Can anyone identify this part?

[Paladin]

I found this laying inside the left front air duct, I'm not positive it belonged there but it appeared to, it was fed in from the bottom but almost looked like it was shoved in there. It apparently wires into the hvac breaker box in the left front bay. It appears to either be some sort of thermal sensor or the detonator to end the world as we know it. (Yes, I have a vivid imagination)
What does it do? Do I need it? Where does it go? Where should I stick it?
I no longer have the OTR air in my bus if this is related to that, I only have the heat.

Apologies for the picture clarity of lack thereof, I can take a better one later if needed.

-Dave

[superpickle]

An Ice cream cone you ate most of already.. ?

[Paladin]

Umm, no, cylindrical copper, about 3" long and appears to have corroded fins at the top.
Really appears to be a temp sensor of sorts.

[Sojourner]

Check your camera for "close-up" setting....then retake it. Also hold camera very steady or tri-pod it.

FWIW

Sojourn for Christ, Jerry

[Nick Badame Refrig/ACC]

Its a HENWAY

[cody]

About 3 pounds nick? lol

[Kristinsgrandpa]

Is there any attached wiring?

Ed

[Paladin]

Yes, if I recall correctly there are three wires connected at the bottom and they in turn go into the air conditioner breaker panel in the bay.

Maybe I'll try to take a clearer picture of both later on. I snapped that bad shot while taking pictures of the larger area.

[gumpy]

It's your return air temp sensor that controlled the bus heat and a/c relay. There's a hole in the first bay that goes into the air return tunnel next to the A/C junction box where it would have been. Typically, they were attached to a rod and plate and sat basically in the air stream coming from the rear of the coach.

If you don't need it, send it my way. I could use a spare.

By the way, they're kind of fragile, so treat it with respect. I think there's a thermistor or thermocouple in glass inside it.

craig

[DavidInWilmNC]

You said you still have your OTR heat... you'll want to keep that intact.  It's what controls your heater valve. 

David

[Paladin]

I sort of suspected this, I was going to tear it out but had a nagging thought.....

I guess now I gotta put in back in somewhere.

[Kristinsgrandpa]

If it had 2 wires it would be a thermocouple, with 3 wires it is an RTD.

They both do the same thing, but a thermocouple has to have themocouple wire to connect to, and an RTD  uses common copper wire.

Ed

[Paladin]

Ok, here are some better pictures.
It's obviously been added into the existing harness and poorly at that. Three wires, no solder, just a twist and tape. It has a sticker on it that says:
Prevost Car Inc
Piece: #87-0689

I wonder why it was jammed into the ac duct and by whom?
Sorry for the pictures, maybe it'll help someone else another time.

[gumpy]

Here's what the MCI version looks like. Has a shiny glass bulb inside it (that's the fragile part).

[gumpy]

And another...