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I purchased a DNA mammoth 52 spoke wheel with the abs bearings. Does both bearings contain the abs sensor? I have one bearing with a green dust seal and the other bearing has a black dust seal. Which bearing should face the abs sensor?
Thanks
Norris
Thanks for the fast reply. That is the way I mounted the wheel. I need to check what code I have. The abs light stays on. I changed the wheel and handle bars. So there is a few possibilities of why the light is on
Technically the sensor is not in the bearing itself. The only difference between ABS and NON-ABS bearings is the thickness. ABS bearings (the side the sensor attaches to) are thinner than NON-ABS bearings.
Technically the sensor is not in the bearing itself. The only difference between ABS and NON-ABS bearings is the thickness. ABS bearings (the side the sensor attaches to) are thinner than NON-ABS bearings.
ABS bearings are 3mm thicker than the non-ABS bearing. That extra 3mm holds whatever it is that the ABS sensor ring monitors. It may contain magnets, or it may contain ferrous elements that interact with the ABS sensor ring that fits on the axle. I just don't know. I wish someone that does know would chime-in on how the sampling of the HD ABS system works. I read somewhere where it is not even close to the number of samples taken by the BMW ABS system when determining when to activate ABS.
By the way, the last ABS bearing I purchased had an orange grease seal and it was made in Canada. Pic below with ABS on the left:
Last edited by Lowcountry Joe; Mar 10, 2013 at 06:04 PM.
I pulled the codes tonight and the code was c1021 front wheel speed sensor always equal 0mph. I will look tomorrow night if I unplugged the abs sensor when I changed the handle bars. If all checks out I plan on turning the wheel around. Like I said the wheel had a green grease seal and a black one. I assembled it with the green seal facing the sensor. 50/50 shot. Will let you guys know what I find.
Thanks for everyone's help
Norris
Make sure you have the front sensor nested in the proper position. It's supposed to fit against a stop on the inside of the left lower. In other words, if the axle nut was loose enough, you would rotate the abs sensor ring counterclockwise until it stops. Properly nested, the lead will leave the sensor at about the 2 o'clock angle. That's where it needs to be. Also important, ensure that you have the correct side of the sensor facing in toward the bearing. Finally, make sure that the abs lead is connected properly under the left side of the faring.
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