What is this?

Topic: What is this? (Read 1183 times) previous topic - next topic

What is this?

December 18, 2018, 07:35:31 pm

I'm in the process of replacing rusty fuel and coolant lines lines (tubes) located on the right (facing forward) side of the ISM engine. In doing so, I had to remove a small tube that is a combination of solid and braided stainless steel (see photo) that is located just below the air compressor outlet cooling tube (photo). To orient the photo, the orange part is the remainder of the cut hose for the cooling tube (removed). The rear of the coach is toward the right. I put a temporary 3/8" vacuum cap over the flair fitting. The tube comes out the top and turns 90 degrees toward the front of the rig and attaches to another flair fitting.

Does anyone know what is in the center of the photo - power steering pump? The small black circle is the top of the rubber vacuum line cap that I inserted to keep dirt out.

Re: What is this?

Reply #1 – December 18, 2018, 09:11:06 pm

Just a little more info: The remains of the orange hose is a attached to the air compressor on the right. The object in question is to the left in the photo and is forward and below the air compressor.

Re: What is this?

Reply #2 – December 18, 2018, 09:31:27 pm

That would be your fuel pump.
The nut/cap that is next to where you removed that fitting (to the right in the pics.) is a cap that has a filter under it. That cap has an O ring seal also. If you are doing P/M work you should think about changing out this filter and O ring while you are right there.
There was another member that had a problem with that cap leaking several weeks ago I will hunt down that thread and link it here so you can look it over.

Pamela & Mike

Here it is, with some pics. and part numbers that will help you if needed.
Fuel pump leak 99 M11

Re: What is this?

Reply #3 – December 18, 2018, 10:56:47 pm

ANOTHER fuel filter??? Thanks Pamela & Mike (don't want to make an assumption as to which it was), that's a big help. I will look into replacing that filter, O ring, etc.
Sven

Re: What is this?

Reply #4 – December 19, 2018, 06:50:54 am

Sven,

This is one place that is most overlooked by owners. There are shops that have no idea that there is a filter in that location. These are the shops that will tell you the fuel pump is bad and you need a new pump when it is this filter is stopped up. Don't feel bad because I have never seen those filters mentioned in any FT service paperwork either.

This is one place that you want a Cummins OEM filter and not "replacement, as good as, or generic"

Mike

Re: What is this?

Reply #5 – December 19, 2018, 11:44:05 am

Thanks Mike, I will order a filter along with the flex hose/tube this morning. I think your information will help increase what we owners know about our coaches.
Sven

Re: What is this?

Reply #6 – December 19, 2018, 01:11:21 pm

Sven,

Thanks for the kind words. I like others here try to add our $.02 cents worth for the benefit of all.

Mike

Re: What is this?

Reply #7 – December 19, 2018, 08:14:03 pm

Can you add a pic of the filter and the replacement number when completed plz.. Thanks

Re: What is this?

Reply #8 – December 19, 2018, 09:00:46 pm

Clean up with E Z Off Oven Cleaner and Purple Stuff

Re: What is this?

Reply #9 – December 19, 2018, 09:53:09 pm

Krud Kutter works well also

Re: What is this?

Reply #10 – December 20, 2018, 01:28:49 pm

This is the hose and filter in question. Together, with the O ring, the cost was $81. Better than having a fuel problem on the road.

Re: What is this?

Reply #11 – December 20, 2018, 01:48:26 pm

Any numbers stamped on it by chance?

Re: What is this?

Reply #12 – December 20, 2018, 01:59:14 pm

Sure needs cleaning though

Re: What is this?

Reply #13 – December 20, 2018, 02:09:04 pm

Sven was the hose leaking?
Chris

Re: What is this?

Reply #14 – December 20, 2018, 02:16:02 pm

Quote from: Sven and Kristi – December 18, 2018, 10:56:47 pm

ANOTHER fuel filter???
Sven

Not to split rabbits, but, The filter looks to be a "strainer". Strainers do filter, but only the big really pieces, like small pianos.

Re: What is this?

Reply #15 – December 20, 2018, 06:40:19 pm

Quote from: DavidS – December 20, 2018, 01:48:26 pm

Any numbers stamped on it by chance?

Flexible hose: 3161622 ($52.92)
Screen rotor (filter/strainer): 146483 ($19.27)
O Ring: 3021123 ($3.32)

Richard Bark (RBark) hounded me into using the Cummins Quick Serve website (Cummins Inc. :: QuickServe Online) to find the correct parts for my particular serial number. When you register, it will ask for that number and use that as a reference in looking up the parts you need.

Re: What is this?

Reply #16 – December 20, 2018, 07:46:41 pm

Quote from: Chris m lang – December 20, 2018, 02:09:04 pm

Sven was the hose leaking?
Chris

One of the compressor coolant tubes had sprung a pin hole leak while we were at a rally. I took the hint and replaced all the rusty tubes, along with the associated hoses, while at home with my tools.

Re: What is this?

Reply #17 – December 21, 2018, 06:39:39 am

Just curious, is this specific to certain years or should all coaches have this filter?

Larry

Re: What is this?

Reply #18 – December 21, 2018, 06:55:08 am

Larry,

Only certain engines. Electronic M-11s/ ISM engines will have one. The mechanical 8.3 Cummins engines are different. With your coach being in the year with the engine swap over yours could go either way.

Mike

Re: What is this?

Reply #19 – December 23, 2018, 08:17:33 am

I have the M-11. Will be looking into this this spring it looks like.

Larry

Re: What is this?

Reply #20 – December 23, 2018, 09:41:53 am

Quote from: Sven and Kristi – December 20, 2018, 06:40:19 pm

Flexible hose: 3161622 ($52.92)
Screen rotor (filter/strainer): 146483 ($19.27)
O Ring: 3021123 ($3.32)

Richard Bark (RBark) hounded me into using the Cummins Quick Serve website (Cummins Inc. :: QuickServe Online) to find the correct parts for my particular serial number. When you register, it will ask for that number and use that as a reference in looking up the parts you need.

Thanks for supplying those numbers for those who need them. Cummins, like other items they sell, are pretty proud of those flex lines! Ouch!

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