Mav’s M1088A1 Conversion

[serpico760]

QA is always watching haha

Don't forget to install a Chucky brace with the cab flipped forward! We don't want anyone else getting the FMTV love squeeze of death!

 

[serpico760]

Hey thanks, I was trying to find the dude who installed an electric hydro pump and this is him so thank you for that. Also interested in that little dryer as well so searching for some more details on it. Not really a fan of the the tank setup but definitely some good ideas throughout.

EDIT: I found the dryer but it’s 12v. Still brings up a good thought on replacing the OE dryer while I’m in the process of relocating. Gonna keep digging.

Yeah I was hoping he would drop some more videos after he finished the initial semi-complete build of his box but he's kind of dropped off the radar... Life happens and gets in the way of our plans sometimes...

 

[serpico760]

Hey thanks, I was trying to find the dude who installed an electric hydro pump and this is him so thank you for that. Also interested in that little dryer as well so searching for some more details on it. Not really a fan of the the tank setup but definitely some good ideas throughout.

EDIT: I found the dryer but it’s 12v. Still brings up a good thought on replacing the OE dryer while I’m in the process of relocating. Gonna keep digging.

Here's a 24 volt one I found online. I don't know if it's compatible with hosing sizes and capacity etc but anyway here you go

https://www.amazon.com/AIR-DRYER-VOLT-AD-9-STYLE/dp/B07583F29H

 

[Mavcaster]

Looking at this fuel pump to transfer fuel from the driver side aux tank over to the main tank when it gets low.

Holley 12-170 100 GPH Universal In-line Electric Fuel Pump

Holley's 100 GPH (gallons per hour) fuel pump is designed for high performance naturally aspirated and forced induction EFI vehicles It utilizes -8 AN female inlet and -6 AN female outlet connections for easy installation on new applications and for quick replacement of existing competitor fuel...

www.holley.com

 

[chucky]

If you want the tanks to be the same level all the time just put a crossover line on the bottom of both tanks and gravity will do the rest like on twin tank semi trucks

 

[Mavcaster]

If you want the tanks to be the same level all the time just put a crossover line on the bottom of both tanks and gravity will do the rest like on twin tank semi trucks

I will have to think on it some more, I did consider that briefly but unsure of the path of the crossover hose and the risk of it getting damaged being at a low point.

 

[chucky]

I mounted a 90 gallon boat fuel tank in the dovetail of my box so i can just let it gravity feed down to the lower main tank but putting a pump inline would speed up the process

 

[MECOMAN]

Whatever this is, don’t think it’s a temp sensor…a switch maybe? I’ve still gotta look it up in the TMs. This port is plugged on every other 3126 manual I’ve seen so far.

Did you find out what the item in the picture was and did it have a cat part number?

 

[Mavcaster]

Did you find out what the item in the picture was and did it have a cat part number?

Yes it’s a thermistor which senses coolant temp to inhibit the cold start ether system above a certain temperature. Here is the link to one sold for the 3116 which I highly doubt a different part number was used for the 3126. Last I checked several months ago I couldn’t find one in stock but may try this one out.

Thermal Resistor Caterpillar 3116 Diesel Engine FMTV LMTV

Thermal Resistor Caterpillar 3116 Diesel Engine FMTV LMTV

www.easternsurplus.net

 

[Ronmar]

Yes it’s a thermistor which senses coolant temp to inhibit the cold start ether system above a certain temperature. Here is the link to one sold for the 3116 which I highly doubt a different part number was used for the 3126. Last I checked several months ago I couldn’t find one in stock but may try this one out.

Thermal Resistor Caterpillar 3116 Diesel Engine FMTV LMTV

Thermal Resistor Caterpillar 3116 Diesel Engine FMTV LMTV

www.easternsurplus.net

if that part in the pic is identified as a thermal resistor, it is probably not for the ether system.

On the 3116 the ether system uses a thermal switch(35F) in the coolant bypass pipe in front of the engine.

On the early A1 like many early EFI systems, it has 2 temp sensors(thermistors), one used by the ECU and one to drive a dash gauge. They also show the early A1 with a thermal switch, S40, which I assume is also ~35F coolant sensor. I am not sure where it is located on the engine.

The later 3126 and C7’s like more modern EFI systems used an integrated gauge panel and did away with the gauge sensor,
and ECU uses its coolant temp sensor to determine appropriate ether application…

 

[Mavcaster]

I would have to look into it a little more but pretty sure I traced the wire tag back to the ether system. It’s been a few months though so…

 

[Ronmar]

I would have to look into it a little more but pretty sure I traced the wire tag back to the ether system. It’s been a few months though so…

Then that is probably S40, a 35F thermal snap switch. Above 35f coolant temp it disables ether control…