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luvdoggiez's avatar
luvdoggiez
Explorer
Jul 02, 2013

Replacing Surge tank

Hi there,

Has anyone ever changed out one of these with the metal replacement?






It's $750 for the replacement. I'm fairly mechanically inclined, but being that we live full time in the rig, we don't have a lot of fabricating tools like grinders or welders.

Thanks! - Eric -
  • Hey everyone,

    Here is a video I put together on the replacement of our surge tank on our Allegro Bus that is on a Freightliner chassis.

    Check out our video!

    So, hopefully, it will help someone in the future!

    Happy Camping! Eric and Carol Anderson
  • ludoggiez....If you have the original coolant, it requires that you test it twice a year with test strips to make sure your SCA's/DCA's are correct. If your going to change the coolant, it's a good opportunity to go with the coolant that is now being used. It's called Organic Acid Technology (OAT) coolant and never needs to be tested and will actually run a few degrees cooler.

    If you decide to change to this coolant, you need to turn on your dash heater and drain the coolant. Fill with fresh water, let it get warm and drain again. To really do it right, partially fill it again (6-7 gallons) with distilled water, run the engine for a few minutes and drain. It is not recommended to fill a diesel engine with tap water.

    There are several companies making OAT coolant. The EAS Compleat noted above, Final Charge and some others. I don't know your capacity, but buy a couple of gallons of concentrated coolant and the rest 50/50 mix. The reason for this is that you'll never drain all of the water out. Put two gallons of concentrate in first and then fill until full with 50/50 mix. This will insure that you have pretty close to a 50/50 mix when done.
  • luvdoggiez wrote:
    Hey folks, got the new one ordered from Freightliner. I'll pick it up tomorrow to install it. On a Freightliner chassis with a side mounted Radiator and the Cummings 350 engine. What sort of Radiator fluid should I use. Also, I'm thinking I may tackle a radiator flush at the same time as well. Does anyone know how much radiator fluid I should buy for the 50/50 fill?

    All your input is greatly appreciated. Thanks! - Eric-


    Do the flush and refill while you are at it. For Cummins, the EAS Compleat is their recommended long life coolant.
  • Hey folks, got the new one ordered from Freightliner. I'll pick it up tomorrow to install it. On a Freightliner chassis with a side mounted Radiator and the Cummings 350 engine. What sort of Radiator fluid should I use. Also, I'm thinking I may tackle a radiator flush at the same time as well. Does anyone know how much radiator fluid I should buy for the 50/50 fill?

    All your input is greatly appreciated. Thanks! - Eric-
  • I just had one done, All you need is the tank only, do not get the kit for $800.00 the tank cost around $200.00. All you need to do is take off the bracket that the old tank is mounted to turn it around and the new tank mounts to it. Send me a PM with email I send you pictures.