covering exhaust or stack on equipment ?

Billings has really got trashy in the last few years. Not that it was all that great to begin with but I digress...

 

When an engine stops you are going to have at least one cylinder, on a 6 cyl usually 2 cylinders that have both intake and exhaust valves open in the same cylinder.

To get the turbo turning fast enough to damage it not that hard when there is no oil getting to it, get it turning a couple of hundred rpm for 20 hours, you've done messed it up.

It is not going to happen on every machine, but which machine it is going to happen on can you tell?

I used to work for an equipment company, that was a common issue brand new machines coming in with bad turbos because the stacks didn't get covered during shipping.

Ironically it is easier to mess up a bigger machine this way because they have more cylinders and can flow more air.

 

An engine will have at least one cylinder on valve overlap, and especially if the unit has bent stacks the air can be forced thru the system putting water into the cylinder. As far as the turbo, it would turn, it is posible it would dry out the bushing in the housing. I worked at a shop that had an exhaust vacuum system you put on the exhaust, they did not want it left on the unit as it might damage the turbo, in ten years I never saw one fail. We all know that a customer would not ever ##### about a non existing problem to try and stiff you on the bill.
When in doubt put on a condom.
Just a thought!

 

I have allways taped. Was told to do it years ago and I just do it out of habit.
Like one of the other guys stated, I leave the tape on nd let the customer untape it.. Proof it was covered.
Big dump trks, with the bed exhaust, well that is another deal. I don't carry that much tape. lol

 

Coffee can. Plus I have a few flappers to go on a few different size pipes. When I was a kid we had a John Deere A I used to step on a starter in the morning and try to catch the coffee can when it shot off.

 

Why don't they tape stacks on new trucks that are being towed to the dealers?

 

With the newer tractors you don't but when I was hauling them back in the 80s, you had to the way the exhaust was run.

 

The exhaust system is long enough that the air can't get to the turbo. Plus, no air can get through the DPF anyway, in either direction.

 

John Deere does not allow you to cover stacks on their machines now .... So who knows

 

the turbo isn't inside the engine. it's mounted as part of the exhaust. AFTER valve overlap and what not.

you have the exhaust manifold which mounts to the OUTSIDE of the engine. then the turbo. then the exhaust.

so, when your driving down the road. all that wind goes down the pipe and spins the turbo. with no oil pressure.

if you do your engine checks like your supposed too. you see the turbo. and there's no intake or exhaust valves mounted to it.