5 ton hard to start? M939A2 series fuel system basics.

Рет қаралды 8,724

Tactical Repair

6 жыл бұрын

An overview of fuel system problems to look for on 939A2 series trucks, and how to address them.

Пікірлер: 34

@joemcmurtrey5800 5 жыл бұрын

Been fighting on ours going great video thanks.

@TheGreenNewSteal2025 5 жыл бұрын

Exactly the info I needed thanks.

@dmzflightmedic 6 жыл бұрын

Good block of instructions.

@JohnyLatelyCome 3 жыл бұрын

Would love to see more info on these M939s

@michaelterlizzi1684 Жыл бұрын

Ty!

@grantlandrice9223 Жыл бұрын

Thanks a bunch

@tacticalrepair Жыл бұрын

Glad it helps.

@eijijivjiv 10 ай бұрын

My 10 mm is rounded just used the fuel line

@tj742 6 жыл бұрын

Another great video. I might have missed it along the way. Where did you learn all of this?

@tacticalrepair 6 жыл бұрын

T j , experience is the best teacher.

@m1pistonhead 2 ай бұрын

After changing the separator filter and inline filter on mine, it now has a lack of power and stalls when putting it into gear. It also seems quiet at idle. It start immediately when cranked. I’m assuming there is air in the fuel system but how do I bleed it out?

@Frisky0563 5 жыл бұрын

77 gallon

@hotrodAndy 10 ай бұрын

Thank you for all the videos! I recently picked up a m923a2 bobbed with tractor air ride suspension, my abs light is on. Any suggestions on where to start?

@tacticalrepair 10 ай бұрын

Check the wiring at each wheel end for the pickup sensors. Sometimes the wires get damaged.

@davespark10 Жыл бұрын

Hey man, i hope ypu reply. My 5ton idled fine, but after driving for a few mjnutes it had no power and dark smoke came out, i tried shutting it off but it stayed on for a bit before shutting off after. Do you think its rhe fuel injection pump? Or clogged injectors? How would you approach this situation to fix it. Thank you! You gave me your email once but i cant find it.

@creekjonsun 5 жыл бұрын

Nice Mutt

@andycflbulb 5 жыл бұрын

Just referred someone to this...

@Carhug2012 2 жыл бұрын

I had an issue with my m939 not pressuring the air tank past 45 PSI. I connectted it to another to pressurize the tanks. But it only presserized the secondary, primary was still at 45psi. Any direction you can point me?

@tacticalrepair 2 жыл бұрын

Faulty pressure protection valve.

@Carhug2012 2 жыл бұрын

@@tacticalrepair that's incredible! I'll start investigating asap! Thanks man!

@boochie123 Жыл бұрын

i have a 1986 m931 tractor accelerator pedal sticks i have to pull it up as im driving it suggestions?

@tacticalrepair Жыл бұрын

Lubriate the pivot pin for the pedal at the floor, and lube the bellcrank outside.

@davespark10 Жыл бұрын

Looking for fuel screw on injector pump 👀

@tacticalrepair Жыл бұрын

I haven't messed with that on my 5 ton. This is a Bosch MW or P-5000 pump. Just do a general youtube search for fuel adjustment on one of those.

@MrCrankrod 3 жыл бұрын

Didn't some of them have the 855 (350) Cummins?

@tacticalrepair 3 жыл бұрын

855 yes, but only rated at 250hp in these.

@nathanielroberts480 3 ай бұрын

I'm looking wheel seals for this truck.

@tacticalrepair 3 ай бұрын

Www.bigmikesmotorpool.com

@nathanielroberts480 3 ай бұрын

Thank you.

@braininavatnow9197 3 жыл бұрын

Yeah but how do you do this without pressurizing the fuel tank?

@tacticalrepair 3 жыл бұрын

You can just open the bleeder and crank until fuel comes out. It will eventually. Or you can put a schrader valve on an extra fuel cap like I did for pressurizing tanks.

@braininavatnow9197 2 жыл бұрын

@@tacticalrepairI'm going to be getting this thing going this week.... Same engine... M932a2.. been sitting for 7 years.... Your video sure is better than the TM's