Where Could Trailair Flex Air Pin Box Be Leaking
Updated 08/13/2021 | Published 08/12/2021
Products Featured in This Question
Question:
I put 80# of air in the air bag and the next morning it is flat. I took it out and put 12# of air in it and submerged it in water. I found no bobbles. Is the only fix a replacement bag? I am also wanting to raise the pin box to raise the bumper as much as possible. How much room do I need between the trailer box and the truck bed rail?
asked by: Earl
Expert Reply:
The only two things that could leak on the Trailair Flex Air Pin Box is the Replacement Air Bag part # LC432404 or the Replacement Valve part # LC156740. In order to check for leaks we recommend that you inflate the air bag to around the max psi which is 120 and then spay it down with a soapy water solution. If rapid forming bubbles occur then that indicates a leak. The assembly can also be dunked in a tank of water as you described.
We recommend 4-6" between the loft of the trailer and top of the bedside.
Product Page this Question was Asked From
Replacement Air Spring for Trailair 5th Wheel Pin Boxes - Qty 1
- Accessories and Parts
- 5th Wheel Pin Box
- Air Springs
- Trailair Pin Box
- Lippert
more information >
Continue Researching
- Q&A: Replacement Pin Box For A 2013 DRV Elite Suites 36RSSB3
- Q&A: Firestone Air Bags for 2026 Ford F-350 FX4 Dually
- Q&A: Replacing Lippert Trailair Flex Air Pin Box Air Bag and Shock Assembly Tips
- Q&A: Replacement Air Bag for Trailair Pin Box
- Q&A: Upgrading Lippert 194170 to 21k Flex Air Pin Box
- Q&A: Recommended Air Pressure on Lippert TrailAir Ride 5th Wheel King Pin
- Q&A: Replacement Air Bag for 1621 Curt Flex Air 5th Wheel Pin Box
- Article: The Best Trailer Tongue Locks for Preventing Trailer Theft
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Article: How Much Solar Power Do I Need For My RV?
- Article: The 5 Best Trailer Drop Hitches You Can Buy