Legacy Package Disc Brakes - delay?

[TowingHome]

I read on the Montana 3120/21 Facebook page, that someone who had just received their 3120RL with the legacy package was experiencing a 3-4 second or so delay prior to the disc brakes engaging. According to the post - someone (not sure if Keystone or dealer) was telling him it was fine. I was just wondering if anyone on this forum had the legacy package and experienced similar delay? I just ordered my 3120 with the legacy package and was excited about getting factory installed disc brakes, but now, a bit concerned. Also, does anyone know if the legacy package disc brakes are compatible with the 2019 F-350 integrated brake controller? TIA!

[CarWin]

I seen something similar on a Facebook RV Page. It was stated that they had a 3-5 second delay in braking, and their Camping World dealer told them it was normal. I seen multiple posts stating thats NOT TRUE!!! They was advised to take to a better dealer/service center.

I don't have them YET, but hope to this summer.

[jetskier]

There is a small delay with mine (I installed my own after delivery). I don't know what pump they use from the factory so results may vary. I think mine is 1-2 seconds at most. It works fine with the Ford IBC. You don't really notice the delay because the braking is so smooth yet more aggressive than the electric drum setups. If you manually apply the brakes, it will stop the whole rig with just the trailer brakes.

[riflegunbuilder]

mine kick in right on time on the 3855

[PeteandJoan]

Originally Posted by riflegunbuilder

mine kick in right on time on the 3855

What truck are you towing with ?

[riflegunbuilder]

15 RAM 3500. Had to turn controller down from the Open Range settings.

[Golfmedik]

Make sure the truck settings are set to the "Electric over Hydraulic Brake" settings. If you leave it on "Electric Brakes", there will be delay.

[TowingHome]

Thank you, it wasn't clear in my owner's manual, or at least I have not read it, that you could change the setting. I thought that might be the case, but since I do not have my trailer yet (coming in May) I have not been able to see the different settings for trailer towing.

[Joe Hollars]

We have the legacy with disk brakes. They will smoke the tires! I love it. Had to turn our controller down. Like was said earlier, set your controller to electric over hydraulic.
Joe

[skypilot]

There is a very slight delay while the trailer's hydraulic master cylinder pumps up the brake pressure. About a second it seems. When it connects though, it is smooth and as was said above, it will lock up (smoke) the tires if not properly adjusted.



Different item but something to check prior to getting your trailer. One thing on the Ford (at least on the 2017s it seems) is that you must use the paddles on the Integrated Brake Controller to get the battery charge line to start working. Kept having dead (or almost dead) trailer batteries after driving several hours. Took it to the Ford Dealer in Albuquerque where the service tech showed me that there was no power on the charging wire from the truck to the trailer unless we closed those paddles. Had a test guage that showed brakes and lights all worked, just that line was not activated. So, now I use the paddles when I do my predeparture brake test. Have not had a problem since.


It was something like this that he used https://www.amazon.com/58270-7-Way-B...gateway&sr=8-4 as well as a larger 'Ford' circuit box. This one showed the problem easier than that fancy box

[Paul Mantz-Powers]

In my experience with our hydraulic brakes is that you have air in your brakelines. Finding an RV dealership that understands how hydraulic brakes is a challenge. Some dealerships won't touch them. A few claim they know how but really don't. You might consider going to a truck/trailer shop that routinely work on hydraulic brakes. That kind of delay is very dangerous and puts you at risk.

[jetskier]

Originally Posted by skypilot

Different item but something to check prior to getting your trailer. One thing on the Ford (at least on the 2017s it seems) is that you must use the paddles on the Integrated Brake Controller to get the battery charge line to start working. Kept having dead (or almost dead) trailer batteries after driving several hours. Took it to the Ford Dealer in Albuquerque where the service tech showed me that there was no power on the charging wire from the truck to the trailer unless we closed those paddles. Had a test guage that showed brakes and lights all worked, just that line was not activated. So, now I use the paddles when I do my predeparture brake test. Have not had a problem since.


It was something like this that he used https://www.amazon.com/58270-7-Way-B...gateway&sr=8-4 as well as a larger 'Ford' circuit box. This one showed the problem easier than that fancy box

I'll have to check this out on my 2013. My old trailer had a lot of solar and I never had an issue with draw down. On the 3790RD, I had the inverter on the last trip out for the refer. When I got to the camp site a couple hours later, it seemed like the batteries were near 12V when I started using the leveling system. I thought to myself the truck should have kept the charge up.

[klewis6787]

Yes I will have to check this out also. When I brought home our fifth wheel from Colorado to Washington State took 2 days and my batteries were dead when I got home and did not have the inverter on for the fridge so it was not keeping them charged. Thanks for the advice!

[phillyg]

I'm not sure what the solution should be, but 3-4 seconds delay is the difference between an accident, or no accident. Needs correcting.

[Carl n Susan]

Skypilot is absolutely correct about the 12V charge line not being activated on a 2017 and newer Ford. We went through this last month with a 2017 in Tucson. The dealer, who wasn't aware of it either, did verify it is a "feature" of the 2017's and up. I can't remember if it is just the Paddle that activates the circuit or the 1st application of the brakes. Not that it matters to the Disc brake system as that uses the brake light circuit.

If your pre-2017 Ford has a dead 12V charge line (key must be on to activate it), then most likely the fuse is blown. That is an easy fix.

[laverdur]

The disc brakes should be compatible with your TV. Have you gone through the menus on the truck and set the brakes for electric over hydraulic? That will make a difference in response time.

[wed]

I have the moryde Disc brakes put on this year by factory and I have a 2019 F350
Works great if the disc brakes are not moryde then you will need to check with the factory!

[Preston & Terri]

2020 3931FB Legacy - disc brakes, only towed 20 miles from dealer to current location
2017 Ford F350 with IBC - been towing another Montana with electric brakes since Apr 2017, no problems.
Brake controller set to Electric over Hydraulic.
While towing that ONE time it seemed that there was a delay engaging the brakes.
Planning to bleed air from brake lines but in preparation for that, plugged trailer into truck and discovered this.
1. Using controller manual control, the pump operates almost immediately.
2. Depressing the brake pedal, several second delay before pump operates.
Still searching the forum, anyone have experience with this issue?

[mazboy]

when i had the I/S installed they did say there would be a slight delay and when coming up to a light to start depressing the brakes a little earlier than in the past --non disc brakes.

[skypilot]

2017 F450, disk brakes on coach and yes, there is a slight delay while the master cylinder pumps up. Very short but there is a delay. Part of that is the circuitry in the truck itself - as told to me by Ford technician when I first got the truck.