Replacement Air Spring for Trailair Flex Air Pin Box and Installation

Updated 01/29/2019 | Published 01/28/2019

Products Featured in This Question

Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs

(203)

$1711.94

Replacement Air Spring for Trailair 5th Wheel Pin Boxes - Qty 1

(81)

$401.07

Question:

how do you replace the air spring

asked by: Michael J

Expert Reply:

I found the directions regarding how to replace the air spring in your Trailair Flex Air 5th Wheel Pin Box # LC328492 with the Replacement Air Spring # LC432404. According to the instructions:

"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."

I have added a link to a video review of this spring for you to take a look at.

expert reply by: Kyle S