Rear ABS ring question......

[strawboss]

It's not a solid magnet. It's tougher than it looks. Prying it off gently will just bend the shat out if it. Best method is quick. Use the edge of the drum as a pivot point for pry bar, give the end a whack it'll pop right off. Make sure to use a relatively sharp or square edged pry bar or the coating will just scrape off.

Oh now I think I know....something like the magnetic gasket on those old fridges from the 70's-80's?

[strawboss]

Thanks Strawboss. I see now it's a different design then I've worked on before. I have to apologize for my last post, I hope I didn't confuse people...

No worries klroger, I've been there before!

[strawboss]

I've even looked on the Kenny U-Pull site as the drum is easy to remove, nothing....

[strawboss]

Yeah I've done it a few times. Just use a pry bar and give it a good whack to pop it off it off. As for reusing the old bearing...I'd just source some dirt cheap ones from the rockauto or parts avatar. Make sure they go back in the correct way.

Work was able to source some dirt cheap drums with bearings and studs installed already. They were around $30-50 wholesale iirc. I'll try to get the part number tomorrow.

I found the time to work on that drum & I see why you don't recommend reusing the old bearing, the outside race isn't accessible when pressing it out, so the inner race has to bear all the force. That sucks.

I'll be buying a new OE drum from the dealer unless I can find a aftermarket drum in Canada that is complete

[Fummins]

I haven't been able to find that part number for the drum I used at work. They're $100 a piece from Rockauto now! When I replaced them on my 2014 I bought from Partsavatar and messaged them to verify the drum size and if it was bare or not. It came bare...I ordered cheapo clearance wheel bearings from rockauto and resued my old studs and abs rings.

[strawboss]

I haven't been able to find that part number for the drum I used at work. They're $100 a piece from Rockauto now! When I replaced them on my 2014 I bought from Partsavatar and messaged them to verify the drum size and if it was bare or not. It came bare...I ordered cheapo clearance wheel bearings from rockauto and resued my old studs and abs rings.

Yeah, I saw those on RockAuto, I wasn't 100% sure at the time if they came with rings and bearings.

I don't want to have my Mirage held up waiting on customs/delivery & so forth so I bit the bullet and placed an order with the dealer in Pembroke. If the other drum is marginal I'll baby it while the Rock Auto drum makes it's way up north.
May not matter much as the shoes are taking their own sweet time arriving at Napa....

I swear the V8 in the Sierra just swills the gas....so the money I would've saved on a RockAuto drum would be offset by the fuel bill while driving "Black Beauty" in the meantime....

[Fummins]

I've had pretty good luck with Rockauto stuff lately. I ordered a few tie rods for the van a week or so ago and paid a little more for quicker shipping. Parts came from Houston Texas to Edmonton fast. I ordered parts on a Wednesday evening and they showed up Friday afternoon. Just don't order from the US via UPS, I get hosed for duty and tax every time.

[strawboss]

I've had pretty good luck with Rockauto stuff lately. I ordered a few tie rods for the van a week or so ago and paid a little more for quicker shipping. Parts came from Houston Texas to Edmonton fast. I ordered parts on a Wednesday evening and they showed up Friday afternoon. Just don't order from the US via UPS, I get hosed for duty and tax every time.

I hear you....one of my first online US shipments was via UPS. Talk about getting hosed,but they only got me once! When I lived in the city and the vendor used UPS & wouldn't ship any other way, I would go to the Customs office at the Airport and clear the shipment myself!

[mohammad]

Hey Strawboss, I don't think the rings are magnetic, I think the sensor has the magnetic part in it & the toothed part of the ring passing the sensor is what sets up the frequency that the module sees to determine the wheel speed. If there is a crack in the ring that makes the distance between a couple of the teeth of the ring different from the rest, it will see that as the wheel stopping before others when slowing down. At least that was the way the system worked when I was on the wrenches a few years ago... Might be different now tho... Dunno...

They are a little more smarter than this. Modern ABS/traction control will detect that the ring is broken as you start to drive and throw the ABS/traction control dash lights and disable the system in an effort to prevent the ABS system from causing you too spin out.

[strawboss]

They are a little more smarter than this. Modern ABS/traction control will detect that the ring is broken as you start to drive and throw the ABS/traction control dash lights and disable the system in an effort to prevent the ABS system from causing you too spin out.

This type of tone ring (toothed) is what was used on my 2005 Smart fortwo.
It was mounted on the rear drive shafts close to the drum, exposed to the elements....rust here in Ontario built up between the axle shaft & the ring, eventually causing it to crack. So the system would detect the minute gap difference and activate the abs on low speed dry pavement stops....I found that the dealer fix was to "replace both rear axles" huge $$... so I found a supplier that made & sold the tone ring separately for $10 each and about 3 hours of work in my driveway had the abs working again....Oddly enough this defect didn't set an abs warning dash light.