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Stealth01 · 03-15-2018, 04:30 PM

Yesterday was a fun day with the Coach... (RVs, the gift that keeps on giving!) Spent the morning replacing the Water Sensor on the fresh water tank. Sensor failed with an indicated quantity of 100%! Then turned my attention to the "finicky" Oasis Loop #2 pump. The pump required replacement for repeated failures to pump fluid! I had a spare pump so I reluctantly tore into the replacement. HINT#1:, if you're going to replace a pump go to your local NAPA (or automotive store) and purchase "Hose Clamp" Pliers and "Hose Pinch Off" Pliers... You will thank yourself! Hint #2: While at NAPA, purchase a foot or so of replacement heater hose. Then when replacing the pump, instead of fighting with a hose that has formed itself to the pump orifice, simply cut the hose off and replace it with a new segment of hose! Hint #3: When starting the system back up, CLOSELY look at the Oasis reservoir bottle siphon connection... I, embarrassingly, found ours cracked! As a matter of fact, when I applied pressure to it, it disintegrated. I have a replacement enroute (thank you Oasis). In the mean time, I made a temporary repair by adding a section of hose and immersing it into the tank fluid. This afternoon while performing a leak check on all of the replacements I found the reservoir tank almost EMPTY!! (Holy crap, it was 3/4 full!!) Apparently, my siphon connection was cracked for a while allowing the system to suck air in lieu of fluid... Hey, just another day of Happy RV ownership!

Coral · 03-15-2018, 04:38 PM

Great tips! I love the DIYer aspect of owning a coach. Half the fun is working on it, as long as it is not an on the road breakdown.

Dutch Star Don · 03-15-2018, 06:02 PM

Good tips on the pump replacement. I carry a spare pump, but will probably add the piers to my toolbox. They can be used for other things too. For me....tip #5, tie a rope around my ankles so that someone can pull me out of the bay when I'm done.

Webz · 03-15-2018, 06:18 PM

I hope when your reservoir was empty, you didn't suck in too much air. I had to change my fluid and purge the system after my dealer mixed two different types of coolant when he attempted to purge the air.
If you have trapped air you will have problems similar to a bad pump. Oasis tech support 1-800-993-4402 are willing and very good at trouble shooting.
I've had the joy of replacing two pumps, temp sensor and purging the system.
Be safe

Stealth01 · 03-15-2018, 07:52 PM

Quote:

Originally Posted by Webz

I hope when your reservoir was empty, you didn't suck in too much air. I had to change my fluid and purge the system after my dealer mixed two different types of coolant when he attempted to purge the air.
If you have trapped air you will have problems similar to a bad pump. Oasis tech support 1-800-993-4402 are willing and very good at trouble shooting.
I've had the joy of replacing two pumps, temp sensor and purging the system.
Be safe

Thankfully, I caught the system BEFORE the tank was empty!! I refilled the tank while waiting for the new siphon to arrive from Oasis.

101stveteran · 03-16-2018, 06:52 PM

Quote:

Originally Posted by Webz

I hope when your reservoir was empty, you didn't suck in too much air. I had to change my fluid and purge the system after my dealer mixed two different types of coolant when he attempted to purge the air.

If you have trapped air you will have problems similar to a bad pump. Oasis tech support 1-800-993-4402 are willing and very good at trouble shooting.

I've had the joy of replacing two pumps, temp sensor and purging the system.

Be safe

How do you know they put in the wrong fluid?

Nevermind Me · 03-17-2018, 06:41 AM

What type of coolant does the oasis require? I noticed mine is at the minimum level when cold.

Stealth01 · 03-17-2018, 07:07 AM

"What type of coolant does the oasis require? I noticed mine is at the minimum level when cold."

"How do you know they put in the wrong fluid?"

There are two different fluids used by ITR in their Oasis units, either Camco or Century. You can tell them apart by their color. DO NOT MIX fluids!! If the fluids are mixed you will have a "sludge mess" that will require the entire system to be flushed and re-serviced!

Algoma · 03-17-2018, 09:42 AM

It is Newmar that installs the fluid. There should be a label on the tank telling you that it is Century Transfer Fluid.

Stealth01 · 03-17-2018, 02:23 PM

Or we could look at the color...

LK23 · 03-17-2018, 02:51 PM

Please post a photo of the "Hose Clamp" Pliers and "Hose Pinch Off" Pliers. I have replaced my summer pump and wish I had known about those pliers. Possibly they are available at Amazon.

The toughest part of the job is removing the clamps. I mangled one end of my hose trying to get it off the barbed pump spout. Good idea about keeping replacement hose on hand.

When reinstalling the pump I replaced the pinch type hose clamps with the airplane type clamps—much easier to unscrew the airplane clamps.

Stealth01 · 03-17-2018, 04:11 PM

Quote:

Originally Posted by LK23

Please post a photo of the "Hose Clamp" Pliers and "Hose Pinch Off" Pliers. I have replaced my summer pump and wish I had known about those pliers. Possibly they are available at Amazon.

The toughest part of the job is removing the clamps. I mangled one end of my hose trying to get it off the barbed pump spout. Good idea about keeping replacement hose on hand.

When reinstalling the pump I replaced the pinch type hose clamps with the airplane type clamps—much easier to unscrew the airplane clamps.

Here you go, these photos are from NAPA. BTW, I use NAPA because of their proximity to me, they are also available from Amazon. NAPA part numbers are SER 3793 for Pinch Pliers and SER 3975 for Hose Clamp Pliers.