RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 05-29-2020, 03:45 PM   #1
JC2
Senior Member
 
JC2's Avatar
 
Newmar Owners Club
Texas Boomers Club
Join Date: Dec 2003
Location: Mo/Texas
Posts: 3,428
Black Cannister in Rear Engine Compartment

In the rear engine compartment of our 2010 Newmar Dutch Aire is a large black cannister that I believe contains several gal of hydraulic fluid-as stated on a label-AW 46. Several months ago, I notice a small sauce plate size oil leak on the ground under this cannister. I wiped this up as it did not appear to be leaker further. Several days ago, I took our MH to a Cummins service center for pm on the big engine(425 Cummins) and the 10kw generator. I did not think to have them check for a leak as it had not occurred again for several months. When I picked the mh up and drove back to our winter residence, about 4-5 miles, I noticed that the leak had started again but heavier. After shutting off the engine, the leak stopped and did not start again approx. 15 min later when I retarted and fast idled it for about 5-10 minutes. I checked the dip stick in the black cannister several times and it showed fluid overfilled up to the bottom cap of the dipstick. I also checked the same about 7-10 days before taking it in for service and the fluid level was way high at that time also. I have since suctioned out about a small juice glass of fluid and the level is down slightly below full.
If overfilled, would this cause the fluid to be purge somewhere and drip like this?
Thoughts anyone?????
Attached Thumbnails
Click image for larger version

Name:	IMG_20200527_155929253.jpg
Views:	5
Size:	114.2 KB
ID:	287489   Click image for larger version

Name:	IMG_20200529_155150884.jpg
Views:	5
Size:	125.5 KB
ID:	287490  

__________________

__________________
2010 Newmar Dutch Aire DP 4304-Cummins ISL 425hp-Spartan MM Chassis-2013 Chev Equinox AWD-Ready Brute Elite Towing System-FMCA 402879-SKP 120487
JC2 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 05-29-2020, 03:55 PM   #2
Senior Member
 
Old Scout's Avatar
 
Join Date: Nov 2005
Posts: 5,693
Perhaps....and depending on where you Cummins engine or Allison tranny dip-sticks are located, an overfill situation with them could cause a similar overflow out these dip sticks too.....hydraulic fluid/tranny fluid is reddish in color, engine oil is black....if hydraulic fluid came out the black canister, seems like you would see fluid running down the side of the canister--not really another place for overfilled hydraulic fluid to leak out....
__________________

__________________
Old Scout
2003 Alpine 40' MDTS
New Braunfels, Texas
Old Scout is online now   Reply With Quote
Old 05-29-2020, 04:26 PM   #3
Senior Member
 
Join Date: Aug 2013
Location: Canton, MI
Posts: 743
Quote:
Originally Posted by JC2 View Post
In the rear engine compartment of our 2010 Newmar Dutch Aire is a large black cannister that I believe contains several gal of hydraulic fluid-as stated on a label-AW 46. Several months ago, I notice a small sauce plate size oil leak on the ground under this cannister. I wiped this up as it did not appear to be leaker further. Several days ago, I took our MH to a Cummins service center for pm on the big engine(425 Cummins) and the 10kw generator. I did not think to have them check for a leak as it had not occurred again for several months. When I picked the mh up and drove back to our winter residence, about 4-5 miles, I noticed that the leak had started again but heavier. After shutting off the engine, the leak stopped and did not start again approx. 15 min later when I retarted and fast idled it for about 5-10 minutes. I checked the dip stick in the black cannister several times and it showed fluid overfilled up to the bottom cap of the dipstick. I also checked the same about 7-10 days before taking it in for service and the fluid level was way high at that time also. I have since suctioned out about a small juice glass of fluid and the level is down slightly below full.
If overfilled, would this cause the fluid to be purge somewhere and drip like this?
Thoughts anyone?????


I had a leak on my last coach. Mine was leaking from the fitting on the bottom of the tank. There is a gasket there on the inside of the tank that may need to be replaced. Unfortunately to do that you have to drain the tank.
__________________
Tigerfan1

2016 DSDP 4369, Freightliner Chassis, AF One brake system, 2016 Chevy Equinox
Tigerfan1 is offline   Reply With Quote
Old 05-29-2020, 07:29 PM   #4
Senior Member
 
Newmar Owners Club
Spartan Chassis
Join Date: Oct 2014
Location: Lake McClure, CA
Posts: 1,055
One of those hoses should go to a large hydraulic filter (probably down). Check there also for leaks. I replaced the drain plug on the bottom of the reservoir with a easy oil drain plug. Have to drain the reservoir to change the filter so this will make it alot easier.
__________________
2018 Dutch Star 4369 Spartan Chassis
2016 Jeep Cherokee, 1952 Willys CJ3A
10 fan is offline   Reply With Quote
Old 05-29-2020, 07:55 PM   #5
JC2
Senior Member
 
JC2's Avatar
 
Newmar Owners Club
Texas Boomers Club
Join Date: Dec 2003
Location: Mo/Texas
Posts: 3,428
Thanks everyone for replying. Tomorrow I intend to :

1. Do the search and suggestions given so far in the responses.

2. Start the big engine and run it at high idle for about 30 minutes and see if the leak will start again. Don't like to start the engine and do this but high idle(1100-1300 rpm) should hurt it.

3. If it doesn't leak then will drive it 5 miles or so which was the distance one way to where I had the maintenance done last Wednesday.

4. After the big shutdown from the virus and slowness of cg's to open, we are scheduled to leave down here in south Texas and head back up to just north of KC, Mo on Mon June 8 so won't feel comfortable until I find what the problem(?) is/might be and get it fixed.
__________________
2010 Newmar Dutch Aire DP 4304-Cummins ISL 425hp-Spartan MM Chassis-2013 Chev Equinox AWD-Ready Brute Elite Towing System-FMCA 402879-SKP 120487
JC2 is offline   Reply With Quote
Old 05-29-2020, 09:05 PM   #6
JC2
Senior Member
 
JC2's Avatar
 
Newmar Owners Club
Texas Boomers Club
Join Date: Dec 2003
Location: Mo/Texas
Posts: 3,428
Another question I should have asked in my original post is what uses the hydraulic fluid from the black cannister?
JC2 is offline   Reply With Quote
Old 05-29-2020, 09:34 PM   #7
Senior Member
 
Newmar Owners Club
Spartan Chassis
Join Date: Oct 2014
Location: Lake McClure, CA
Posts: 1,055
Power steering and a hydraulic fan, on mine.
__________________
2018 Dutch Star 4369 Spartan Chassis
2016 Jeep Cherokee, 1952 Willys CJ3A
10 fan is offline   Reply With Quote
Old 05-29-2020, 09:38 PM   #8
Senior Member
 
Newmar Owners Club
Spartan Chassis
Join Date: Oct 2014
Location: Lake McClure, CA
Posts: 1,055
I should of added that my reservoir canister has a power steering filter in side on the bottom along with the external hydraulic filter.
__________________
2018 Dutch Star 4369 Spartan Chassis
2016 Jeep Cherokee, 1952 Willys CJ3A
10 fan is offline   Reply With Quote
Old 05-30-2020, 01:29 PM   #9
Senior Member
 
Capt. Bill's Avatar
 
Join Date: Jun 2009
Location: Highland,IL.
Posts: 514
JC2- on my previous coach- 2005 MADP on a Spartan chassis, I had the same arrangement you have. This reservoir holds the hydraulic fluid for the power steering & radiator fan drive. You have to drain the canister & replace the Nelson internal oil filter periodically per the service interval. This involves taking off the lid retaining ring & gasket- I always put on a new gasket to ensure it didn't leak.
Be sure to tighten the drain plug & entrance & exit lines when you perform this service.

Happy Trails
__________________
Capt. Bill
2014 Newmar Mountain Aire Diesel 4364
2009 Ram 1500 Crew cab toad
Capt. Bill is offline   Reply With Quote
Old 05-31-2020, 05:52 PM   #10
JC2
Senior Member
 
JC2's Avatar
 
Newmar Owners Club
Texas Boomers Club
Join Date: Dec 2003
Location: Mo/Texas
Posts: 3,428
Success, I hope.

Yesterday, using the suggestions provided by those on this forum along with process of elimination steps, and a second set of eyes from some folks and our winter park,I believe the elusive leak has been solved.
YESTERDAY(Sat):
1. All fittings, filters connected to the hydraulic oil cannister in the engine compartment were checked and found to be tight.
2. The big o cummins motor was started and run for about 40 minutes @ 1300rpm and reached about 170-75 degrees.
3. No joy as I noticed about 8-10 "reddish" colored oily feeling on the ground in the same general area as before. Crap!!!!!
4. I had siphoned almost 14oz out of the obvious overfill from the hydraulic fluid cannister before starting the engine so was certain it wasn't that. The fluid also appeared "brownish" in color anyway.
5. ATF trans fluid? Hope not and it wasn't.
(Before starting step #6, we waited an hour or so for the engine to cool)
6. When we dug behind a jumble of wires around the bottom of the hydraulic fluid cannister, a black rubber tube was in the jumble and was an overflow tube coming from the antifreeze tank. It was moist on the bottom opening and just above where a lot of "reddish" liquid has dropped.
7. I then carefully loosened the radiator cap and after the gurgling stopped, I looked in the fill tube and the "reddish" colored antifreeze with the same feel as the drips on the ground, was no more than 1 inch from the top of the fill tube. Maybe a little overfilled. Let it cool over night.
8. Checked this am and the level has dropped maybe an inch. After siphoning off about 3/4 gal, the level seems to be where it should be.
9. Thanks everyone for ur help. It makes owning an rv more tolerable when Murphy's Law pops up.
__________________

__________________
2010 Newmar Dutch Aire DP 4304-Cummins ISL 425hp-Spartan MM Chassis-2013 Chev Equinox AWD-Ready Brute Elite Towing System-FMCA 402879-SKP 120487
JC2 is offline   Reply With Quote
Reply

Tags
engine



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Cleaner cannister Calico Cool Vintage RV's 11 04-13-2019 07:25 PM
Black foam insulation in engine compartment flyboy013 Newmar Owner's Forum 2 04-10-2019 05:30 PM
Lock on rear diesel engine compartment access door wagonmaster2 Newmar Owner's Forum 22 05-07-2015 03:01 PM
H2O small black pressure cannister? workinrvers Winnebago Industries Owner's Forum 3 11-14-2014 10:48 PM
Replacement cable for rear access door /engine compartment captncrunch Alpine Coach Owner's Forum 11 03-11-2014 04:56 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 12:33 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×