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Old 30th September 2016, 09:06   #28
Arctic
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HI Larry.
You really need to get this on a T4 in my opinion to move forward, whom is closest to you ( larryr123 ) ? where is that place.

A few weeks back a nano member had the same trouble, he changed the sensor after drilling it out, all was ok passed the initial test but he still had pulsing at the brake at low speeds.

It lasted for a day and the ABS then reverted back to no speedo etc, we decide to remove the hub and replace it with one we had spare and hey presto all was ok, what we did notice was the debris left behind from drilling may have damaged the magnectic ring

So therefore you replacing a new wheel bearing it should have been ok, is the speedo working ok, if so then it could be one of the other bearings ie the rear OS etc

Remember it is the side of the senor which reads the ring in the bearing not the tip of the senor on the front, the rear sensors use the tip of the senor.


Note the magnet ring missing
1

2


You can see the black magnet ring on these below,
3

4

You can see now how if you drill out the sensor how easy it is to damage the ring, when dealing with the front ABS I would remove the diss etc to make sure all is clean, do this even if you are only changing the sensor.

It is best if you have to change the front sensor that you try and remove with out drilling first, if you do need to drill it out snap the sensor off flush once the bolt as been removed, drill down the centre about 12mm with a 3mm drill then screw in a wood screw with a flat head & domed top, you can then prise out the section of the sensor using a claw hammer or pry bar with a fork cut into it, but this will only do you any good if it is the senor in the first place.

To be honest most of these sensors are robust and most of the time it is the magnetic rings that fail, or pic up rust particles etc

As I said above at the beginning T4 will pinpoint your problem for sure.
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Arctic
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Last edited by Arctic; 11th December 2016 at 10:23.. Reason: spelling
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