Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: fos605 on 12 June 2008, 19:26:35

Title: Front Pad Rattle ?
Post by: fos605 on 12 June 2008, 19:26:35
Gettimg a rattle noise from around drivers side front wheel.  The only thing I can find loose at all is the front disc pad. There was nothing to stop it moving around and the noise did seem appropriate, however  
I have v6 2.5 and am told there is no "antirattle spring" .

Has anyone had any similar experience and could suggest ideas to cure it.

Really noticable when travelling over rough roads.
Title: Re: Front Pad Rattle ?
Post by: Richard A on 12 June 2008, 19:32:40
Can be the disc metal back plate, if it gets bent it can make contact with the rotating disc, makes a lot noise over broken surfaces, bend it out of the way, also check drop links.
regards
richard a
Title: Re: Front Pad Rattle ?
Post by: fos605 on 12 June 2008, 19:34:49
Thanks Richard,  but it doesnt seem like the back plate,  excuse my ignorance but what are drop links?
Title: Re: Front Pad Rattle ?
Post by: Darth Loo-knee on 12 June 2008, 19:49:39
This is a droplink mate :y

(http://i155.photobucket.com/albums/s304/Loo-knee/Lights011.jpg)
Title: Re: Front Pad Rattle ?
Post by: fos605 on 12 June 2008, 19:59:20
Thanks for the photo.

I now its hard to describe noises, but I would have thought if the drop link was worn then it would have made a knoking noise, not the rattle type of noise I am getting.

I am almost sure it is the front pad loose,  As I said I was expecting a spring clip type of thing, I think they are called antirattle spring, but am told on this model they are not, so what is there to stop them from rattling?
Title: Re: Front Pad Rattle ?
Post by: Darth Loo-knee on 12 June 2008, 20:15:11
Your welcome for the picture :y
If the droplink is knackered it does make a clonking noise when you go over bumps mate :y

As for your rattling you think its your pad you say? when you fitted them did you put copper grease on the rear of it? i think this is supposed to stop rattling.
If I remember rightly there are two dowels that go through the holes on the pads and there is a spring that holds the pad in place... it is a while since doing mne so i could be wrong!!
Title: Re: Front Pad Rattle ?
Post by: fos605 on 12 June 2008, 20:17:46
I havent changed the pads recently.  but will try the copper grease this weekend.  Many thanks for you suggestions.
Title: Re: Front Pad Rattle ?
Post by: Darth Loo-knee on 12 June 2008, 20:23:22
Are they worn then and perhaps moving more than usual?
Title: Re: Front Pad Rattle ?
Post by: FRE07962128 on 12 June 2008, 20:28:41
Quote
Can be the disc metal back plate, if it gets bent it can make contact with the rotating disc, makes a lot noise over broken surfaces, bend it out of the way, also check drop links.
regards
richard a


I had the same thing on my old Toyota, which a garage claimed was a wheel bearing going!  Flaming muppets! >:(  It took me 3 minutes to find this out and two minutes to adjust this plate to stop it rubbing on the back of the disc. :y
Title: Re: Front Pad Rattle ?
Post by: fos605 on 12 June 2008, 20:31:19
No I dont think they are worn too much.

Will have a good look over the weekend (again)
I did find one of the caliper guides seized but managed to free that OK, which at the time I thought I had found the fault, but still the rattle!!
Title: Re: Front Pad Rattle ?
Post by: FRE07962128 on 12 June 2008, 20:31:43
Quote
Gettimg a rattle noise from around drivers side front wheel.  The only thing I can find loose at all is the front disc pad. There was nothing to stop it moving around and the noise did seem appropriate, however  
I have v6 2.5 and am told there is no "antirattle spring" .

Has anyone had any similar experience and could suggest ideas to cure it.

Really noticable when travelling over rough roads.

How much play is there?  Is the piston hard against the brake pad back plate?
 :-?
Title: Re: Front Pad Rattle ?
Post by: FRE07962128 on 12 June 2008, 20:33:21
Quote
No I dont think they are worn too much.

Will have a good look over the weekend (again)
I did find one of the caliper guides seized but managed to free that OK, which at the time I thought I had found the fault, but still the rattle!!

Are any warning brake lights showing on the dash?
Title: Re: Front Pad Rattle ?
Post by: fos605 on 12 June 2008, 20:34:33
Hi Lizzie ,

The pad I think that is causing the rattle is the one on its own nearer the wheel, not the one in contact with the piston.

Title: Re: Front Pad Rattle ?
Post by: FRE07962128 on 12 June 2008, 20:37:48
Right, thanks.  I will think on for you....but how about that back plate? :-?
Title: Re: Front Pad Rattle ?
Post by: FRE07962128 on 12 June 2008, 20:38:57
How much play is there?  Are the holding pins worn / loose?
Title: Re: Front Pad Rattle ?
Post by: TheBoy on 12 June 2008, 20:44:30
there is an antirattle spring integral to each front pad
Title: Re: Front Pad Rattle ?
Post by: albitz on 12 June 2008, 20:46:40
seized caliper slider ?
Title: Re: Front Pad Rattle ?
Post by: aoliver on 12 June 2008, 22:10:40
If it's the pad then the rattle will stop when the brakes are applied, and reappear when they are released.
Title: Re: Front Pad Rattle ?
Post by: fos605 on 13 June 2008, 08:10:58
As I mentioned I first found the caliper slider seized, but after releasing that still  the  rattle, so if there isnt an antirattle spring,and some one says there should be,  what keeps the pad opposite the piston tight?
By the way yes the rattle does stop if I apply the brakes, and then comes back on after resleasing the brakes.
Title: Re: Front Pad Rattle ?
Post by: Matchless on 13 June 2008, 10:35:53
There should be an anti-rattle spring riveted to each pad, the caliper presses against these and forces the pads rearwards into the pad carrier.
Title: Re: Front Pad Rattle ?
Post by: fos605 on 13 June 2008, 16:57:53
Solved :)

(http://lh4.ggpht.com/fos605/SFKTyk13XGI/AAAAAAAAAKw/azgVb747AHQ/s800/P1010075.JP)

Strange but on both sides, the outside pad had the spring was missing!
When fitting the new pads, genuine Vauxhall ones,  one had a rubber film on the other just bare metal (like the one in the picture), otherwise looked the same, which one fits next to the piston?

One other thing the disc pad wear sensors, that clip into the pad, one seems very very loose, the other I broke trying to pry off the old disc pad! Are there different sizes?

Anyway need to go and get 2 more pad sensor wires and fit them.

Thanks to everyone who tried to help, its much appreciated :y
Title: Re: Front Pad Rattle ?
Post by: FRE07962128 on 13 June 2008, 17:42:46
That's good you have got to the bottom of it!  Most things are sorted by the guys (and sometimes us dolls!) on this site! ;D :y
Title: Re: Front Pad Rattle ?
Post by: Marks DTM Calib on 13 June 2008, 17:57:23
Pad without the rubber pad goes to the caliper piston.....pad with rubber pad goes to the slider frame.

And note the directional arrows on the pad.