Skip to main content ↑ ↓
Topic: Please help me identify tube from left side of engine to compressor (Read 790 times) previous topic - next topic

Please help me identify tube from left side of engine to compressor

There is a metal tube running from the left side of the engine to the compressor.  It visually has significant external corrosion. 

What is it, (so I can source a replacement) and what could cause the corrosion?

1997 U320 with M11

Thanks!
40ft 1997 U320

Re: Please help me identify tube from left side of engine to compressor

Reply #1 –
You might consider soaking the tube with Ospho rust killer.  When that dries, scrub with 80 grit sand paper and re-apply some more Ospho.  When that dries, then a little black paint.

Sorry, I do not know the purpose of the  tube.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Please help me identify tube from left side of engine to compressor

Reply #2 –
I think that is a compressor cooling tube.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Please help me identify tube from left side of engine to compressor

Reply #3 –
Quote from: oldguy –
I think that is a compressor cooling tube.
I don't think it's exactly a cooling tube. I think supply tube would be a better name. The inlet for it should be after the turbo and provides clean positive airflow to the compressor.

Edit: Due to oldguy knowing what he was talking about disregard this post.

see ya
ken
The selected media item is not currently available.ken & dori hathaway & Big Agnes
🍺1992 U300 GrandVilla WTBI #4150 FOT FBP 2011
✨6V-92TA DDEC Parlor Coach 350HP Series 92
🏁2011 Nissan XTerra Pro-4X

Re: Please help me identify tube from left side of engine to compressor

Reply #4 –
Looks like the "corrosion" was caused by 23 years of paint wearing off and rust forming,if you have the time and willpower you can clean the engine and treat the rust spots and repaint it can look like new.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Please help me identify tube from left side of engine to compressor

Reply #5 –
Isn't the compressor cooled by engine water.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Please help me identify tube from left side of engine to compressor

Reply #6 –
Here is a link to a free download for the m11 shop manual

http://docshare01.docshare.tips/files/10331/103318811.pdf
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Please help me identify tube from left side of engine to compressor

Reply #7 –
Quote from: Caflashbob –
Here is a link to a free download for the m11 shop manual

http://docshare01.docshare.tips/files/10331/103318811.pdf
That document contains a wealth of info.  I will print it and keep it as a ready reference. 

The line I am referring to is shown on both the pictures and seems like it is the air compressor coolant supply line referred to on page 8-31 like Ken and Oldguy stated.  I will attempt to clean it up like Rudy and John suggested, but be prepared to replace if it appears it is too thin.
40ft 1997 U320

Re: Please help me identify tube from left side of engine to compressor

Reply #8 –
926 pages?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Please help me identify tube from left side of engine to compressor

Reply #10 –
Yes on pdf
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Please help me identify tube from left side of engine to compressor

Reply #11 –
If you have issues and need hard copy, just print out hose pages that are needed.
Future Foretravel Owners
2019 Jeep Cherokee Trailhawk
Retired USAF, Retired DOD Civ's
FAA A&P, Indust. Eng., Acft Depot Lvl. Maint.
Larry and Becky Rountree

Re: Please help me identify tube from left side of engine to compressor

Reply #12 –
My 2003 U295 has an input and return coolant lines that look like yours.

The run from the compressor to fittings on side of engine block.

I just replaced the inlet tube due to a hole that was caused by contact with spacer between the two lines.
$100+ a little for replacement line.

jack
Jack - Cynthia

Jan 2013
2003 U295 38'
3810 PBFS (6180)
2014 Jeep Sahara Unlimited