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Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Big Al on February 26, 2023, 10:01:14 pm

Title: What’s this sensor for?
Post by: Big Al on February 26, 2023, 10:01:14 pm
On my 2000 Cummins ISM 450 I have this sensor at the rear of the engine that is leaking oil.
I have looked through my engine manual and it doesn't talk about it.
The sensor seems loose but I can figure out how to tighten it up. Is this something I should be considered about?
For the mean time I wrap a shop towel around the sensor to help it stay a little cleaner.
Thanks for your help.
Title: Re: What’s this sensor for?
Post by: oldguy on February 27, 2023, 09:44:14 am
That isn't a sensor it is wires going into the head probably for the injectors. Properly a o ring.
I see you have a Jake Brake.
Title: Re: What’s this sensor for?
Post by: Big Al on February 27, 2023, 02:31:48 pm
Quote from: oldguy –
That isn't a sensor it is wires going into the head probably for the injectors. Properly a o ring.
I see you have a Jake Brake.

Yes I do have a Jake Brake.
 I take it the o ring is in the head.  How do I get at the o ring?
Are those wires like a plug and I gently unplug them from the head and that's where the o ring is.

Thanks
Title: Re: What’s this sensor for?
Post by: oldguy on February 27, 2023, 07:32:16 pm
That's the front of the engine, the engine is in backwards. I went and looked at my engine but
I don't have those wires there. I'm assuming there is an O ring. I don't know if you can get at it
taking the tappet cover off. Someone else may have worked on it before and can give you more
advice. I have a Jake also which I installed.
Title: Re: What’s this sensor for?
Post by: wolfe10 on February 27, 2023, 07:52:02 pm
Any Cummins tech familiar with that engine could tell you in a heart beat.

Also, may be able to find the information on Cummins Quick Service with your engine serial number.
Title: Re: What’s this sensor for?
Post by: craneman on February 27, 2023, 09:56:22 pm
There is a post about that wire loom and oil leak. I can't find it but it had the o-ring part number and I bought one for when i adjust the valves to install it.
Title: Re: What’s this sensor for?
Post by: Jason on February 27, 2023, 11:08:08 pm
Unsure if this is it, but it should get you closer. At the bottom is a o ring that is frequently bought together. Check that. Enter your ESN to confirm.
CSSNA Community (https://shop.cummins.com/CSSNAStore/s/product/a2w4N000003sRjkQAE/cummins-wiring-harness-4970008)
Title: Re: What’s this sensor for?
Post by: Big Al on February 28, 2023, 09:51:54 am
Quote from: craneman –
There is a post about that wire loom and oil leak. I can't find it but it had the o-ring part number and I bought one for when i adjust the valves to install it.

I did find some post regarding wire loom oil leak. I need two o-rings or a new wiring harness.
I need to take a closer look at what shape the harness is in.
 Thanks for all your help.
Title: Re: What’s this sensor for?
Post by: Chuck & Jeannie on February 28, 2023, 10:09:55 am
Quote from: Big Al –
I did find some post regarding wire loom oil leak.
Big Al,

I found the thread linked below that seems to deal with this subject.  It may be the same one you found...

oil leak ISM 450 (https://www.foreforums.com/index.php?topic=37331)

Title: Re: What’s this sensor for?
Post by: craneman on February 28, 2023, 04:35:47 pm
Good hunting Chuck, that is where I got the seal information from David's post.
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