Is there a trick to getting the rear hubs off? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Ultramaroon · 12-23-2018, 11:27 PM

It is much worse than any sort of driving due to the peak forces involved. A hammer blow dissipates high energy over a very short period of time. That is not remotely similar to even the force of a pothole strike transmitted through a tire.

ZionsWrath · 12-24-2018, 12:08 AM

Rip my bearings then, i won't tell them if you don't

Ultramaroon · 12-24-2018, 12:41 AM

The net effect may be as little as cutting a few thousand miles off of their overall life but it's real.

For the same reason that the vehicle weight must not rest on the wheels with the axle nut loosened, it's MUCH worse to hammer on that assembly with a loose axle nut than with it cinched up so the balls are properly loaded up in the races.

Here's a pretty good picture of what happens internally. The wheel bearings are a flavor of duplex angular contact type.

The axle nut is loose on the left.

http://www.bardenbearings.co.uk/index.cfm_articleid_717

dstrout · 12-24-2018, 04:15 PM

So, new knuckles and bearings it is. Took the knuckle completely off, soaked it with PB Blaster, and took a 2 1/2 lb hand sledge to it from the back side. No movement.

The next question is, is it possible to disconnect the ebrake cable from the knuckle / bearing assembly? I don’t mind buying a new assembly but the ones I see on eBay have the ebrake cable with them which doesn’t bode well. Am I going to end up having to remove and replace the ebrake cable too?

Thanks!

Ultramaroon · 12-24-2018, 04:46 PM

No. The cable clips to the back plate.

12-23-2018, 11:27 PM	#15
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	It is much worse than any sort of driving due to the peak forces involved. A hammer blow dissipates high energy over a very short period of time. That is not remotely similar to even the force of a pothole strike transmitted through a tire. __________________ service manuals

12-24-2018, 12:08 AM	#16
ZionsWrath Thanks Join Date: Apr 2013 Drives: BRZ Location: NY Posts: 4,163 Thanks: 5,989 Thanked 3,100 Times in 1,498 Posts Mentioned: 38 Post(s) Tagged: 3 Thread(s)	Rip my bearings then, i won't tell them if you don't __________________

12-24-2018, 12:41 AM	#17
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	The net effect may be as little as cutting a few thousand miles off of their overall life but it's real. For the same reason that the vehicle weight must not rest on the wheels with the axle nut loosened, it's MUCH worse to hammer on that assembly with a loose axle nut than with it cinched up so the balls are properly loaded up in the races. Here's a pretty good picture of what happens internally. The wheel bearings are a flavor of duplex angular contact type. The axle nut is loose on the left. http://www.bardenbearings.co.uk/index.cfm_articleid_717 __________________ service manuals

12-24-2018, 04:46 PM	#19
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	No. The cable clips to the back plate. __________________ service manuals

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12-24-2018, 04:15 PM	#18
dstrout Member Join Date: Jun 2015 Drives: 2013 BRZ Location: Annapolis, MD Posts: 82 Thanks: 18 Thanked 13 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	So, new knuckles and bearings it is. Took the knuckle completely off, soaked it with PB Blaster, and took a 2 1/2 lb hand sledge to it from the back side. No movement. The next question is, is it possible to disconnect the ebrake cable from the knuckle / bearing assembly? I don’t mind buying a new assembly but the ones I see on eBay have the ebrake cable with them which doesn’t bode well. Am I going to end up having to remove and replace the ebrake cable too? Thanks!

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