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Old 07-22-2012, 09:10 PM   #1
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Brake Guard system question

Hi all,

Im new to the forum and just recently purchased my first rv, Its a 1993 thor pinnacle 30'. The brakes on my mh are "spongy" Ive driven plenty of other coaches to know that they do not stop like cars but my brake pedal just seems to soft. after looking around the MH i noticed there is an aftermarket product called Brake Guard Safety System installed. I did a quick google search of the system and noticed that the federal trade comission is not real happy with the company and that makes me nervous to have the system on there at all. Has anybody heard of this system or used it? Whats your thoughts?

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Old 07-23-2012, 11:18 AM   #2
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There is a reason they are 'spongy' and I would find the reason why and correct it rather than look into some aftermarket product. The brakes from the factory are designed for a Motorhome/Weight. Might take some snooping but find a good mechanic to help you.

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Old 07-23-2012, 11:41 AM   #3
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Welcome to irv2.
When is the last time the brake fluid was changed?
Is there any leaks around calipers?
Brake fluid change
Maybe you should remove Brake Guard system and see if brakes improve.
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Old 07-23-2012, 04:04 PM   #4
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The Brake Guard system won't cause your brakes to be spongy. They use a piston but the volume of brake used fluid is minimal. I believe they were saying that their system worked as good as ABS and that caused them to get "slapped".
Their system was "designed" to allow a minimal fluctuation of the brake pads on a warped rotor - stopping the pads from "bouncing" and actually giving better braking.
They were on my coach for 5 years and I actually found the Workhorse braking "system" slightly better after they were installed.

I would flush your system and check the hoses.
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Old 07-23-2012, 04:22 PM   #5
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I agree with the post to check your hoses and the system fluid. Air is compressible, hyd fluid is not. Spongy pedal results from air in the brake lines.
Check, bleed, and replace the hyd brake fluid. This should solve the problem.
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Old 07-23-2012, 05:22 PM   #6
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Hi dharley, welcome to the forum. I agree with what TdogKing posted.
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Old 07-24-2012, 11:27 AM   #7
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One thing you must remember is that, being a '93, it's most likely a Chevy chassis. The Chevy chassis is a HydroBoost system, not vacuum operated as all other gas chassis, and even in perfect shape they will feel "spongy" until you get used to them. My coach has this system and has a spongy feel. Do have the system checked and serviced, but my bet is that its just a difference in the brake systems. We have to do alot of educating for people test driving our units if it happens to be a HydroBoost system. Keep us posted ?
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Old 08-05-2012, 05:02 PM   #8
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After looking further into the brake system the hydro boost seems to be the answer to my brake pedal feel. The brake system seems to be in good shape with good rotors and plenty of pad left. Thanks for all the help.

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