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Open Roads Forum  >  Class A Motorhomes

 > Brake issue

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racer99

channahon

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Posted: 02/27/12 08:11am Link  |  Print  |  Notify Moderator

1991 Bounder/454/p30/31'
I had a squeek in my brakes when applied so I replaced all four calipers-the rubber hoses-rear disc's and pumped 3 quarts of fresh fluid into system-Brakes haven't got any better but squeek is gone-If I hold pressure on brake pedal it stays up and does't bleed down so I assume Master cyl is not leaking by--BUT --I have to push the brake real hard and I can stop quickly if I need to but realy have to push hard-Is there some kind of a booster that could not be working???-This brake system doesn't have a vacum booster like a car but really don't know how the booster would work or even where it is-Rich

enblethen

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Posted: 02/27/12 08:21am Link  |  Print  |  Notify Moderator

You could have a hydro boost which works off the powering steering pump. Hydro boost is located under driver's seat area.


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Gale Hawkins

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Posted: 02/27/12 08:32am Link  |  Print  |  Notify Moderator

May not be helpful but does give you the name of the system to search on.

Scott & Jill

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Posted: 02/27/12 09:29am Link  |  Print  |  Notify Moderator

Did you bleed the sys sound like it just needs to be bled?


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Posted: 02/27/12 12:19pm Link  |  Print  |  Notify Moderator

Scott we bleed the system quite a few times and now if I pump the peddle it gets no harder or higher so we have ruled more bleeding out--I just took her on a shake down run on the Hwy and it seems I got the same amount of brake that I had before I started--MAYBE it is as good as it gets-Maybe the newer Rigs just have better brakes-When we get back from FL I will talk to couple mechanics and get their opinion after they drive it---Rich

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Posted: 02/27/12 03:36pm Link  |  Print  |  Notify Moderator

racer99 wrote:

Scott we bleed the system quite a few times and now if I pump the peddle it gets no harder or higher so we have ruled more bleeding out--I just took her on a shake down run on the Hwy and it seems I got the same amount of brake that I had before I started--MAYBE it is as good as it gets-Maybe the newer Rigs just have better brakes-When we get back from FL I will talk to couple mechanics and get their opinion after they drive it---Rich

Dose the reservoir ever goes down while you are pumping or dose it stays full.

Jim@HiTek

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Posted: 02/27/12 04:03pm Link  |  Print  |  Notify Moderator

enblethen wrote:

You could have a hydro boost which works off the powering steering pump. Hydro boost is located under driver's seat area.


I'd want to check this too. Bad/loose power steering belt, low on fluid, or partially plugged screen could all have something to do with this. The Hydro-boost has a large plastic screen and several 'O' rings. The screen could be plugged or an 'O' ring could have broken.

Tip off that it might be a power steering pump issue would be squealing when you turn the steering wheel full left or right.


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Posted: 02/27/12 06:52pm Link  |  Print  |  Notify Moderator

Yes the reservoir does go down as we bleed the brakes but we kept checking to make sure we didn't run it dry-All the belts are tight-I pretty much come to the conclusion it is was it is and to live with it the other MH I drove was a 2005 and mine is 1991 so even though I got 4 wheel disc brakes they just aren't as good as newer models-Thanks Rich

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