Surge Brake Actuator For Disc Brakes With a 2" Ball Coupler And Manual Lockout

Question

Question:

Do they make a hydraulic actuator that fits a 2" ball and works with disc brakes that has a manual lockout on it for when you are backing the trailer up.

asked by: Franklin D

0

Expert Reply:

The Dexter DX7.5L A-60 Brake Actuator # DX56FR has a 2" ball coupler and is compatible with disc trailer brakes. While this actuator does come with an electric lockout that ties to the reverse light circuit to prevent pressure from getting to the brake calipers, you can also use it manually. The Lockout Key # DX94FR can be placed in the actuator groove to prevent it from being able to cycle when you need to lockout the actuator. This particular actuator is designed to bolt to a 3"x5" trailer frame. We also have it for a 3"x4" # DX29FR frame.

expert reply by: Bud M

0

Answer 1

The difference is the trailer tongue size the coupler was designed to fit. The part #DX29FR is designed to fit a 3 inch by 4 inch straight tongue whereas the part #DX56FR is designed to fit a 3 inch by 5 inch straight tongue. Aside from that they are…

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Answer 2

We do carry the Replacement Inner Member #DX99FR that fit the Dexter DX7.5L A-60 Brake Actuator #DX56FR and Legacy UFP brake actuators. This would allow you to replace just the inner portion of your current actuator as long as yours is one of the…

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Answer 3

That's a really good question, and there is a difference between the 7,500 lb Dexter DX7.5L A-60 actuators for disc brakes; the differences are both in what they fit, as well as their length. - 14" Long & Top-Mounted For 3" Wide…

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Answer 4

I don't have a wiring diagram, but I'd be happy to explain it for you. In order for the reverse solenoid on a Hydraulic Brake Coupler like #DM62VR to function, one of the two wires leading from it needs to be connected to the wire from the…

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Answer 5

The best replacement option we offer for an Atwood Surge Brake Actuator 85778 is the Demco Hydraulic Brake Actuator part #DM62VR. It has the same ball size, offers a bolt-on install, and has a greater capacity. The only functional difference is it…

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Answer 6

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.

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Answer 7

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 8

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 9

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 10

The Lippert 2420801 hub is an 8k hub with an 8 lug bolt pattern so for a replacement you'd just need the part #8-285-10UC3-A.

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Answer 11

The torque for the Dexter Trailer Hub and Drum Assembly - 6,000-lb and 7,000-lb Axles - 12" - 5 Spoke Utility #8-174-5UC3 is not specified by the manufacturer. For 9/16 inch studs, the typical lug nut torque will be 120-140 ft lbs based on most…

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Answer 12

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Surge Brake Actuator For Disc Brakes With a 2" Ball Coupler And Manual Lockout

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