Webasto Bunk And Apu Questions

Hey guys been such a long time since I've been on here. I've been running hard on tight night shift loads and been dog tired. The other day I had my apu running and I tried to up the temp so it would make the truck 65 degrees. (It was 48 outside) instead of blowing the hotter air it blew the 41 degrees ice air or it just shut the fans off automatically... So I shut the fan off and put the webasto bunk heater on and I smelt a strong smell of desiel fuel. Is this normal for either?

OWI:

Operating While Intoxicated

APU:

Auxiliary Power Unit

On tractor trailers, and APU is a small diesel engine that powers a heat and air conditioning unit while charging the truck's main batteries at the same time. This allows the driver to remain comfortable in the cab and have access to electric power without running the main truck engine.

Having an APU helps save money in fuel costs and saves wear and tear on the main engine, though they tend to be expensive to install and maintain. Therefore only a very small percentage of the trucks on the road today come equipped with an APU.

Do.u Have a rigmaster or Tripak?

The APU temp.panel does not blow heat at all, just cold. You need to turn the dial for.the heater to work

I have a rrigmaster so i turn the heater dial.then push the APU temp up to like 80. This prevents the cold air from turning on while the heater pumps out the hot air.

APU:

Auxiliary Power Unit

On tractor trailers, and APU is a small diesel engine that powers a heat and air conditioning unit while charging the truck's main batteries at the same time. This allows the driver to remain comfortable in the cab and have access to electric power without running the main truck engine.

Having an APU helps save money in fuel costs and saves wear and tear on the main engine, though they tend to be expensive to install and maintain. Therefore only a very small percentage of the trucks on the road today come equipped with an APU.

Thanks rainy! Yeah I got a rigmaster apu. Is the webasto normal to make that smell?

APU:

Auxiliary Power Unit

On tractor trailers, and APU is a small diesel engine that powers a heat and air conditioning unit while charging the truck's main batteries at the same time. This allows the driver to remain comfortable in the cab and have access to electric power without running the main truck engine.

Having an APU helps save money in fuel costs and saves wear and tear on the main engine, though they tend to be expensive to install and maintain. Therefore only a very small percentage of the trucks on the road today come equipped with an APU.

Never had a smell

Look under bunk n make sure nothing is sitting on top of it melting or something

Reaper,

When was the last time you ran the heater? You should run it at least once a month for at least 20 - 30 minutes to keep it in tip top running condition. To answer your question, no, it's not supposed to smell like diesel fuel. That indicates it needs the shop to check it out. At least that has been my experience with them in the past.

Ernie

I never knew it needed to be ran at all.... The truck was sitting in the yard for about a year before I got assigned her so I doubt it has been ran since 2016

I never knew it needed to be ran at all.... The truck was sitting in the yard for about a year before I got assigned her so I doubt it has been ran since 2016

Did you do a through check out of the truck when you was assigned? One of the things you should have checked was the heater. I know I always check the heater and APU when I'm assigned to a new truck. It's also listed on the check sheet you are given when you get a truck assigned. So you are telling me you said you checked everything on the list when you didn't?

Ernie

APU:

Auxiliary Power Unit

On tractor trailers, and APU is a small diesel engine that powers a heat and air conditioning unit while charging the truck's main batteries at the same time. This allows the driver to remain comfortable in the cab and have access to electric power without running the main truck engine.

Having an APU helps save money in fuel costs and saves wear and tear on the main engine, though they tend to be expensive to install and maintain. Therefore only a very small percentage of the trucks on the road today come equipped with an APU.

I never knew it needed to be ran at all.... The truck was sitting in the yard for about a year before I got assigned her so I doubt it has been ran since 2016

Did you do a through check out of the truck when you was assigned? One of the things you should have checked was the heater. I know I always check the heater and APU when I'm assigned to a new truck. It's also listed on the check sheet you are given when you get a truck assigned. So you are telling me you said you checked everything on the list when you didn't?

Ernie

No I had turned it on and I felt the vents and felt no heat. (Had no idea what it was and how it worked.) So I noted it was not working. Truck when I checked it originally was 108 inside. Honestly it could have worked but I was feeling for the wrong spot.

APU:

Auxiliary Power Unit

On tractor trailers, and APU is a small diesel engine that powers a heat and air conditioning unit while charging the truck's main batteries at the same time. This allows the driver to remain comfortable in the cab and have access to electric power without running the main truck engine.

Having an APU helps save money in fuel costs and saves wear and tear on the main engine, though they tend to be expensive to install and maintain. Therefore only a very small percentage of the trucks on the road today come equipped with an APU.

No I had turned it on and I felt the vents and felt no heat. (Had no idea what it was and how it worked.) So I noted it was not working. Truck when I checked it originally was 108 inside. Honestly it could have worked but I was feeling for the wrong spot.

You just learned a valuable lesson, if you don't know what you are looking at/for, ask questions. It's better to look a little foolish by asking, than to look like a total idiot (hope no one takes this the wrong way, wasn't meant to demean anyone).

Even though I'm an old dude, if I'm unsure about something I will find someone that can show/answer my question. I learn something new every day. Never too old to learn.

Ernie

Definitely learned my lesson about that. At least it was harmlessly learned instead of causing a truck fire or roll over.