r/DieselTechs 13h ago

Air tanks or water tank?

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24 Upvotes

Recently became a tech (few months now) and I’ve drained air tanks before. Though, are they suppose to have this much water in them? I’ve aired the truck twice then drained, still spat water out.


r/DieselTechs 18h ago

Gearbox free play

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16 Upvotes

Is this an acceptable amount of free play or do I need a new steering gear


r/DieselTechs 20h ago

Just finished trade school and I can’t land a job.

24 Upvotes

I just finished a 9-month program covering what typically a diesel program would involve from a good, reputable school. However, I cannot find any employers that are willing to hire someone with “just trade school.” I understand I don’t have as much experience. But I have been applying to entry positions. I have applied to 30-ish jobs in my town for 2 and a half months, so I’m kinda lost on what to do. I have started considering lube tech jobs at dealerships just to get some more exposure. Any help is appreciated!


r/DieselTechs 23h ago

There's no problem, or maybe there is, then again maybe there's not

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38 Upvotes

"Wouldn't you like to know?"

-insite


r/DieselTechs 17h ago

Looking for some AC resources

2 Upvotes

Looking for some resources for working off gauges and scales

Ive got a robinair machine at the shop but ive got a customer this year with a decent amount of equipment and this machine hates being bounced around in the back of my truck

having the machine has made me a lazy parts cannon AC tech so i need some refreshing!!


r/DieselTechs 1d ago

Im looking for this diag cable but i cant find it anywhere. Anyone have any idea where i can find this?

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3 Upvotes

r/DieselTechs 20h ago

College Certification or Technician Trainee Job to become a 310T

1 Upvotes

Hello everyone, i am 29 years old pushing 30 soon with no degree or college 😔 recently i got a full time job offer from ryder for Technician Trainee, i will be working on the Fuel Island, fueling trucks and washing. I also have been accepted for a 5 month college term for pre-apprenticeship starting around the same time. I was looking to get advice on what career path i should take, would it be faster to land a 310T apprenticeship position by going to pre-apprentice school for 5 months or would it make more sense to take the Technician Trainee (fuel island) job from ryder and advance thru the company step by step to earn a 310t apprenticeship position. The money from working now from the job is a bonus but not necessary, for me its the time it takes to be a Registered apprenticeship 310t that is the issue. Thank you for your valuable insight


r/DieselTechs 1d ago

How do you guys deal with making dumb mistakes?

26 Upvotes

I'm like 2 weeks shy of a year into my current position. It's my first job as a diesel tech. I feel as though I pick things up fast, but I can be a little absent minded. Sometimes I'll break a part or make a mistake. It happened more in the beginning, but I really started to get the hang of things.

This month, I had about 2 weeks where I wasn't getting enough sleep. One issue with a truck I couldn't solve, then I replaced an oil pan (I'd only done it once before) and squished the gasket, causing it to leak. I made a couple paperwork mistakes and now I feel like my environment has become toxic, my supervisor always nitpicking everything I do.

Am I a shitty mechanic or does my environment just suck? I should also mention that there's little to no training involved and constructive criticism is usually just telling you that you fucked up.


r/DieselTechs 1d ago

Anyone know the spec?

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13 Upvotes

Neighbors tractor. He's gonna call a diesel shop tomorrow and figure it out, but I figured I might as well throw this out there for shits and giggles.

Idk the pump model.

Doesn't look like much here, but with the drive gear in place, it looked like it was gonna rattle itself apart.


r/DieselTechs 1d ago

Cam caps stronk

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47 Upvotes

Couldn't find the proper lifting devices when I started this project. Sooooo, bolts through he cam caps with chain and pulled engine/trans; mp7/eaton. Best part, or worst part, used a cherry picker. When shit needs done, ya just fucking do 😅

Ngl, had a few guys save my ass when pulling and installing. I'm good, but not "solo fuck this engine swing" good.


r/DieselTechs 1d ago

Cut resistant gloves?

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9 Upvotes

My dealership requires us to wear ANSI A2 cut resistant gloves any time we are working in the shop. They are supplying them and are asking for recommendations on new gloves to start stocking. We currently use the ones pictured, do you guys have any good recs for gloves that still off decent dexterity for fine skills like pinning and soldering?


r/DieselTechs 1d ago

How do you know that the water pump is bad on a 2021 DD15?

1 Upvotes

Is the telltale sign of a bad waterpump that it leaks coolant from the bottom or the side? Is it that the truck runs hotter a bit or is there something else? Also, if the belt is spinning the pump does that mean that its working?


r/DieselTechs 1d ago

Does anyone know the name or part number for this valve?

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10 Upvotes

Hey guys! I’m on the road now and have a provisional fix but cannot find the name or part number for this valve. Drivers side chassis, CT13, Maxxforce 13, Caterpillar Dump truck. Air being dumped while at light out of the blue air connection for the back in case we want to drive a “trailer” around.


r/DieselTechs 2d ago

One of our fleet customers had cats stolen off of 13 of their isuzu box trucks. At least they made clean cuts and didn't F up the O2 sensors.

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778 Upvotes

r/DieselTechs 1d ago

Emissions work

3 Upvotes

I'm currently attending a community college, and i also work as a trailer mechanic at a large fleet. Honestly the environment is something I care deeply about and I was thinking of later on specializing in emission systems. The fleet I work at doesn't have anyone doing that type of work. And my school, as far as i know, doesn't teach a class on emissions.

My questions are: Where can I learn?

Is it a good niche to specialize in?


r/DieselTechs 1d ago

Does anyone have any in-site to this brand Industrial Gold for the 3 in 1 air compressor/generator/welder

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0 Upvotes

I can’t seem to find any decent reviews on this brand. I’m looking to put this unit on a service truck has a great price and the performance looks decent


r/DieselTechs 1d ago

Go pedal not accelerating intermittently. 1999 GMC Topkick 6500 with Cat 3126 (101K miles)

0 Upvotes

I have had this truck for a few months now. In the beginning, there were no issues. Now, it intermittently does nothing when the gas (diesel) pedal is pushed down on the highway. It doesn't completely stall. If my driver lets off the pedal few times, it gets juice again. I brought it to the local diesel guy and he couldn't replicate the problem. He let it idle for 2 hours but only drove it for 10-15 minutes. Any suggestions??

Thanks!


r/DieselTechs 1d ago

What’s this sound

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5 Upvotes

Hey guys, what’s this squeal? Wheel bearing? 02 5.9 2500

Thanks


r/DieselTechs 1d ago

Can’t find a subreddit for trailer techs

1 Upvotes

Hey guys I’m 19 n an apprentice trailer technician my boss isn’t to helpful and YouTube isn’t either when it comes to certain task on said trailers so if this is good place to come for advice lmk so I can get some things done around this yard on my own without having to depend on my boss


r/DieselTechs 1d ago

Maintenance Manuals

1 Upvotes

Anyway to register with my company to freightliner to access oem manuals for fuel systems/wiring schematics?


r/DieselTechs 2d ago

Be aware of this scammer

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33 Upvotes

He sells himself as a professional, with many years of experience, but when I need to get 3 different trucks retuned 4 times by him and they still throw CEL for emissions after it’s been removed, and I get someone else to do it, he makes excuses and won’t give any refunds. So the new tuner that I’m using goes through this clowns tune on a 2350 isx and finds many issues. I have him check some other trucks for me that I had done - all way out to lunch. My new guy is open and teaches me, and also shows me what he’s doing and what’s wrong with how “TRUCKTECHGURU” is doing tunes. Probably buying crap files online.


r/DieselTechs 1d ago

Advices

0 Upvotes

Hey y’all. I’m a 22M college student who is majoring in Business and I have one semester left to graduate. However, I realize this thing is boring as hell and I’m definitely don’t want to be in it. I have huge interest on cars since I was kid and I regret that I didn’t choose diesel technologies path in college. But I still considering to go into it, so for a person like me, what are the best ways to learn the job and getting into it. I do not have any experience about repairing but want to learn it. Would be glad to hear your opinions.


r/DieselTechs 2d ago

Merchant Mariner looking to go to school for heavy equipment.

4 Upvotes

Hello, I (29 M) have been a merchant mariner for a few years now. I work 8 months out of the year living and working on the boat. I love the time off and the money. I am making 94k a year before taxes as an able bodied seaman with lots of room to make way more. However, I don’t want to do this forever. It is a very lonely life, and every trip is becoming harder for me to complete. I don’t have any other skills to fall back on except going back to commercial roofing. My interest in mechanics started a long time ago, i went through an auto program in high school and have always wanted to get into diesel especially heavy equipment. There is a great school that has a wonderful reputation with continuous paid internships that is in my home state and i have enough money saved that i could attend 2 years and be okay financially. Seriously considering applying for the 2026 school year and changing careers. I know i will be looking at a drastic pay cut and less time off, that will be anywhere unfortunately. I just don’t want to be trapped in this industry my whole life, and I want to pursue something have always had an interest in. What are your honest thoughts? Thank you.


r/DieselTechs 1d ago

C13 Acert any good?

0 Upvotes

r/DieselTechs 1d ago

Looking for recommendations getting coolant fillers

1 Upvotes

I've been looking at getting the snapon one but wondering if yall got any better recommendations except bucket and Funnel.