Author Topic: Clean Air  (Read 3996 times)

Jon Hubbell

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Clean Air
« on: December 13, 2020, 02:08:12 AM »
Is the air from the turbo charger on my Monterey clean enough to use to blow out the water lines for winterization?
2002 Monterey

Eric Maclean

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  • Karen and I would like to wish you all happy trail
Re: Clean Air
« Reply #1 on: December 13, 2020, 02:57:48 AM »
Jon
Even if it was at idle you won't have enough boost to do the job .
Your going to need better than 20 psi and the only way to get that from the turbo is under load at highway speeds.

Typically at idle you'll get 2 to 3 pounds max and maybe 8 to 10 at WOT ( wide open throttle) in neutral no load.
And loading the engine against the brakes is a no no as it quickly over heats the transmission torque converter.
Sorry to dash your hopes.
Eric
1997 Patriot Yorktown
3126-B
2009 Chevy HHR
Roadmaster falcon tow bar
Demco Air Force one tow brake.

Bob Stone

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Re: Clean Air
« Reply #2 on: December 13, 2020, 07:46:11 AM »
Do you not have an air chuck in the rear passenger side beside the condensation blow out valves?

Bob Stone
'05 Monterey Laguna IV  Cat C-9

Bill Sprague

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Re: Clean Air
« Reply #3 on: December 14, 2020, 02:35:23 PM »
Do not use the blow out method in a Hydro/AquaHot equipped motorhome.  The risk is that, no matter what source of compressed air you use, there may not be enough volume and pressure to completely clear the fresh water coils.  If some remains it will drain and collect in the bottom of the coils.  If it then freezes, the repair price will take your breath away. 

You can use compressed air for the rest of the system, but after the blow out, you need to run RV antifreeze through the HydroHot.   And, if you have a Splendide, you can't blow that out either. 
Bill Sprague
Current Secretary, Past Region 1 VP
2019 Tiffin Wayfarer 24TW
Past 3 year owner '15 PleasureWay Pursuit
Past 12 year owner of '04 Monterey w/Cummins ISC 350

Jon Hubbell

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Re: Clean Air
« Reply #4 on: December 15, 2020, 03:19:28 AM »
First:  I do not have an aqua-hot system - it is a gas furnace.
Second:  I do have an outlet on the street side at the rear.  It is sufficient to keep my tires at 100 psi, so why would it not be sufficient to blow out the water system with a pressure regulator to not over pressurize the system?
2002 Monterey

Jon Hubbell

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Re: Clean Air
« Reply #5 on: December 15, 2020, 03:28:25 AM »
I know I have sufficient pressure - what I don't want to do is fill my water system with wet, oily water in addition to air.  Is that outlet clean air?  If not, am I potentially damaging my tires?  I have used it for 18 years on my motorhome and similar application for semi-trucks for years before that.
2002 Monterey

Dave Atherton

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Re: Clean Air
« Reply #6 on: December 15, 2020, 05:16:24 AM »
Gentleman, may Isuggest lets not get off track on operation of engine Turbo Charger. First of
all looking at a turbo charger a person will see one side of turbo with a rubber tube connected
to the engine air filter and to center of the compressor or cold side of turbo. Than you will notice a smaller rubber boot connected to piping that is connected the the charged air to air cooler and
exit piping enters the engine. What’s drives the turbo charger is the engine exhaust. As the
Turbo charger spins under load it is packing more air into the engine and more diesel fuel to the
engine injectors. The turbo charger turns twice then speed of the engine rpms. Where Dave is going
with above information ( the compressed air leaving the turbo charger around 330 deg F to 400
Deg F and goes through the engine CAC and enters the engine around 110 deg F ). The cool dense
Air entering engine intake provides increased power and better fuel milage. Very important point
That I cannot over state ( the piping off the compressor side or cold side of turbo, cannot allow
any air in any way through the CAC to intake of engine ). In closing do not think about breaking into a closed loop system meaning the turbo charger. It will not work along with detune and power loss will
occur within engine.  Dave Atherton Retired Cat Mechanic

William Jordan

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Re: Clean Air
« Reply #7 on: December 15, 2020, 11:51:25 AM »
Jon the air coupling you are talking about is not off the turbo charger.  I believe , its off the engine air compressor for brakes and suspension.  The fitting I believe your talking about should come after the air dryer so the air (provided the air dryer has been serviced ) will be dry. Simple answer, Yes you can use that air to blow out the water lines, fill tires etc.
Bill and Gretchen
2003 Marquis Ruby since '14

Bill Sprague

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Re: Clean Air
« Reply #8 on: December 15, 2020, 03:19:06 PM »
Sorry that I assumed you had a HydroHot.  I agree that it can be blown out with air coming from the air brake system fitting.  If I was worried about oil in that air I would buy one of the inexpensive compressor filters at Home Depot or similar.

The first example I found on Amazon is about $12.  There may be better. 

https://smile.amazon.com/NANPU-Compressed-Filter-Element-Barcket/dp/B082SMLYR8/ref=redir_mobile_desktop?ie=UTF8&aaxitk=Zez9-ZxV25Kum5Xzg2owTA&hsa_cr_id=9492085040301&ref_=sbx_be_s_sparkle_mcd_asin_1

Bill Sprague
Current Secretary, Past Region 1 VP
2019 Tiffin Wayfarer 24TW
Past 3 year owner '15 PleasureWay Pursuit
Past 12 year owner of '04 Monterey w/Cummins ISC 350

Jon Hubbell

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Re: Clean Air
« Reply #9 on: December 18, 2020, 04:28:18 AM »
Thank you all that replied.  It has been helpful and I learned a lot.  I feel like I can safely now winterize my motorhome.
2002 Monterey

Bill Sprague

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Re: Clean Air
« Reply #10 on: December 20, 2020, 05:39:56 AM »
Jon,

I think we might be neighbors at Panorama!  Let me know if I can help.

Bill
Bill Sprague
Current Secretary, Past Region 1 VP
2019 Tiffin Wayfarer 24TW
Past 3 year owner '15 PleasureWay Pursuit
Past 12 year owner of '04 Monterey w/Cummins ISC 350