Front "clunking"

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 13:29

'ello guru's...

I have a funny "clunking" noise coming from the front brake area.
If I pull the front brake on gently the noise stops - I put new pads in t'other day and noticed that one or two of the pistons were seized/sticky - could do with a strip/clean but was hoping to get away with it for a while ....

The head bearings are OK, as are the wheel ones..

Any ideas?

Cheers,

Pete.

Post by **Steve-TC1** » 27 Mar 2007, 15:56

worn disc bobbins [bike in gear , kneel infront of front wheel with knee against front wheel, , pull your disc sharply forwards , is there play

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 16:04

TorqueC1 wrote:worn disc bobbins [bike in gear , kneel infront of front wheel with knee against front wheel, , pull your disc sharply forwards , is there play

I'll give it a go ... thanks (as ever) Torque

If they are indeed bugge^H^H^H^H^Hworn, is it a safety issue, or can it wait a few weeks?
(thinking of putting a ZX10R frontend on t'other 9R (if I can work out the speedo cable thingy) in which case a nice sorted 9R frontend with wavey discs will become available

)

Post by **Steve-TC1** » 27 Mar 2007, 16:06

lets just say it'll fail an mot , but i rode around for 11 months + with mine doing it

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 18:14

The bobbins appear fine - no movement at all when doing as you suggested Torque ... mind you, my head bearings need adjusting (again) - 3 times in 3 days!
Not were the noise is coming from though - it's coming from lower down, caliper area.
I will probably have them off over the weekend (if I get time) and see if there is anything obvious.

Post by **Steve-TC1** » 27 Mar 2007, 18:20

sounds like it's had new head bearings and they weren't quite seated properly ,

what pads did you use [brand ]

souly · Post by **souly** » 27 Mar 2007, 18:53

It could be the pads are clunking against the discs when you apply the brake sharply.

This could be possible if you have a sticking piston that suddenly pops out.

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 19:11

I fitted EBC HH pads.

The clunking goes away when the brakes are applied...

I am just going to check he head bearings now

chance · Post by **chance** » 27 Mar 2007, 19:29

is it the pads moving and clunking against the brake pad retaining pin

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 19:55

Could well be - to be honest I need to strip and clean the calipers anyway - I have 2 very stuck pistons.
I was thinking of getting some spare ones anyway..

hey9r · Post by **hey9r** » 27 Mar 2007, 20:03

So it could be missing the shims

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 20:14

? shims .... what shims would that be then..?

hey9r · Post by **hey9r** » 27 Mar 2007, 20:20

bobtheimp wrote:? shims .... what shims would that be then..?

Anti rattle shims
They put a bit of tension on the pads.
Or did they not fit anty on the early 9s.
Even on the backs of the pads anti squel shim some times discarded with aftermarket pads can help.

bobtheimp · Post by **bobtheimp** » 27 Mar 2007, 20:28

Anti-squeal pads are present, no anti-rattle tho'

Apparently the noise is down to wear and tear on the calipers, Dinorod2 had the noise checked out .. dunno what wear that is tho' ...
Think I will get a spare pair of calipers and rebuild them!

hey9r · Post by **hey9r** » 27 Mar 2007, 21:34

bobtheimp wrote:Anti-squeal pads are present, no anti-rattle tho'

Apparently the noise is down to wear and tear on the calipers, Dinorod2 had the noise checked out .. dunno what wear that is tho' ...
Think I will get a spare pair of calipers and rebuild them!

They 6pots or the 4 pots

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