Recommended Shock Absorption for Keystone Montana 5th Wheel with Tandem Axles

Question:

Hello, I have a tandem axle Montana 5th wheel that needs suspension help. The rear axle is showing a lot of motion up and down, which translates into a lot of motion at the rear of the trailer. The trailer is not overloaded. Im looking at mounting air bags between the springs and frame, but there is limited space. I can mount the airbag directly to the bottom of the frame I-beam by drilling holes, and to the top of the springs.  Can you suggest a kit 2 bags with lower mounts, and air lines with fittings that would be the best fit? I would like to attach pics of the suspension, but there is no option to do that here. Thank you

0

Expert Reply:

Trailer suspension uses different components for the air systems than the frame mounted suspension you are looking at. For your tandem axle Keystone Montana, I recommend the Lippert Components Trailair by Center Point Air-Ride Suspension Upgrade - Tandem Axle # LC1565391 which will give you adjustable air pressure in the form of an equalizer for your leaf springs. If you want a trailer with air suspension, this is the way to go with adjustable air springs that can use manual valves or be connected to a compressor system like the Air Lift WirelessONE Compressor System for Air Helper Springs - Hand-Held Remote - Single Path # AL25870. This will give you an air ride comparable to the systems used on semi trailers for a smooth ride.

If you are interested in a more rubber mounted suspension enhancement, I recommend the Equa-Flex Cushioned Equalizers - Double Eye Springs - Tandem Axle - 3K to 6K # LC279687 or the E-Z Flex Heavy Duty Rubber Suspension System by Dexter Axle - 5-5/8" Equalizers # K71-652-00 that also have the wet bolt shackle straps for smoother function. These will offer more shock absorption than standard systems but are not adjustable like the air system.

For smooth movement of your components to allow best function, you may want to consider the Never Fail Tandem Axle Suspension Upgrade Hardware Kit for Double Eye Springs # LC281285. This will give you the self-lubricating and maintenance-free shackle straps, bushings, nuts and bolts.

Click to Enlarge
expert reply by:
0
Jason S

Ask The Experts a Question >>

Question:

What I need is one set of air bags for the rear axle only. I understand that there is no kit for my Montana 5th wheel, therefore I am looking for the best fit based on the measurements provided (see attached pic).

asked by: Jerry F

0

Expert Reply:

I reached out to my contact at Firestone and you will want to get the air spring # F6781. You will need to make your custom brackets for fit, but this bag is 6 inches in diameter. It is 5.5 inches tall when fully expanded and 2.8 inches tall when compressed. If you want a complete kit that you can modify the brackets for your system, then I recommend the Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle # F2025.

Click to Enlarge
expert reply by: Jason S
0
Jason S

Ask The Experts a Question >>

Question:

I notice that the kit does not contain a "tee" fitting for the air hose. If I order the kit I will need that fitting.

asked by: Jerry F

0

Expert Reply:

For that T-fitting you are referring to, I recommend the Air Lift Union T-Piece for 1/4" Air Lines # AL21838. This will work perfectly with that system.

Click to Enlarge
expert reply by: Jason S
0
Jason S

Ask The Experts a Question >>


Products Referenced in This Question








Product Page this Question was Asked From


Similar Expert Q&A Pages

See More Q&A Expert Answers >>