Markymark
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| posted on 19/7/18 at 06:39 PM |
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Aagghhh, what am I doing wrong!!
OK guys I need your help!
So I'm fitting the wheel bearings into my Sierra rear hubs, tapped the outer races in so they sit flush on the lip, bearings greased up, seals
in, push in the front flange, tap in the shaft (lobro type), tighten the nut, so far so good.
When I tighten the nut up the bearing goes pretty much solid, just about turnable by hand at 150NM, that can't be right can it? I'm sure
they are supposed to be 250Nm??
What am I missing, I've stripped it down twice, inspected and refitted, I can't see anything wrong, they just seem far too tight!
Any help is as always greatly appreciated
Mark
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adithorp
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| posted on 19/7/18 at 07:09 PM |
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The outer races should go in as far as possible not just flush.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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ReMan
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| posted on 19/7/18 at 07:14 PM |
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Wot he said.."...
www.plusnine.co.uk
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rusty nuts
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| posted on 19/7/18 at 07:54 PM |
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As already stated you need to fit the bearings into the housing as far as they will go, even then you may find they are initially tight after
tightening the hub nut
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Markymark
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| posted on 19/7/18 at 09:29 PM |
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Thanks for the replies, sorry I meant, right down as far as they would go until they are hard against the central ridge, I didn't make that very
clear
So keep the answers coming
Mark
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hkp57
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| posted on 20/7/18 at 03:05 AM |
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I had same issue they feel really tight but trust the numbers, build it up set the torque to 310 to 350 Nm or 229 to 250 lbf / ft
They will feel tight as hell by hand but by the time you have a wheel on and they free off quick.
Failure to achieve these torque figures will result in the nut backing off, I had it happen on track and it pushed the pads back in resulting in no
brakes at the next big stop.
 
Description
[Edited on 20/7/18 by hkp57]
Fleet
SKC Raptor R - Hayabusa
Toyota C-HR Hybrid Limited Edition
Honda VFR1200 CrossTourer
DCT
Marlin Roadster 1800
Mercedes Vito 116 Sport
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CosKev3
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| posted on 20/7/18 at 07:03 AM |
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As above,They are really tight to turn with new bearings trying to turn the hub by hand.
Once a wheel is on,or use a bar between the studs they will turn 
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Markymark
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| posted on 20/7/18 at 10:23 AM |
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Thanks guys
So it turns out I'm not doing anything wrong!!!
I just can't believe how tight they are.
Mark
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jps
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| posted on 20/7/18 at 11:10 AM |
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quote:
Originally posted by Markymark
Thanks for the replies, sorry I meant, right down as far as they would go until they are hard against the central ridge, I didn't make that very
clear
So keep the answers coming
Mark
How did you drift them in? I have a packet of new bearings ready to fit once i've given the carriers a final coat of paint. Was considering
taking them down to the local garage to fit though.
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Markymark
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| posted on 20/7/18 at 12:10 PM |
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Found a thick flat disc of metal and tapped that to start with then used a punch to tap them right home. You just need something to start them off
squarely. Hope that helps.
Mark
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