skyward looking for aerosol chemical droplets... That 4wire connector provides power from CB30(Un-switched 24v)And ground to TB2 in the PDP. It also provides an alarm output to a connector labeled P99 which is...

Yep, What awesomness said. that mount on top of the air filter is for the chemical Detector and the wiring is for its alarm/control. The troopSwitch connector is in the harness...

Yes, you need to pull/remove both pins from each suspension cylinder. You want to cycle the raise/lower valve back and forth to release any trapped pressure in the cylinders otherwise the pins might not move. Once you depress the little button on the end Of the pin handle, they should pull...

5 solid lights means the CTIS controller/processor is toast. You can replace it, unplug and go without it Or configure for manual control, either with air or with electric(pushbuttons) which I did as my controler had 5 solids as well... search here for those manual CTIS writeups... my lower...

I should add that the only time air causes an issue in a diesel is if the injectors are hydraulically fired. IE: the injector pump is separate from injector and the fuel is pressurized to a point where it overcomes a spring loaded poppet valve in the injector to fire. Cant compress liquid, but...

Had a leaking bowl And slow leak-down and replaced the primary filter with a Baldwin BF1222(one piece with drain port). For giggles I didn't pre-fill the filter. Pulled the inlet line to the governor and started pumping. It took 12 pumps to lift fuel from the tank till I started feeling fuel...

which is why the later/larger LMTV alts are not necessarily backward compatible as they interact with the LBCD which the A0’s do not have...

Probably a matter of low up count = no liberty... This usually inspires the bright lights to figure out ways to get the easy fix, waiting on parts rigs back on the line... I would think that prep for DRMO would be to halt the repair where the list of problems pushed the truck into the survey...

I think the term you are looking for is "Field Expedient Repair"... :)

Ok, well if it has a crimped cover like in Andy’s pic, I would say it is a vent. Does yours not have a crimped cover?

The one on the compressor is the fresh air intake. It should have a hose on it that runs up to the main air pipe that comes off the inboard side of the intake air filter. This is where the compressor gets filtered air from, you need to replace it ASAP Before dust kills your compressor... the...

What wheelspinner said...

The only benefit I can see with the molded corners is it allows the outer/surface lip seal to lay out a little flatter against the skin on the lower corners. Probably not a big deal... as there are several lip seals that contact the body down in the window recess/opening...

Thanks for the followup. Pretty common problem on older fords(harness to valve cover and manifold studs)... Everyone who owns one of these should have some jumper wires made up. Male spade to male spade about 3" long(can bypass any failed relay), male spade to spade about 9" long(can jump...

with the cat design, I think you would be more likely to find fuel in the coolant or vis versa with a seal failure, then excess fuel in the oil. All diesels ultimately wind up with fuel in the oil, low engine loading and low op temps can cause more of this... The MUI and HEUI injectors both...