Replacement Actuator for 1997 Four Winns Boat Trailer

Question

Question:

I have a 1997 Four Winns, double axle, drum brake boat trailer. The actuator must be either rebuilt or replaced. As far as I can tell with my internet searches, the original Atwood actuator seems to be discontinued as are parts...I could be wrong. I get the feeling that replacement might be the best way to go but, I need guidance on getting the proper unit.

asked by: Brad B

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Expert Reply:

I have some great replacement brake actuator options but that is the route you'll need to go as Atwood has been out of business for quite awhile so replacement parts are almost non existent. The best replacement option we offer is the Demco Hydraulic Trailer Brake Actuator part # DM72VR which is designed for a 3" tongue.

I have attached a full list of options below as well.

expert reply by: Conner L

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Answer 1

We've checked the part number you gave us before and the replacement for it is the part #T4750820 which is for disc brakes. This one does come with a reverse lock out solenoid. If it has rust all over it I'd consider just replacing the entire…

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Answer 2

You do not necessarily need to replace the hub and drum assemblies on your 1990 Four Winns Tandem Axle Boat Trailer as long as they are still in good shape. The only way to tell will be removing them and checking the inside where the brake pads and…

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Answer 3

The only way to turn a surge brake actuator "off" is to engage a lockout on the actuator. Some actuators have manual lockouts, others have electric lockouts, and some have no way to lock out the actuator. Typically, free-backing brakes are…

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Answer 4

I can understand how this can be a bit confusing. Brake actuators, like the Demco Hydraulic Trailer Brake Actuator, #DM72VR, with no lock-out are typically more economical and are perfect for trailers equipped with free-backing brakes because the…

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Answer 5

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 6

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 7

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 8

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 9

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Answer 10

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 11

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 12

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…

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