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.…
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…
Hi Joseph, the 3,500 pound rating on part #C80136 is for each individual safety cable, not the pair. That said, the ratings are not added together, so the maximum weight of the vehicle or trailer being towed still cannot exceed 3,500 pounds. The…
The Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes #HS481-8067 is designed to be completely plug-and-play so the female end of the 7-way would need to connect to the 7-way cable that's already installed on the trailer…
Hey Clay, if the bolt pattern of your boat trailer does not match what is on the Demco actuator part #DM8104311 you have the option to redrill holes on the trailer to match the actuator or you can have the actuator welded to the trailer. I'd…
Not another one! Just kidding Dirk! I was in the Marines I enjoy these conversion questions on the M1101 trailers. I'd be more than happy to list the parts you need, along with quantity, and confirm compatibility. 1 - Timbren Axle-Less Trailer…
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…
The replacement I recommend 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 difference is it has an electric…
Since Atwood went out of business none of their actuator (or other product) replacement parts are available unfortunately, so your only real option to having a working actuator is to replace the entire unit. I am attaching a link to our selection of…
Hey Howard! Yes, I think the Replacement Inner Member for Dexter DX7.5L Brake Actuator #DX97FR will replace what you have. It has the same body, just a different coupler on the end, so it will line up in the old housing. If you want to save some…
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…
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.…
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…
Hi Joseph, the 3,500 pound rating on part #C80136 is for each individual safety cable, not the pair. That said, the ratings are not added together, so the maximum weight of the vehicle or trailer being towed still cannot exceed 3,500 pounds. The…
The Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes #HS481-8067 is designed to be completely plug-and-play so the female end of the 7-way would need to connect to the 7-way cable that's already installed on the trailer…
Hey Clay, if the bolt pattern of your boat trailer does not match what is on the Demco actuator part #DM8104311 you have the option to redrill holes on the trailer to match the actuator or you can have the actuator welded to the trailer. I'd…
Not another one! Just kidding Dirk! I was in the Marines I enjoy these conversion questions on the M1101 trailers. I'd be more than happy to list the parts you need, along with quantity, and confirm compatibility. 1 - Timbren Axle-Less Trailer…
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…
The replacement I recommend 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 difference is it has an electric…
Since Atwood went out of business none of their actuator (or other product) replacement parts are available unfortunately, so your only real option to having a working actuator is to replace the entire unit. I am attaching a link to our selection of…
Hey Howard! Yes, I think the Replacement Inner Member for Dexter DX7.5L Brake Actuator #DX97FR will replace what you have. It has the same body, just a different coupler on the end, so it will line up in the old housing. If you want to save some…
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…
Connect to a 2 inch ball coupler and let a hydraulic actuator activate trailer brakes as your tow vehicle slows or stops. Match your trailer by tongue style—top-mounted for a 3" wide frame or bolt-on options for 3" x 4" or 3" x 5"—and choose a length that suits your setup. Some include an electric reverse lockout so you can back up without actuating the trailer brakes.
Yes, with a few checks. Verify bolt pattern and overall length; some swaps need a third hole or minor re-drilling, and plumbing angle changes may need line rerouting. If your old unit had a manual lockout, plan on an electric reverse lockout and wire it to your reverse circuit. Switching from a 4-pin to a 7-way simplifies the lockout connection.
A vacuum bleeder with a capable air compressor makes it quick. Or pressurize by pumping the emergency release lever or pull cable, then bleed the furthest wheel first until bubbles stop. Access to the piston can help. Check fittings for proper threads before bleeding to avoid leaks, and keep an eye on fluid level as you go.
Match the actuator to your tongue size and mount style, like 3" wide, 3" x 4", or 3" x 5", and whether it's top mounted. Check bolt-hole spacing; some line up perfectly while others may need an added hole or slight enlargement. Compare overall length since some replacements are longer. Also confirm your lock or pin style will work with the new housing.
Test-couple to a 2" hitch ball before final bolting or welding to confirm smooth latch and easy uncoupling. Verify your tongue dimensions; a non-3" square or unique tongue may not accept some housings. Inspect the master cylinder and brake line fitting threads for defects. Confirm your lockout wiring route and length reach the reverse circuit cleanly.
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