Wanderlodge Owners Group  
BuyByeBlueBird.com
Donate

Go Back   Wanderlodge Owners Group > Mechanic's Corner > M380 (Unique Issues)

M380 (Unique Issues) If you have a unique issue with your M380 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M380 Parts here too.

Site Search:
Reply
 
Thread Tools
  #1  
Old 12-21-2019
NoGas's Avatar
NoGas NoGas is offline
Senior Member
 
Join Date: Apr 2012
Location: DFW & PHX
Posts: 2,092
Default M380 Hurricane Boiler Fluid Flush & Replace

This is a recap of the steps required to flush a M380 Hurricane (H) diesel fired boiler & replace the pink coolant. ITR has some excellent YouTube videos that describe the burner and nozzle cleaning (see link below). However, there is nothing that describes how to flush & replace the boiler coolant:

Tools and Materials

Before you start this procedure, put together the following items:
  1. 6 gallons of Camco pink boiler fluid - available online from Amazon & places like RVUPGRADES.COM. Don’t use engine coolant! If you do and then have a leak, you could contaminate your coaches potable water supply
  2. Water pump - I have a spare 12V coach water pump that works perfect and I power it using my 12V battery charger. Any pump could be used & HF sells several cheap ones.
  3. Three short lengths of old garden hose (6-8’ long), with two fittings to attach the hose ends to the pump and 4 band clamps (2 for the pump and 2 for the IN/OUT connectors on the coach)
  4. One female hose connector - add to one short hose
  5. One male hose connector - add to second short hose, the one with a water pump fitting on the other end if your pump has one
  6. A longer supply or flush-out water hose and access to a city water supply tap
  7. Two clean 5 gal buckets
  8. Rebuild kit from ITR - If it’s been a while (or never) since you’ve checked/rebuilt the burner, consider purchasing a rebuild kit & having it ready. This kit includes a new orifice and burner flame sensor. Clean the burner chamber and install the kit before the boiler fluid flush & replace
  9. One water hose pinch off plier like this: (https://www.amazon.com/dp/B000O3NACS..._jMm-Db3CN0Y8A). I carry two onboard the coach for possible engine hose problems.

The Clean & Flush

Again, first review and follow the ITR ‘rebuild’ videos here: (https://m.youtube.com/playlist?list=PL2910FF0195174D31).

When that’s done, you’re ready to flush & replace the coolant. This process uses fresh water to flush out each of the two heating radiator circuits/zones separately and then together. Then the clear flush out water in both circuits is replaced with pink boiler fluid. And finally, all air/bubbles are purged from both circuits. Note: For especially dirty/clogged lines use of a radiator/boiler flush product may be needed. To accomplish this, use the buckets with the 12v pump in a closed loop to circulate the flush fluid as directed on the can instructions. Be sure to purge the flush liquid with clean water before replacing it with pink Boiler Fluid. The steps below describe a fresh water flush only:
  1. Attach the plain end of the short hose with a female hose connector on other end, to the LEFT yellow handled hose drain connection and secure with a band clamp
  2. Attach one end of the short hose with two plain ends to the RIGHT yellow handled hose drain connection and secure with a band clamp. Put the other end into one of your 5 gal buckets to collect the flushed fluid/water
  3. Attach your long hose to a water supply and the male end to the short hose you just connected in #1 above.
  4. Open the two (both) panel mounted yellow handled valves (horizontal) and close the red handled panel mounted valve just below (vertical)
  5. Ensure the separate red handled valve that is attached inline immediately below the three panel mounted valves is open (Parallel to the line)
  6. Open your fresh water supply faucet, observe the discharge from the hose in #2 and wait for it to run clear. If the discharge bucket fills up you can dump it with the water flowing
  7. Find the water hose Tee fitting that is next to the red handled inline valve in #5 above. Use your Water Hose Pinch Off Plier to clamp the hose extending from it. This hose DOES NOT lead to the red handled valve. You want to force water through the line/circuit that has the (Open) red handled valve. Then open the Pliers and close the inline red handled valve to force water through the other line/circuit
  8. Flush both lines extending from that Tee individually and then together
  9. Close the fresh water supply faucet and disconnect that line
  10. Half fill a 5 gal bucket with fresh water
  11. Connect the short hose leading from the OUT side of the 12V pump to the LEFT yellow handled drain connection
  12. Place the short hose coming from the RIGHT yellow handled valve drain connection into the half filled bucket of fresh water and submerge the end to the bottom
  13. Place the open end of the short hose leading to the IN side of the 12V pump, into the half filled bucket of fresh water and submerge the end
  14. Run the 12V water pump until NO bubbles appear in the bucket. Stop the pump every once in a while then restart it to see if more bubbles can be coaxed from the system. Once all air/bubble has been purged from both lines/circuits, stop the 12V pump
  15. Pour 4 gal of pink Boiler Fluid into your second 5 gal bucket
  16. Place the intake end (see #13 above) of the hose leading to the 12V pump, into the bucket of boiler fluid. Use your thumb to plug the end so as to not induce air into that line when moving the line end into the boiler fluid bucket
  17. Dump all the clear water out of the discharge bucket and put the discharge line back into that bucket
  18. Open the red handled inline valve and install the Hose Pincer Pliers on the Tee’d off line
  19. Start the 12V pump so as to draw boiler fluid from the 5 gal bucket while watching the discharge line. DO NOT let the intake line draw in air! Once pink fluid comes from the discharge line, stop the 12V pump.
  20. Close the red handled inline valve and remove your Hose Pincer Pliers
  21. Add the last two gal of pink Boiler Fluid to your Intake bucket
  22. Start the 12V pump while watching the discharge line. The discharge will quickly turn clear and flow that way until pink Boiler Fluid is once again discharged. Once pink fluid comes from the discharge line stop the pump, open the red handled valve and remove the Hose Pincer Pliers
  23. Ensure sufficient Boiler fluid remains in the intake bucket. Then place the discharge line end into the intake bucket of Pink Boiler Fluid. Add fresh Boiler Fluid to the intake bucket if at least 6” of fluid doesn’t cover both hose ends.
  24. At this point follow the procedure outlined in steps #7 & #8 above to continuously recirculate the pink Boiler Fluid and purge all air/bubbles from both circuits. Let the 12V pump run for 10-15 minutes with each line/circuit OPEN individually (using the Pincer Hose Clamp and red handle valve), then with both circuits open to completely evacuate all air and bubbles from the system.
  25. Close the two yellow handled flush valves, open the two red in line valves and disconnect the IN and OUT Drain & Fill hoses. I recommend stowing all the hoses and your pump in a bin, so they will be ready the next time.

Lastly, congratulate yourself for making it through the process. But rest assured that the next time it will be MUCH easier
.
Attached Thumbnails
Click image for larger version

Name:	09F9C781-85BF-4448-BCFE-AF189971202B.jpg
Views:	31
Size:	204.0 KB
ID:	65601   Click image for larger version

Name:	FA1E1959-7923-4C50-AA8F-7F9D7A89DD97.jpg
Views:	32
Size:	184.3 KB
ID:	65602   Click image for larger version

Name:	49919084-815B-40D6-81BA-20520CD06D43.jpg
Views:	26
Size:	158.4 KB
ID:	65603   Click image for larger version

Name:	424E4B31-BF14-44FE-89E7-BB3C9A9754A8.jpg
Views:	26
Size:	96.5 KB
ID:	65604   Click image for larger version

Name:	419B82DB-AE2C-49F0-8C89-9BFE8D4622E4.jpg
Views:	27
Size:	173.5 KB
ID:	65605   Click image for larger version

Name:	8C98412B-6FE9-484A-AC07-57E9CCEB24F5.jpg
Views:	28
Size:	94.1 KB
ID:	65606   Click image for larger version

Name:	BCD04FFE-2074-4D9C-B599-B215E8214217.jpg
Views:	27
Size:	191.5 KB
ID:	65607   Click image for larger version

Name:	1D7B9F38-E27F-4CA0-8915-C62A6168FEEB.jpg
Views:	28
Size:	81.1 KB
ID:	65608  
__________________
Van & Toni in TX & AZ
2004 M380 DS & 2013 Fiat 500 Pop
Reply With Quote
  #2  
Old 12-21-2019
Dc2x4drvr's Avatar
Dc2x4drvr Dc2x4drvr is offline
Senior Member
 
Join Date: Jan 2015
Location: JAX Based
Posts: 1,434
Default

GREAT article Van, this should be a sticky!
__________________
Lance & Linda Hall
2004 M380
Body #W000234
"Smooth Ride"
Full Timing with 2 cats
Reply With Quote
  #3  
Old 12-21-2019
DonB's Avatar
DonB DonB is offline
Geek
 
Join Date: Jan 2008
Location: Eureka
Posts: 4,371
Default

Is there a reason you don't mix it 50/50 with distilled water?
__________________
Don Bradner
Current: No RV at this time
2015 Jeep Grand Cherokee
Prior: 2004 M380 Double Slide
Prior: 1990 WB40 "Blue Thunder"
My location: www.bbirdmaps.com/user2.cfm?user=1
Reply With Quote
  #4  
Old 12-21-2019
NoGas's Avatar
NoGas NoGas is offline
Senior Member
 
Join Date: Apr 2012
Location: DFW & PHX
Posts: 2,092
Default

Quote:
Originally Posted by DonB View Post
Is there a reason you don't mix it 50/50 with distilled water?
Lazy?

Seriously, you certainly could do that. But figured there’d be twice the corrosion inhibitors and I ordered a whole case of the Camco stuff online so it was way less expensive than by the bottle. Besides, distilled is .80/gal at Wally and I may want to visit Anchorage this time of year

Also, I forgot to mention that the plastic over flow tank that’s mounted on the outside should be cleaned out. Unfortunately it’s almost impossible to remove from the panel because the nuts behind the panel turn when you try to unscrew them. So I used a small shop vac to suck the fluid out, rinsed it out and cleaned the inside before partially refilling with clean pink fluid.
.
Attached Thumbnails
Click image for larger version

Name:	F0451560-90BE-4C36-9CA2-2E4BC4355C97.jpg
Views:	18
Size:	189.7 KB
ID:	65609   Click image for larger version

Name:	52E755A2-1559-407F-8CAA-81DA895C869B.jpg
Views:	15
Size:	188.4 KB
ID:	65610  
__________________
Van & Toni in TX & AZ
2004 M380 DS & 2013 Fiat 500 Pop
Reply With Quote
  #5  
Old 12-21-2019
DonB's Avatar
DonB DonB is offline
Geek
 
Join Date: Jan 2008
Location: Eureka
Posts: 4,371
Default

I am aware of the apparently conflicting statements on the label. I guess "not required" is different from "maybe you might want to."


It is generally accepted (but not without a small number of dissenters) that water is a better heat transfer medium than any antifreeze, pink, green, or whatever, so the idea is to use enough antifreeze to handle the lowest temperature you will see as well as provide adequate corrosion protection, but not to use more than that.


I don't know if ITR has a recommendation, but Aqua Hot says that you want 35-38% Propylene Glycol, and that Camco has 67% in the bottle.
__________________
Don Bradner
Current: No RV at this time
2015 Jeep Grand Cherokee
Prior: 2004 M380 Double Slide
Prior: 1990 WB40 "Blue Thunder"
My location: www.bbirdmaps.com/user2.cfm?user=1
Reply With Quote
  #6  
Old 12-21-2019
NoGas's Avatar
NoGas NoGas is offline
Senior Member
 
Join Date: Apr 2012
Location: DFW & PHX
Posts: 2,092
Default

The H manual says 50/50 water/“antifreeze” and not higher to prevent viscosity issues. The Camco stuff is premixed to a -100 degree level which equates to 67% glycol and 33% other (mostly distilled water). Round numbers for a 5 gal system, that means I need to pull just over a gallon out and replace it with distilled water? So confusing
Attached Thumbnails
Click image for larger version

Name:	8A1B07AD-B543-4226-BD1E-C200104674E8.jpg
Views:	8
Size:	203.4 KB
ID:	65611   Click image for larger version

Name:	57017E1C-4DCD-414B-A89F-43A151E45ED1.jpg
Views:	6
Size:	207.7 KB
ID:	65612  
__________________
Van & Toni in TX & AZ
2004 M380 DS & 2013 Fiat 500 Pop
Reply With Quote
  #7  
Old 12-21-2019
Thumbqdm's Avatar
Thumbqdm Thumbqdm is offline
thumbqdm@gmail.com
 
Join Date: Mar 2019
Location: Harbor Beach
Posts: 63
Default

I flushed my system in October. I also didn't dilute the Camco fluid. Now I will make a note to address my addition of 100% Camco when I do my Spring checks. FYI - my system was filled with green auto anti-freeze, a big no-no. That was compliments of one of the P.O.s. Yikes.
__________________
Paul Plantinga
Harbor Beach, Michigan
2004 M380
2006 Jeep Wrangler
Reply With Quote
  #8  
Old 12-21-2019
DonB's Avatar
DonB DonB is offline
Geek
 
Join Date: Jan 2008
Location: Eureka
Posts: 4,371
Default

It is hard to know if the H manual means you should use 50% boiler fluid or 50% Propylene Glycol. Aqua Hot is much more technical by saying 35-38% PG, which means mixing Camco close to 50/50. AH sells products that are 37% out of the bottle for undiluted use, and ones that are 97% PG, and they tell you to mix those 1 qt to 2 qts water. They don't sell Camco, but they give the data.



Note that some PG products are green, so just seeing green doesn't necessarily mean it is automotive antifreeze. See http://www.aquahot.com/faqs.aspx
__________________
Don Bradner
Current: No RV at this time
2015 Jeep Grand Cherokee
Prior: 2004 M380 Double Slide
Prior: 1990 WB40 "Blue Thunder"
My location: www.bbirdmaps.com/user2.cfm?user=1
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
M380 Hurricane Floor Heat Gump M380 (Unique Issues) 13 12-20-2018 06:02 AM
Hurricane Antifreeze Flush BBERIC35 M380 (Unique Issues) 3 02-09-2017 01:13 PM
M380 Replace Front TV Dennis 'Bird Projects & Modifications 2 05-23-2013 06:20 PM
M380 Hurricane Heater cmillsap M380 (Unique Issues) 21 02-20-2013 11:48 PM
M380 Hurricane heater problems. Randy Dupree HVAC, Air Conditioners, Aqua Hot, Primus, Webasto, Chassis Heaters, Furnaces and Water Heaters 6 08-23-2012 08:32 PM

Web Search:

All times are GMT -4. The time now is 08:03 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.