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Roadmaster Tow Bar & Demco Supplemental Braking System That Works With Hydraulic Brakes


I currently have an MandG 2.0 braking system on my 2019 Jeep Cherokee being pulled behind a 2017 Jayco Seneca with air brakes. I will be downsizing to a sprinter chassis View 24D with hydraulic brakes. Can I use the Demco Stay-IN-Play DUO air to operate the MandG air cylinder currently installed? I see no reason it would not work provided the air pressure is high enough to provide the same force. Also, since the Jeep vacuum pump is currently wired to operate off a seperate pressure switch to provide the required vacuum for the boost would the vacuum from the Damco be needed? I would still just remove the pressure switch and install the check valve that comes with the Damco unit. Just wanted to get your opinion on that. The reason for asking all this is to preserve the Cherokee MandG setup just in case I go back to a larger RV with air brakes. Thanking you in advance for a reply. Also, my old BluOx tow bar 11 yr old , thinking of replacing with a Curt Rambler 70001. Your thoughts?


Expert Reply:

Since your new motorhome does not have air brakes, the current MandG 2.0 braking system will not work with your new MH or the Demco AirForce One # SM99243.

Since your new MH has hydraulic brakes, then you're going to need the Demco SBS Stay-IN-Play DUO Supplemental Braking System # SM99251.

Also, if your Jeep's existing vacuum pump is capable of providing the required vacuum for the boost, then you don't have to use Demco's vacuum pump.

This is going to be a fresh installation, that is compatible with hydraulic brakes and includes all the components and instructions needed.

As far as replacing your old BlueOx tow bar, the Curt Rambler Steel Tow Bar for Curt and Blue Ox Base Plates # C26FR is a good choice, however if it was my recommendation I would spend a bit more and get the:

-Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar for Blue Ox Base Plates # RM-677.

This tow bar has a bit more capacity than the rambler (8K), includes safety cables, a 7-way to 6-way cable, and has integrated LED lights for low-light conditions.

expert reply by:
Bryce D

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