How Much Air Pressure Should Be Run in a Ultra-Fab TrailAir Air Ride 5th Wheel King Pin
Published 09/30/2014
Products Featured in This Question
Question:
My 5th. wheel is only 13,000 # . I put the Lippert 1621 on can I run a little less air pressure rather than inflating it to the max. And if so are their air pressure settings that I can use with an air gauge. Ive already purchased it from you and the assembly only took about an hour. I gained more height over the sides of my pickup box which is what I was after, now Im after ride. I have a 40foot toy hauler with a GVW of 13,000# Also I have Dexter Axles with springs. What can I put on the axles to help them ride better, that wont be real expensive. Im towing with a 2014 Chevy Durimax 4.5 2500 4 door 4 wheel drive pickup. Im in the process of adding air bags to the rear of the pickup between the leafsprings and frame. The trailer is a 2005 Desert Fox Toy Hauler Tri-Axle. Thanks
asked by: Jeff P
Expert Reply:
According to Ultra Fab there are many factors that can effect air pressure such as the size of the air spring in diameter and height, the pin weight of the trailer, the mechanics of each individual hitch, altitude and air temperature. Ultra Fab has stated that usable air pressures can range from 20 to 120 psi. Therefore a specific air pressure is not recommended. Instead it is recommended to inflate the air bag to maintain a ride height.
To determine the ride height Ultra Fab has indicated on the lower body of the shock absorber, as shown on the included photo, reference points that should line up with the yellow sticker and arrows. Please note that in order to check this alignment the truck and trailer need to be hooked up, and parked on level ground. When they are hooked up, and the hitch is under load, there should be enough air in the bag to open the jaw to a point that the bottom lip of the top shroud on the shock absorber is even with the arrow on the yellow sticker.
I have included a photo showing the ride height recommended alignment location.
The only suspension enhancement we offer that would work on your trailer would be the part # TTRA5602. I attached a picture of how it would install for you to check out. There are no air bag systems available for trailer suspension available.
Product Page this Question was Asked From
Curt Air Ride 5th Wheel Pin Box - Lippert 1621 & 1621HD - 21,000 lbs
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 21000 lbs
- Air Ride Suspension
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- Lippert
more information >
Continue Researching
- Shop: MORryde Rubber Equalizers for Triple Axle Trailers - 35" Wheelbase - 8K
- Search Results: 225 shackles
- Search Results: independent trailer suspension kit
- Shop: 6-Leaf Double-Eye Spring for 7,000-lb Trailer Axles - 25-1/4" Long
- Shop: 6-Leaf Double-Eye Spring for 7,000-lb Trailer Axles - 25-1/4" Long
- Video: Roadmaster Comfort Ride Suspension Installation - 2019 Keystone Raptor 5W Toy Hauler
- Shop: Suspension Enhancement
- Q&A: How Much Longer Can a Leaf Spring Be And Work Safely on a Tandem Axle RV Trailer?
- Shop: Timbren Trailer Suspension Enhancement System Heavy-Duty Trailers 16,000 lbs
- Shop: Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 2" Lift - 5 Bolt - 3.5K
- Shop: Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Tandem 7K Trailer Axles
- Shop: Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Triple 7K Trailer Axles
- Q&A: When Moving Leaf Spring Above Axle Can U-Bolts be Reused
- Q&A: Should I Replace the U-bolts When Replacing the Leaf Springs
- Q&A: Triple Axle 5th Wheel Trailer Has Center Axle Forward and Backward Movement
- Q&A: Can I Use a 2" Hanger for a 1-3/4" Wide Leaf Spring
- Q&A: How Tight Should Shackle Bolts Be Tightened On Trailer
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Search Results: trailer tires and wheels
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Choosing the Right Vehicle Suspension Upgrades
- Search Results: trailer wiring
- Article: How to Measure for Trailer Hitch Drop
- Search Results: suspension enhancement
- Shop: Brake Controller
on 5th Wheel Pin Box
