Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: fiend61 on 29 May 2010, 22:48:24

Title: brake wear sensors
Post by: fiend61 on 29 May 2010, 22:48:24
hi all
just a question that has me stumped at the moment  :-/ , i have just had front pads replaced and when trying to fit the the new wear sensors they seem to be too small for the hole in the pad, i would have thought that it would be a tight fit to stop them moving around but i might be wrong (as usual)   :-?
so if any of the wise men out there can shed some light i would be most gratefull  ;D
Title: Re: brake wear sensors
Post by: tunnie on 29 May 2010, 22:55:25
i found the new sensors a right pig to fit, use some pliers, but be careful!
Title: Re: brake wear sensors
Post by: fiend61 on 29 May 2010, 23:11:17
thanks for reply tunnie but what i meant was that the pin (thingy) on the sensor seems to small for the hole in the pad, in otherwords will fall out,
Title: Re: brake wear sensors
Post by: feeutfo on 29 May 2010, 23:14:27
are they vx pads? it is a tight fit, but certainly would not use pliers personally, sensor is far to fragile ime...

little stud should go in up to the hilt, work it in by hand (< ;D)
Title: Re: brake wear sensors
Post by: tunnie on 29 May 2010, 23:14:35
Quote
thanks for reply tunnie but what i meant was that the pin (thingy) on the sensor seems to small for the hole in the pad, in otherwords will fall out,

Yup i know, use the pliers to put bit more force on the pin. Thats what i did....

But be careful not to crack the plastic  :y
Title: Re: brake wear sensors
Post by: tidla on 29 May 2010, 23:15:16
speaking generally sometimes the sensor is clipped into the steel part of the pad to keep it secure.(assuming new sensor wires, old ones break)
Title: Re: brake wear sensors
Post by: Andy B on 29 May 2010, 23:21:48
Quote
hi all
just a question that has me stumped at the moment  :-/ , i have just had front pads replaced and when trying to fit the the new wear sensors they seem to be too small for the hole in the pad, i would have thought that it would be a tight fit to stop them moving around but i might be wrong (as usual)   :-?
so if any of the wise men out there can shed some light i would be most gratefull  ;D

When the sensor is clipped into the butterfly shaped anti-rattle spring, it should clip in frmly enough that it doesn't come out, but it wil still turn axially.
Title: Re: brake wear sensors
Post by: fiend61 on 30 May 2010, 08:48:49
thanks all, andy what do mean "clipped into the anti rattle spring"?   when i have the pad in my hand and put the sensor in the hole of the pad it falls straight in, turn it upside down and it will fall out, does the antirattle spring somehow keep it in when it is in the caliper??   sorry must sound really thick   :-/ :-[
btw these are brand new wear sensors and leads from vaux world
Title: Re: brake wear sensors
Post by: Lizzie_Zoom on 30 May 2010, 08:54:49
Quote
thanks all, andy what do mean "clipped into the anti rattle spring"?   when i have the pad in my hand and put the sensor in the hole of the pad it falls straight in, turn it upside down and it will fall out, does the antirattle spring somehow keep it in when it is in the caliper??   sorry must sound really thick   :-/ :-[
btw these are brand new wear sensors and leads from vaux world

The spring that is anchored around the hole in the pad also retains the sensor when placed in the hole.  You will find if you compress the spring, it will widen the hole for the sensor to slot into with relative ease.

I would not recommend the use of pliers directly onto the sensor; they are too brittle for that type of treatment and you WILL break them as you are pressing against the full pressure of the springs! ::) ::) ;) ;)
Title: Re: brake wear sensors
Post by: fiend61 on 30 May 2010, 09:17:34
thanks lizzie, but that is what i am saying with the pad in my hand (spring not compressed) the wear sensor will fall into and out of the hole in the pad??? there is no tight fit at all  :-/
Title: Re: brake wear sensors
Post by: same #same# on 30 May 2010, 09:23:22
Quote
thanks lizzie, but that is what i am saying with the pad in my hand (spring not compressed) the wear sensor will fall into and out of the hole in the pad??? there is no tight fit at all  :-/
are you sure they are the right ones 5.5mil hole.
Title: Re: brake wear sensors
Post by: fiend61 on 30 May 2010, 10:14:19
not sure samesame but got another set of pads and they are exactly the same hole seems to big for sensor, when the pad goes into the caliper does the anti rattle spring tighten up arond arond the pin of the sensor, cant seem to get my head round this at all  :-?
Title: Re: brake wear sensors
Post by: YZ250 on 30 May 2010, 10:34:39
Have you still got the old sensor to compare the new one against or the old pads to view worn pin size. :-/ If you have you could poke pin out of old one's and compare. :y
Title: Re: brake wear sensors
Post by: fiend61 on 30 May 2010, 10:38:35
no sorry yz250 havent got them chucked them when i got new ones DOHH  :-[
Title: Re: brake wear sensors
Post by: Lizzie_Zoom on 30 May 2010, 10:41:28
Quote
thanks lizzie, but that is what i am saying with the pad in my hand (spring not compressed) the wear sensor will fall into and out of the hole in the pad??? there is no tight fit at all  :-/

The sensor pin then would seem to be the wrong size, as in my experience the correct size never just falls in or out of the sensor hole! :o :o ;) ;)
Title: Re: brake wear sensors
Post by: YZ250 on 30 May 2010, 10:48:29
As they fit like a jack plug, first stage goes in and then second stage needs a firmer push but if yours are dropping all the way in it would appear that the sensor pin is too small as Lizzie said. :-/
Title: Re: brake wear sensors
Post by: tony2 on 30 May 2010, 10:48:35
hi replaced my front pads recently and sensor broke , purchased new sensor and found the oppisite to you sensor pin to big to go in pad ended up drilling pad to fit is it possible there are two different sizes ? [ :edit must type faster ;D            
Title: Re: brake wear sensors
Post by: Lizzie_Zoom on 30 May 2010, 10:51:52
Quote
hi replaced my front pads recently and sensor broke , purchased new sensor and found the oppisite to you sensor pin to big to go in pad ended up drilling pad to fit is it possible there are two different sizes ? [ :(

Not if you buy sensors Vx part no. 090495144 to fit genuine Vx pads. ;) ;)

Cannot answer for patterns :P
Title: Re: brake wear sensors
Post by: fiend61 on 30 May 2010, 10:53:54
ok lizzie thanks, now can someone tell me if the pins come in different thicknesses i purchased these ones from vaux world through the reg of my car and i thought they were all the same except for the 2.0l and 2.2l which are listed as being a different part number?????
the info i have on the packaging is-
#EQ 62 38 323
#EQ 90495144
pad sensor LC-95144
batch no 178820
if this means anything to anybody???
Title: Re: brake wear sensors
Post by: Lizzie_Zoom on 30 May 2010, 10:56:25
Quote
ok lizzie thanks, now can someone tell me if the pins come in different thicknesses i purchased these ones from vaux world through the reg of my car and i thought they were all the same except for the 2.0l and 2.2l which are listed as being a different part number?????


That is probably the problem ::) ::)

The number I quoted is definately for your 2.5 V6, as that was the ones I fitted for my dear departed example of that model ;) ;)
Title: Re: brake wear sensors
Post by: fiend61 on 30 May 2010, 11:02:15
ok thanks lizzie looks like i will be ordering from vauxhall first thing tuesday morning  :-[ and chuck they vaux world ones out as wont be able to return them as covered in grease now  :'(
thanks for everyones help  :y
hey just realised the part number is the same, think i will go to vauxhall on tuesday and try these sensors in another set of pads while i am there, never no might be faulty batch of pads???
Title: Re: brake wear sensors
Post by: hotel21 on 30 May 2010, 12:18:11
Would have thought that you could always glue them in with a wee gob of araldite?  Its really the thickness of the backing plastic thats the most important for when it wears down as the pads reduce....
Title: Re: brake wear sensors
Post by: markspark on 30 May 2010, 13:02:23
is ther a way of doing away with the pad sensor a resistor or something (what does it need to work)
Title: Re: brake wear sensors
Post by: hotel21 on 30 May 2010, 14:15:46
Quote
is ther a way of doing away with the pad sensor a resistor or something (what does it need to work)

I have used the old sensor wire in the past.  Simply remove the remains of the old sensor plastic then strip pack the plastic covering and short out the two wires.

When the disc wears down the plastic of the sensor it cuts the wire, breaking the circuit, thus activating the warning on the dash.  Bridging out the wire fools the car into thinking its still all OK.   :y
Title: Re: brake wear sensors
Post by: Chris_H on 30 May 2010, 15:46:36
Quote
is ther a way of doing away with the pad sensor a resistor or something (what does it need to work)
I used a resistor on my Senator when the discs were too worn to accommodate new sensors.  Can't remember the value but all you have to do is measure the new sensors or an unbroken old one.

100 Ohms springs to mind but it's only a distant memory.

I also remember the sensors being pretty loose with factory parts.  Didn't quite fall out on their own though.
Title: Re: brake wear sensors
Post by: Andy B on 30 May 2010, 16:00:44
Quote
....
I used a resistor on my Senator when the discs were too worn to accommodate new sensors.  Can't remember the value but  .....

Twisting the wires together as H21 says above is quite sufficient.  ;)  ;)  ;)
Title: Re: brake wear sensors
Post by: same #same# on 30 May 2010, 17:26:44
are the sensors round pin with 4 fins around it to locate it or the big fat pin with a lip on it and put spring on first and push in hole?