Replacement Brake Actuator For An Atwood 85778

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Question:

I need to replace my Attwood 85778 actuator because the shock absorber is shot, just wondering what you would recommend, I have drum brakes on my trailer. Thanks in advance.

asked by: Greg W

0

Expert Reply:

Hi Greg!

I have found the Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 7,000 lbs # DM72VR to be a good replacement for the Atwood 85778 actuators. We get asked about them every now and then and this one works very well. It also has the easiest to use coupler out there.

One thing to note though, this does not include a reverse lock out. I would also grab the Reverse Lockout Solenoid Kit for Demco DA66B and DA70 Hydraulic Brake Actuators - Non-Bypass # DM5836 so you can reverse without the brakes engaging. Unless you already have free-backing brakes installed, of course.

What kind of trailer is this installed on?

expert reply by: Lazer S

0

Lazer S.

9/12/2025

Hi Greg, Did the Demco Hydraulic Brake Actuator and Reverse Lockout Solenoid Kit work out for your trailer? I'm curious to know if it solved your issue, as it could help others with similar setups.

Answer 1

The re-build kit for your Titan disc Brake Actuator is Titan Replacement Kit #T4820000. This kit is for disc brakes and includes the master cylinder, filler cap, connector and hardware. I have provided a link that will take you to the product page…

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Answer 2

I really wish there was a cheap and easy way to lock out a Titan model 60 actuator but the only way would be with an electric lock out like the part #T4748800. This threads onto the back of your current actuator and once ran to the reverse light…

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Answer 3

We do have a solution for you, however, you will not be able to power reverse lights on a trailer with a 4-pin trailer connector. The reverse lights on a trailer must receive power from the reverse lights on the tow vehicle. To do this, you will want…

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Answer 4

Locking out a Titan Model 60 actuator like the part #T63FR that you referenced requires inserting the lock out tool into the into the slot right behind the portion of the coupler that inserts into the outer casing. I pointed out where in the attached…

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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

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 7

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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Replacement Brake Actuator For An Atwood 85778

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