Correct Replacement for Demco DA66B Hydraulic Trailer Brake Actuator

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Question:

I’m and oooking at the item Demco Brake Actuator - DM8608601 for my trailer. My trailer already has a demco hydraulic tounge. Is there a way to know if this is a direct bolt on replacement for my trailer. It’s a basic steel deck double axle car trailer. The current demco tounge on the trailer says 6000lbs da66b is all I can make out on it.

asked by: Kody G

1

Helpful Expert Reply:

The Demco Hydraulic Trailer Brake Actuator part # DM72VR will be a direct replacement for a DA66B. It will mount using the same holes so install will be a breeze. The bottom hole can be left untouched.

expert reply by: Conner L

1

Answer 1

Hello again Steve; sorry for the trouble, sometimes our system doesn't play nice with pictures. I'm not seeing any calipers or rotors in the parts diagram there, only standard idler hubs. I can tell you that the bearings are #L68149 and…

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Answer 2

Hey Paul, can you get me the axle capacity of each of your axles? It would seem most likely you had 3,500 lb axles but based on your bolt pattern that doesn't quite add up so it's best to verify that first so we can make sure we get correct…

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Answer 3

I do have a potential solution for you, but we do not offer a surge brake actuator designed to fit over a 4" channel. Your best bet would be to use a weld on actuator like the Demco #DM8759922, which can be welded to the top of the tongue.…

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Answer 4

Thanks for the picture Richard, I can tell by your picture you have a Model 6 surge actuator on your trailer which the #T4846500183 is the correct replacement for if you were wanting a channel style inner slide member replacement.

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Answer 5

The Demco Hydraulic Trailer Brake Actuator part #DM72VR should be a direct replacement for the Atwood 61101 Brake Actuator that you have now. This newest updated it rated at 7K instead of 6K. This is a bolt on option that mounts on 3" centers.…

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Answer 6

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 7

Hey George! I do have brakes made specifically for your Demco KK260 Kar Kaddy! Demco Hydraulic Drum Brake - Single Servo - Galvanized - 10" - LH - Self-Adjusting - 3,500 lbs #DMSB24429M and Demco Hydraulic Drum Brake - Single Servo - Galvanized…

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Answer 8

Unfortunately the Atwood 85736 cannot be replaced so you'd actually need an entirely new actuator. The closest replacement we have is the Demco Hydraulic Brake Actuator #DM72VR. This actuator has a gross towing weight capacity of 7,000-lbs, a…

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Answer 9

For as trashed as those brake assemblies are I am impressed with how spotless that spindle is! Based on the bearing numbers you mentioned you have a #84 spindle and the hub part #AKHD-545-35-G-K is correct. Since this its galvanized it's a really…

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Answer 10

You sure can Mike. The etrailer Hydraulic Trailer Brakes item #AKUBRK-35 are going to work with your boat trailer's hubs. The only time you run into problems is going from hydraulic brakes to electric because you need a smooth surface for the…

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Answer 11

Demco does not offer a manual lockout for the coupler part #DM72VR but they do offer an electric option with the part #DM5836. They also recommend installing free-backing brake assemblies on the axles instead too which I attached a link to a page…

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Correct Replacement for Demco DA66B Hydraulic Trailer Brake Actuator

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