Tweeting noise

#11

"Chris Bartram" <news (AT) delete-me (DOT) piglet-net.net> wrote

Quote:

David wrote:

Morning Chris (I've been a silent fan of your VW guruness)

Blimey. Wouldn't say I'm a guru, just interested and slightly mecahnically
minded.

Quote:

Is this a job I could do alone as I did do the fronts have all the tools
even a rewind tool and a set if barely used axle stands

Oddly emough I've never had a set of rear calipers apart! I will doubtless
have to soon with our Lupo. Anyway, it should all be similar to a front,
with the exception of needing a rewind tool.

Aparantly after some research along with a rewind tool it is advised you
undo a bleed nipple (never done this before) then use the rewind tool to not
force brake fluid the wrong way up the abs pump... but many have said they
didn;t and it went back fine.

Quote:

You should just get away with taking it off, cleaning up anyting that
moves, and putting it back.

Thats my first port of call on Wednesday when I have some free time. Got
some nice buttery smelling cooper grease to use today

Quote:

I guess my next question is how do I determine which caliper is partially
seized. Is freeing a seized caliper a job of working something to and fro
or is it new caliper time ?

jack the back up and spin the wheels. You might feel one dragging. To be
honst, it's best to do the pair.

I was planning on changing the discs and pads whilst it all apart for good
measure as the discs do need doing. I don't want to use the old pads even
though they are only half worn I may aswell put a new set on with the new
discs for good measure.

Quote:

If it is new caliper time does this mean I need to bleed the brakes after
...so I would need an ezibleed doodah
If you did fit a new caliper, then a eezilbleed is strogly reccomended.

I'll pick up a eezibleed doodah if I need a new caliper. I'm optimistic that
after a good cleanup of the hub and greasing of the hub and back of new pads
and the fitting of new discs it all works out well. A little nervoud of
touching this bleed nipple thing as scared of introducing air to the system.
I'll get one of those brake flexi clamps if I need a new caliper.

Thanks for the input all.

#12

"Rosie" <boyt (AT) arach (DOT) org> wrote

Quote:

"David" <none (AT) host (DOT) com> wrote

MK4 golf 1.6s 2001

Within the last week after driving for about 10/15 minutes when I apply
the
brakes there is a what I can best describe as a tweeting noise fairly
loud
and noticeable. It sounds as though it is coming from the rear of the
vehicle.

I took the rear wheels off the pads have had quite even wear on both
sides
and about 50% used both sides.

The discs on both rears looks quite worn and have a lip on them.

Could it be the discs causing this auwful noise ?

Advice welcomed :-)

I've had several instances, with various vehicles I've owned, where the
pad becomes held firmly in it's recess by a combination of road dirt and
rust, the symptoms of which have been christened by the family, "dicky
bird wheel" - rather similar to your description of the problem you're
experiencing.

<sniper super helpful post>

Thanks alot for the post Rosie it was very helpful!!

Loving the term you've given it dickey bord wheel I'll remember that one

Thanks for the post and will post back results once I get it all stripped
down.

#13

On Sun, 07 Jun 2009 20:49:03 +0100, David <none (AT) host (DOT) com> wrote:

Quote:

"Chris Bartram" <news (AT) delete-me (DOT) piglet-net.net> wrote in message
news:aawWl.38708$OO7.25997 (AT) text (DOT) news.virginmedia.com...
David wrote:

Morning Chris (I've been a silent fan of your VW guruness)

Blimey. Wouldn't say I'm a guru, just interested and slightly
mecahnically
minded.

Is this a job I could do alone as I did do the fronts have all the
tools
even a rewind tool and a set if barely used axle stands

Oddly emough I've never had a set of rear calipers apart! I will
doubtless
have to soon with our Lupo. Anyway, it should all be similar to a front,
with the exception of needing a rewind tool.

Aparantly after some research along with a rewind tool it is advised you
undo a bleed nipple (never done this before) then use the rewind tool to
not
force brake fluid the wrong way up the abs pump... but many have said
they
didn;t and it went back fine.

You should just get away with taking it off, cleaning up anyting that
moves, and putting it back.

Thats my first port of call on Wednesday when I have some free time. Got
some nice buttery smelling cooper grease to use today

I guess my next question is how do I determine which caliper is
partially
seized. Is freeing a seized caliper a job of working something to and
fro
or is it new caliper time ?

jack the back up and spin the wheels. You might feel one dragging. To be
honst, it's best to do the pair.

I was planning on changing the discs and pads whilst it all apart for
good
measure as the discs do need doing. I don't want to use the old pads even
though they are only half worn I may aswell put a new set on with the new
discs for good measure.

If it is new caliper time does this mean I need to bleed the brakes
after
...so I would need an ezibleed doodah
If you did fit a new caliper, then a eezilbleed is strogly reccomended.

I'll pick up a eezibleed doodah if I need a new caliper. I'm optimistic
that
after a good cleanup of the hub and greasing of the hub and back of new
pads
and the fitting of new discs it all works out well. A little nervoud of
touching this bleed nipple thing as scared of introducing air to the
system.

If you're squeezing the cylinder back at the same time there's no chance
of introducing air.

Quote:

I'll get one of those brake flexi clamps if I need a new caliper.

Thanks for the input all.

#14

David wrote:

Quote:

Aparantly after some research along with a rewind tool it is advised you
undo a bleed nipple (never done this before) then use the rewind tool to not
force brake fluid the wrong way up the abs pump... but many have said they
didn;t and it went back fine.

That's reccomended for ABS-equipped cars, and in the past I've always

dome it. It's not much effort and it probably gives you extra peace of
mind regarding the (expensive) ABS pump.

However....

If you read the official manual for our Lupo, when changing front brake
pads it just says to push the piston back, so I just did that. It was fine.

Mind you, it's had a recent fluid change. The reason for undoing the
bleed nipple is twofold: you keep old, potentially dirty fluid away from
the pump, and you don't apply reverse pressure to it.

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Tweeting noise

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Re: Tweeting noise - 06-07-2009 , 03:49 PM

Re: Tweeting noise - 06-07-2009 , 03:51 PM

Re: Tweeting noise - 06-07-2009 , 04:19 PM

Re: Tweeting noise - 06-08-2009 , 03:06 AM