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M & G Brake System
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I am not familiar with the M&G but I suspect you take air from an unused port on the service brake relay valve (as opposed to the signal port from the brake treadle). Your instructions should be specific, but if in doubt get it clarified by M&G. You will have two different relay valves so do not confuse them. The relay valve you need is for the service brakes and not the parking brakes.
You can access the relay valves by getting under the coach and sitting up in the area where the axles are. The relay valve you will need is on the underside of the coach floor. Raise the coach up as high as it will go using the level low system and then support the chassis under the chassis support points. If you need to know where those points are for your coach go to the maintenance manual. If you do not have one the one for your coach is available on the Prevost Car web site and it shows where to support the chassis.
DO NOT GET UNDER YOUR COACH UNLESS IT IS SUPPORTED……… EVER.
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Jon, you’ve got me educated about the importance of supporting the bus – hell, I’m so scared I don’t want to go under it even if it IS supported!
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Don’t be afraid, but be careful. There are many very good ways to be sure you will be completely safe, however a Prevost owner was killed some years back because he needed to do a little bit of work under the coach and it came down on him. He had a full set of chassis supports in the bay of his coach.
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Interesting post Walt, I just bought a 2016 Wranger and after looking under the hood I didn’t think an M & G was doable.
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Tom my Wrandler is a 2012 but the M&G went on and has worked great.
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Tom
I have a 2016 Wrangler 2 dr and installed the M & G brake system so it will fit….Tight but works…. -
You have to move the ABS pump forward. I had to cut off the tower that holds the bolt in the side of the ABS pump unit – then it moves forward. I drilled a new hole so that one of the support posts on the bottom would go into that one, and the other support post doesn’t do anything. Then I also zipped it down. but actually, I don’t think it would move much… once you get it in there, the metal brake lines are probably gonna keep it there.
I’d say it isn’t super pretty…but I’ve also seen a lot worse. My neighbor came over and he thought it was great. So…. you know…. ymmv. He plans to get a wrangler to tow also. I also installed the backup camera and TV’s for the kids.
Anyway – you CAN fit it in there. I tested it out with an air tank and it’s working great. I bought some LED clearance lights for the “brake activation” light cuz the one they supplied is pretty small. I didn’t think you’d see it in the rearview monitor.
I supported the bus after checking the manual with 2 jacks screwed all the way up and wiggled under there, I found the distro block for the tag brakes with 2 extra plugs in it like Jon said there’d be in some other posts. And after searching my leftovers box I found a brass adapter to get it all togethter too. I’d say I did good… I only had to crawl out and back under 5 times!
I’d say the block isn’t directly above the tag axel – it’s above…. but between the 2 axels. I also saw this block in the Prevost air diagrams. I’m hoping to do some madien towing tomorrow. Everything is now installed! It’s sorta exciting when you haven’thad a towed before!
Thanks all for the input!
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Walt, it is your dues money that makes all this possible.
You may not realize it, but now you have offered good advice with your posts on this thread and it is this wealth of information our member possess and share that makes PC beneficial to us all.
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Thanks guys… I had an 07 Wrangler and had no problem installing the M & G.. 9 model years later they seem to have stuffed more crap in that space.
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I have the “break-away” system installed with my Air Force One system. Good piece of mind, and I can see the red LED lights in my backup camera when towing. I’ve tested it and it works like a charm.
M&G won’t work in a ’14 Jeep GC, but I’ve had no issues whatsoever with my AFO system.
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Which ever braking system you choose to install in your towed, it should include an intergrated “Breakaway System” which is required by many states. Don’t leave yourself exposed to the possibility of a ticket and your insurance company denying a claim simply because you didn’t have one installed on your toad.
Although it’s a bit pricy, I like my RVi2 portable braking system because it works well and is easy on and easy off and requires no alteration to my towed vehicle’s braking system.
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