Diesel Fume Odor

[Tractor Seabee]

I've seen that. A rear pipe must of made it a real pain to hook up implements on the hitch or 3pt. But maybe a rear exhaust also explains why some European tractors have their hitch & 3pt on the front...

Just thinking.....In every case, having a vertical exhaust pipe solves at least some of the problem without having any downsides. It's not just the smell of the down exhaust that is a problem, it also makes me cough.

This makes me wonder why the manufacturers ever went away from vertical exhausts..... Was it Styliing? Or do they just copy one another without ever thinking about why they are doing it?
rScotty

Maybe; driven by safety issues and cost of mitigating. A vertical coming up the side gets very hot and would have to be over-sized to eliminate back pressure, then a bracket further up to prevent stress on the manifold/muffler. Look at a diesel truck, they have a guard around the exhaust to prevent burns. I don't notice the fumes from my BX so never gave it a thought before. The vertical stacks come up from a exhaust header with to outlet pointed up.

Ron

 

[TimP]

I experienced a similar fume situation a dozen years ago while driving a tanker.

At the end of the shift,my clothes smelled like exhaust and I smelled it the whole shift.
The two other guys that drove the tractor noticed nothing.
After my complaining,the let me swing by the shop.
The technician was sympathetic and found a crack in the exhaust.

Turned out the lead driver left the engine brake on 3 and went off the road one slippery morning.
Presumably that's when the crack happened.
The only difference I could ever determine was I always drove with the window down a little.
The other guys left the window up.
I guess the window being up allowed the blower to pressurize the cab,keeping the fumes out.

I never minded diesel exhaust before,but since then,I really don't care for it. Too Bad.

Perhaps you can use those thoughts to aid your situation?

Good Luck!

number two,

Yes, I will consider the thoughts/info.

I absolutely plan to have the dealer investigate to see if he can determine a source of the odor since it's not "normal".

I'll wait until I send it to him for my next seasonal tune up since I would get free pick up and delivery.

In the meantime, I try to look around at the exhaust to see if I can spot anything obvious.

Thanks.

 

[oosik]

Perhaps an exhaust leak. OR is it possible that you are simply super sensitive to diesel exhaust odor. If the latter - find a way to increase the pressurization within your cab.

 

[rScotty]

The only difference I could ever determine was I always drove with the window down a little.
The other guys left the window up.
I guess the window being up allowed the blower to pressurize the cab,keeping the fumes out.

I never minded diesel exhaust before,but since then,I really don't care for it. Too Bad.

Perhaps you can use those thoughts to aid your situation?!

That's an interesting thought about the heater/AC blower pressurizing the cab. Using an automotive example, in one of my trucks you can set inside vs outside air for heater/AC.... which also has to mean that the quality of the outside air is going to depend on where it is drawn from. Hopefully not the engine compartment.....
The default position on the blower is "inside air", and while driving through some smoke from forest fires I noticed a big difference between the inside and outside air settings last year.
luck, rScotty

 

[TimP]

Perhaps an exhaust leak. OR is it possible that you are simply super sensitive to diesel exhaust odor. If the latter - find a way to increase the pressurization within your cab.

Hi oosik.

I don't think I'm overly sensitive to the diesel scent.... I've been around it on boats as well.

It's not just me, my wife and son can smell it on my clothes when I walk into the house.

Hopefully, I'll get it figured out.

Thanks.

 

[Burrawang]

Since I put the exhaust outlet above the roof I have barely smelt any fumes and haven't had any grey gunk in my nostrils after a days work on the loader or slasher.

 

[Burrawang]

The same type of flexible stainless steel pipe could be used on cab tractors running up one of the rear corner posts of the cab with a heat shield to protect the cab materials.

 

[TimP]

I know it's a late report, but when I sent the tractor to my dealer for annual service, I asked him to investigate the strong fume odor.

They said he found no exhaust leak and nothing else wrong. But could not explain why the smell was in the cab.

They told me the mechanic started it and let it run for a half hour and did smell the odor in te cab, but didn't think it was severe.

I plan to pull the roof off and check the A/C components in the roof to see if something is plugged up and holding onto the diesel odor.

I told them to change all the cabin filters, but not sure they really did, so I'll change them myself.

 

[5030]

I know it's a late report, but when I sent the tractor to my dealer for annual service, I asked him to investigate the strong fume odor.

They said he found no exhaust leak and nothing else wrong. But could not explain why the smell was in the cab.

They told me the mechanic started it and let it run for a half hour and did smell the odor in te cab, but didn't think it was severe.

I plan to pull the roof off and check the A/C components in the roof to see if something is plugged up and holding onto the diesel odor.

I told them to change all the cabin filters, but not sure they really did, so I'll change them myself.

There is only one filter and it mounts outboard of the cab on the right side. Be careful when you remove the roof and fiddle with the ac components up there or you'll damage the aluminum condenser and it will leak refrigerant. In reality, there is no way any diesel fumes from fuel or exhaust can get up there but have fun and remember, if you damage the system, better have a big wallet to get it repaired.

 

[5030]

I did a lengthy explanation of the procedure for cleaning the roof mount ac unit on a Kubota tractor on OTT. I'm not going to post it on here again. I suggest you cruise over to OTT and search the forum for it. It's pretty involved and like I said, you tweak the roof mount ac unit and it leaks you have a huge and expensive problem.

I clean mine every 2 years and a little hint. run the unit on recirc (vent door closed as much as possible). On all the roof mount units, a certain amount of non filtered dusty air gets into the unit no matter what you do and clogs the heat exchanger eventually.

Consider yourself lucky you don't have a newer under the seat unit. getting to them is even more involved and they get munged up as well.