Alde Expansion Tank
scaup
Member Posts: 82
Where is the Alde Expansion Tank located? I'm getting into the
installation and plumbing of the Alde in my 2017 T@B and can't locate
the expansion tank (Figures 2 and 7 of the manual). I would have thought
it would have been near the boiler/HW tank but I can't seem to locate
it.
Thanks
Thanks
Comments
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It depends on the T@B model - On mine (Max-S) it's under the back shelf. On others it's up front. What model T@B you investigating?
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Its the 2017 T@B Max S. I'm not sure what you mean by under the back shelf. Is it exposed or behind something?
Thanks
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Do you have the movable shelf with a 120v outlet on the left and a charging center on the right? If yes, it is under the charging outlet.John and Henrietta, Late 2016 T@B S Max in Western New York
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Do you have to remove anything to get to it or is it visible?
Sorry but I'm just not finding it. Do you suppose anything changed between 2016 and 2017. We picked up the trailer from the factory on 5/17.
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If yours looks like this, slide the triangular panel towards the front of the trailer.

John and Henrietta, Late 2016 T@B S Max in Western New York -
Thanks, that's where it was.
When I checked the fluid level it was at the Max line when cold. The manual says it should be about 1/2" above the Min line when cold. The service department where I bought the RV at says that is OK because if it does overflow, it will go thru the overflow tube to the outside.
Does that sound right?
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Correct. Any excess will drain onto the ground behind the driver side tire. Please note many of us have experienced a gurgling noise if the level goes at or below the minimum line.2016 Outback 320
2024 Ford F150 Supercrew short bed. -
Additional 320 S Location Pictures
'18 320 S, pitched axle, 3020HE; PNW basedTV: '17 Colorado V6 Z71 4x4, Tow Package, GM Brake Controller
TV: '25 Canyon AT4
Adventures: 58 Nights: 405 Towing Miles 50,180 -
Does anyone know where the expansion tank is on a 2016 T@B Q Max? The rear of my trailer is not like the above pictures. I just have a headboard shelf that runs from wall to wall. I'm assuming it is under there.
Followup would be, how do you gain access to what's under the headboard shelf?
ThanksSteve & Sherry
2016 T@b Q
Lakeville, MN -
I have a 2017 Q and my tank is like the picture of the 320 above
Its next to the headboard shelf on the drivers side and held with two screws
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There should be a square drive screw, or two, holding the shelf in place. Remove the screw(s) and look in the driver’s side rear corner for the expansion tank. Use a Sharpie to highlight the markings on the tank, and use a small mirror to be able to see the glycol level.
Replace the shelf when done, and replace the screw(s).Verna, Columbus, IN
2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck” -
@sranderle Not to be insulting, are you sure there aren’t 2 small screws in the driver’s side wall end of that headboard shelf?John, Judi, Guinness & OD in PDX
T@Bit@t 2015 S Max Outback, ‘18 V6 4Runner -
Nope, no woodworking at the end of the headboard on the wall. Just wall between the headboard and the overhead cabinets.
I'll take a look at the screws holding the headboard shelf on, and see what I find.
ThanksSteve & Sherry
2016 T@b Q
Lakeville, MN -
Yes, as Verna suggested, try removing the headboard shelf and look under and to the right.I'm not sure when they added the storage cubbies on the rear deck, but it doesn't sound like yours has them. On the cubbieless T@Bs you just pop up the rear shelf to access the reservoir.2015 T@B Max S (320)
2015 Nissan Frontier SV V6 4x4
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