How To Fix Trailair Flex Air 5th Wheel Pin Box Losing Pressure

Question

Question:

My trail air. Air bags loose air pressure and I have add air pressure when using. Any ideas on why this is happening? Otherwise I like the product. I did have to add 2 more bolts to each side of the unit to stop any movement. The 4 bolts showed some signs around the washers of the unit moving. 4 more bolts torqued to 150 solved the issue.

asked by: George L

1

Helpful Expert Reply:

There could be one of two places that you are loosing air from on your Trailair Flex Air 5th Wheel Pin Box. In order to determine where you will want to mix up a solution of soapy water and spray the airbag and inflation valve down while under pressure. If you see any bubbles forming then you know that is where the leak is occurring. If the leak is on the actual airbag then it will need to be replaced for which we have the Replacement Air Spring for Trailair 5th Wheel Pin Boxes part # LC432404. However, if the leak is on the inflation valve you can replace this with the Replacement Pin Box Tank Valve part # LC156740.

expert reply by: Conner L

1

Answer 1

Sounds like you are looking for a replacement air bag for a Trailair pin box which we have with the part #LC432404.

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Answer 2

I spoke to my contact at Lippert about the issue you are having with the Trailair Flex Air 5th Wheel Pin Box like part #LC369535 on your 2011 Ford F-350. They stated that the arrow on the shock is just a reference point and not something that you…

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Answer 3

The pressure in the airbag of the #UF35-946215 Trailair Pin Box can range from 20 to 120 psi depending on your situation. Once the pin box is installed, hitch the trailer to the tow vehicle on level ground. There is a sticker on the front of the…

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Answer 4

According to Lippert, here is how you will need to install your Replacement Air Spring for Trailair 5th Wheel Pin Boxes #LC432404: "The bag is fastened at the bottom first by inserting the carriage bolt in the keyhole shape opening on the lower…

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Answer 5

Hey Lenard, since we know your 2022 Heartland Cyclone 4270 has a Lippert 1621 pin box we don't currently have a Curt Helux that would fit it but for a great cushioned pin box option we have the Curt Flex Air part #LC328492 which will do a really…

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Answer 6

There isn't really a life expectancy rating for the air bag #LC432404 in your Trailair Air Ride 5th Wheel Pin Box simply because there are too many factors that go in to determining this (how often the trailer is used/not used, how much air is in…

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Answer 7

You can use the Camco Single Stage Propane Regulator - 200,000 Btu/Hr #CAM59013, which is a fairly standard replacement regulator and will work well to replace your KLI 9000 since it is designed for low pressure items as it maintains a constant…

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Answer 8

The Trailair Flex Air 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs #LC369535 will have an air bag pressure range between 20 and 120 psi. Lippert techs say that sticker is there to assist but is not always accurate due to the fact it is a sticker…

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Answer 9

I can see from your pictures that you have the Lippert Edge Awning. You can replace just the motor on that awning. The correct replacement motor is the Replacement Motor for Lippert Solera Power Awnings #LC373566. You will need to partially extend…

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Answer 10

Not knowing the model I can't confirm exactly what functions these pins serve for sure but I can say that on other 6-pin connectors like the one with the #ACDOM135B pin 1 is the Compressor Hot and pin 4 is the Low Fan. I've attached a diagram…

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Answer 11

Your best option is to drop the psi of the air bag from the Flex Air part #LC328492 down to 45 psi and let it be a little high on the marker. Being 1/8 of an inch off wouldn't be an issue but underinflating the bag could cause it to damage…

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Answer 12

In order to remove the old broken remote latch on your Andersen Ultimate Connection 5th Wheel Hitch #AM3200, you'll just need to loosen the nuts around the black handle to release some pressure. From here the round part connected at the funnel /…

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How To Fix Trailair Flex Air 5th Wheel Pin Box Losing Pressure

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