Replacing the Air Bag in Trailair 5th Wheel Pin Box

Updated 02/19/2019 | Published 02/18/2019

Question:

is there a video on how to replace the shock on the flex air pin box - can you remove the two studs and use bolts

asked by: Jim

Expert Reply:

While there is not a video on how to install the Replacement Air Spring for Trailair 5th Wheel Pin Boxes # LC432404 we have gotten this question before and according to the manufacturer, Lippert, this is what the directions entail for replacing the spring:

"The bag is fastened at the bottom first by inserting the carriage bolt in the keyhole shape opening on the lower plate allowing the bolt head to slide in and be pulled forward securing the bag in place. Secure air bag with the air fill fitting in the up position with 2 locking nuts, not exceeding 20 ft/lbs torque on the top plate of the air bag. Install air fitting using Teflon tape or pipe sealing compound. Install the shock absorber using the longer bolts with locking nut. Tighten nuts to 60 ft/lbs."

You should not remove the two studs that are on top of the Replacement Air Spring # LC432404. These are integrated into the top of the spring and will need to remain to appropriately mount the spring.

expert reply by: Kyle S