Recommended Replacement Spring for a Conventional Ramp Door Spring for an Enclosed Trailer

Question

Question:

Will the M339FR work with this?

asked by: Jared P

0

Expert Reply:

Jared, the Replacement Cables for Conventional Ramp Door Spring # M339FR is not going to work with the Conventional Ramp Door Spring for 8' Wide Enclosed Trailer # 362SA8207 but it does work with the Conventional Ramp Door Spring for 8' Wide Enclosed Trailer # ERS160D96 which is the same thing but has a higher weight capacity.

expert reply by: Bryce D

0

Jerred H.

12/22/2025

Hey Jared, did you end up using the replacement cables with the higher-capacity ramp door spring? Knowing how that setup worked could help others trying to match their spring and cable options.

Answer 1

The 120-LB #M354FR is going to likely be a better option with the door weight between 125-130lbs. While the 150-LB #362SA8207 will work the higher weight will make the door want to raise up off the ground which can be troublesome when trying to load…

view full answer...

Answer 2

The spring with the black cable drum should always be mounted to your LEFT, standing on the inside of the trailer looking out. This is very important for proper operation. Dual spring systems, like #ERS160D96, have a red-coned and a black-coned…

view full answer...

Answer 3

You won't need to obtain the weight of the entire door, just the un-hinged side. You'll want to find the amount of weight you'll need to overcome to easily lift the door. You could use an old bathroom scale, place some blocking on it, and…

view full answer...

Answer 4

Hello Tim, I am happy to get you into the right spring, but we need to know the weight of the door. You mentioned that the one you are replacing is "orange coded" but the issue is that there is not a real standard and companies use…

view full answer...

Answer 5

Jared, the 150" long cables that come with the Conventional Ramp Door Spring for 8' Wide Enclosed Trailer #M354FR are unfortunately the only size offered with that part. What you could do instead, is buy the Replacement Cables for…

view full answer...

Answer 6

To test the weight of your ramp door, you will want to get the door all the way down to the ground and then on a scale of some kind (a bathroom scale can be used for this if it's the only thing available). This will be when the door is at its…

view full answer...

Answer 7

A ramp door spring rated for 4k in/lbs of torque is going to offer more assistance than a ramp door spring rated for 2k in/lbs of torque. However, choosing the highest rated door spring available is not in your best interest. If the spring was rated…

view full answer...

Answer 8

Hey Rick, thanks for reaching out! I'm guessing the 90" dimension is the width of your trailer door so for your application I recommend the Conventional Ramp Door Spring #M394FR because it has a 185 lb weight rating. This means that…

view full answer...

Answer 9

The part #CB250D96SHD has a total weight of about 45 lbs. It has a lifting capacity (spring capacity) of 250 lbs. That means it can provide up to 250lbs of lifting assistance depending how you wind it. The installation instructions for this product…

view full answer...

Answer 10

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 11

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

view full answer...

Answer 12

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

view full answer...

Recommended Replacement Spring for a Conventional Ramp Door Spring for an Enclosed Trailer

Products Featured in This Question

Product Page this Question was Asked From

Continue Researching