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Help Identify This Engine Part

1998 U-320 Cummins M11 Celect Plus 450 HP

Two pictures included. 

First picture, need help confirming the part that is circled in red.  I think this is the air conditioner compressor.  Found a leak on one of the hoses coming from it.

Second picture is the leak - a green liquid.  The compression nut is tight, so either a crack developed or a compression ring/gasket gave way.

Thank you,
Chris

Re: Help Identify This Engine Part

Reply #1 –
Yup, dash A/C compressor.

Check with shops that work on car/truck A/C's.  There are ends that can be installed on the existing hose.  Nothing special about it being a motorhome-- in fact easier to access parts than on a car.  Be sure to take pictures in so they know how easy it is to access.  Include picture from bedroom with bed up.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Help Identify This Engine Part

Reply #2 –
Brett,

Thank you for the confirmation.

Monday the coach is going into a shop that works on fire trucks, transit busses, etc. to address some other issues.  They've done a lot of engine work for us.  They love how open and easily accessible the engine and components are on these coaches.

Chris

Re: Help Identify This Engine Part

Reply #3 –
Chris,

Not all shops have the parts/equipment to swedge new ends on existing hoses.  More A/C specialist than large vehicle specialist. 

But, check with your shop-- they may do it, if not, could recommend a shop that specializes in A/C work.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Help Identify This Engine Part

Reply #4 –
The green stuff appears to be A/C leak detector additive.  If someone was trying to find a leak, hopefully this is it.  Its presence in the system suggests there may be or have been a leak issue.  Does the dash A/C actually work?
Mike & Lilli
1991 GV U280 36' SBI, 3208 Cat, Build #3825
4320 Watts Solar
Kansas City, MO

Re: Help Identify This Engine Part

Reply #5 –
I believe there is an o-ring on that line. If the dye is coming up through the B-nut and there is not a hole in the line replace the O-ring. They are not the regular O-rings, they are green and can be bought as a kit at the auto supply stores or on-line.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Help Identify This Engine Part

Reply #6 –
Dont run your dash AC until the leak is fixed and recharged. Running the compressor for a length of time without refrigerant will burn out the compressor.
Rick and Wendy Green
1998 U270 3600 The Coach Formerly known as Princess
Build# 5336
2007 Ford Explorer

Re: Help Identify This Engine Part

Reply #7 –
Foretravels have a low pressure switch on the dash ac system that will prevent compressor operation if freon level is too low.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.
 

Re: Help Identify This Engine Part

Reply #8 –
Thank you all for the replies.  The responses are much appreciated!

Chris