brake pulsation brake shoe min.thickness

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brake pulsation brake shoe min.thickness

Post by simpo1961 on Wed Jun 11, 2014 5:13 pm

I get a pulsation thru the pedal when applying the brakes. It is worse when pressed hard. I have checked the the pads and shoes they seem ok. what is the minimum thickness for the rear shoes?
I did notice that one of the rear cylinders is weeping slightly could this be the issue?
I did think of starting it with the rear wheels in the air then I can confirm which end the issue is coming from?

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Re: brake pulsation brake shoe min.thickness

Post by skybo on Wed Jun 11, 2014 5:19 pm

are you sure its coming from back. it sounds like brake discs on front a warped?

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Re: brake pulsation brake shoe min.thickness

Post by simpo1961 on Wed Jun 11, 2014 5:37 pm

not sure yet discs look ok to the eye and do not make any unusual sounds when spun by hand........ #I was trying to think of a way of spinning them faster so I can try the same as on the back lol

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Re: brake pulsation brake shoe min.thickness

Post by skybo on Wed Jun 11, 2014 5:40 pm

my van was very stable sat on breeze blocks. how long you had van for?

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Re: brake pulsation brake shoe min.thickness

Post by d1noh on Wed Jun 11, 2014 8:03 pm

for sure the rear cylinder wants changing sooner rather than later, did you pull the pads out to inspect? have you checked the wheel bearings? had the similar scenario last weekend, turned out to be a wheel bearing with very very little play and a seized front pad that I had to hamer out

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Re: brake pulsation brake shoe min.thickness

Post by simpo1961 on Thu Jun 12, 2014 5:36 pm

Right, jacked up the rear of the van, first left side then right side started it, ran it up to an idicated 40 mph and and then tried the brakes no vibration felt. This would tend to indicate the front brakes. Damn! time to have a closer look. The pads looked evenly worn. Can you hear/see a warped disk when spinning it by hand? or would you have to spin it up with a power tool?

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Re: brake pulsation brake shoe min.thickness

Post by simpo1961 on Thu Jun 12, 2014 5:38 pm

Also I'm in germany and new wheels cylinders are really pricey (what a suprise)
any good sources in the uk?

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Re: brake pulsation brake shoe min.thickness

Post by FrontBackSide2Side on Thu Jun 12, 2014 6:07 pm

The best way to check for a warped disc is to use a DTI Smile
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Re: brake pulsation brake shoe min.thickness

Post by simpo1961 on Thu Jun 12, 2014 6:15 pm

Haven#t got a dti :-(

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Re: brake pulsation brake shoe min.thickness

Post by simpo1961 on Thu Jun 12, 2014 6:21 pm

Also are hijets known for disc problems? this one is not often driven heavily loaded and cologne is flat flat flat. I have been told it has been doing this for some time as well as pulling to the left. I replaced the lower suspension arm (bent) this cured the pulling to the left issue and improved the brake thing (maybe it just felt better though)

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Re: brake pulsation brake shoe min.thickness

Post by d1noh on Thu Jun 12, 2014 6:22 pm

let us know what your vehicle details is inc year and will get you a price
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Re: brake pulsation brake shoe min.thickness

Post by FrontBackSide2Side on Thu Jun 12, 2014 6:58 pm

if you havent got a dti you can put a straight edge across each side of the disc to give you a good idea if its warped Smile
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Re: brake pulsation brake shoe min.thickness

Post by simpo1961 on Fri Jun 13, 2014 1:44 pm

this is on a multicoloured, fish painted 1995 1.0 hijet van.

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Re: brake pulsation brake shoe min.thickness

Post by FrontBackSide2Side on Fri Jun 13, 2014 4:32 pm

hmmm... we might need to see this one Laughing
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