Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators

Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators

Item # DM5939

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Demco Brake Actuator - DM5939
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  • Brake Actuator
  • Reverse Lockout
  • Demco
Install this manual reverse lockout so that you can back up your vehicle without triggering your trailer's brakes. Lockout installs on any Demco Model DA91 hydraulic brake actuator and is easily activated by hand. No wiring required. Call 800-298-8924 to order Demco accessories and parts part number DM5939 or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators. Accessories and Parts reviews from real customers.


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Demco Accessories and Parts - DM5939

Install this manual reverse lockout so that you can back up your vehicle without triggering your trailer's brakes. Lockout installs on any Demco Model DA91 hydraulic brake actuator and is easily activated by hand. No wiring required.


Features:

  • Prevents trailer brakes from locking up when tow vehicle is in reverse
  • Designed for use with Demco model DA91 trailer brake actuators
  • Includes rust-resistant, zinc-coated steel pin and powder coated steel tab
  • Installs quickly and easily
  • Made in the USA


Manual Reverse Lockout

This manual lockout easily installs on any Demco DA91 hydraulic brake actuator so that you can back up your vehicle without your trailer's brakes locking up. To activate the lockout, just rotate the tab on the side of the actuator to the left. Once the lockout has been activated, you can back up your trailer without triggering the trailer brakes. Always remember to restore the tab to its original position when preparing to move forward.



5939 Demco Manual Lock Out Replacement Kit for DA91 Hydraulic Brake Actuator



DM5939 Installation InstructionsInstallation Details DM5939 Installation instructions




Customer Reviews

Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators - DM5939

Average Customer Rating:  3.0 out of 5 stars   (2 Customer Reviews)

Install this manual reverse lockout so that you can back up your vehicle without triggering your trailer's brakes. Lockout installs on any Demco Model DA91 hydraulic brake actuator and is easily activated by hand. No wiring required.

- DM5939
by:

Sorry to say it didn't do the job 100% as expected. It has to be held in place by hand while vehicle is backing up (dangerous) .. because it will not stay horizontal. Needs either a locking pin option or a longer tang that keeps it atop the plastic piece it is designed to rest on inside the trailers brake system. 672873



- DM5939
by:

Very easy to install. 609696


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Ask the Experts about this Demco Accessories and Parts

Do you have a question about this Accessories and Part?


  • Adding Manual Lockout to Surge Brake Actuator
  • The reason there are different actuators for disc brakes and drum brakes is the psi the brakes operate at. Disc brakes operate at a higher psi than drum brakes and either too much or too little pressure can cause damage to the brakes. There are units that can have manual reverse lockouts installed but not all.
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  • How to Use the Coiled Adapter 7-Way to 5-Flat Part # 787207 with a Reverse Lockout Solenoid
  • I assume you are referring to the reverse lockout solenoid wire and if that is the case then you would need to wire or check that the trailer side trailer connector has this wire on the far left pin which you can see in the attached photo of the Coiled Adapter 7-Way Flat Pin Blade to 5-Flat part # 787207. This pin should then match up with the reverse light circuit on your vehicle's 7-way.
    view full answer...

  • Manual Reverse Lockout for Demco D91 Trailer Brake Actuators
  • Yes! The manual reverse lockout kit you are looking for is the # DM5939 for D91 Demco Hydraulic Trailer Brake Actuators. I have linked the product and installation instructions to this page for your convenience.
    view full answer...

  • Does Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators Work With DA91 Models?
  • I can confirm for you that the Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators # DM5939 will work with the Demco Hydraulic Brake Actuator # DM8759131. This actuator is model number DA91, as you said, and the lockout kit is designed for use with DA91 actuator.
    view full answer...

  • How to Release the Breakaway on the Demco Hydraulic Brake Actuator Part # DM8509612
  • Are you referring to the breakaway or lockout on the Demco Hydraulic Brake Actuator part # DM8509612? If you are referring to the breakaway then there is a lever on the top of the coupler which has two positions, one for brakes on (red) and one for brakes off (green). If you are referring to the lockout then this unit does not come with a lockout mechanism. Therefore, in order reverse the trailer without having the brakes lock up you would need to either use free-backing brakes or a manual...
    view full answer...

  • Recommendation to Replace Atwood 83010 Brake Actuator
  • Your existing Atwood model 83010 Brake Actuator (which as you mentioned is no longer available) is an 8,000 pound rated assembly for hydraulic drum brakes that's compatible with a 2" ball. It's designed to fit 3" wide straight trailer tongues. In terms of specs the closest option we have available for replacement is the Demco Hydraulic Brake Actuator # DM8669112. This actuator features an 8,000 pound towing capacity, works with 2 inch hitch balls, fits 3" wide trailer tongues, and is...
    view full answer...

  • Compatibility Of Demco Hydraulic Brake Actuator with Lunette Ring and Reverse Lockout
  • The Demco Hydraulic Brake Actuator, Drum, Black, 8 Inch Adjustable Channel # DM8759122-30 that you referenced is designed for trailers weighing up to 8,000 pounds with 800 pound tongue weights. This brake actuator will work well for your 4,600 pound trailer. The # DM8759122-30 has a 3 inch wide channel on the front, and the Demco Lunette Ring # DM09557-97 is designed to mount in a 3 inch wide channel, so it will work well for you on the Demco # DM8759122-30 actuator. This # DM09557-97...
    view full answer...


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Info for this part was:

Written by:
Lindsey S
Edited by:
Lindsey S
Updated by:
Laura H
Updated by:
Jenny M

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