pigiron
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| posted on 24/11/14 at 01:39 PM |
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Sierra rear hub re-assembly advice
I'm looking for advice on the re-assembly of Sierra rear hubs when fitted to Haynes rear uprights ... please.
I'm unsure about the tapper bearings and their adjustment..... is the preload set simply by adjusting the retaining nut, i.e. nipping it up and
backing of the locking the nut a touch ... or maybe ... is there a crush tube / shims that I am missing?
I didn't have the benefit of stripping down a donor to learn from.
Regards to all.
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mcerd1
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| posted on 24/11/14 at 01:44 PM |
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once the outer races are pressed in the sierra bearings are just torqued up and that's it - they are not adjustable in any way
(torques are in the workshop manuals)
these are actually a slightly more modern design that the ye olde adjustable taper bearings 
they use nyloc nuts to stop them coming loose so you need new ones every time
also they have LH and RH threads - so you need to get them on the correct sides of the car so that they don't work there way loose as you drive
[Edited on 24/11/2014 by mcerd1]
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loggyboy
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| posted on 24/11/14 at 01:48 PM |
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Once the bearing is pressed in, the hub nut does the work.
Mistral Motorsport
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mcerd1
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| posted on 24/11/14 at 02:12 PM |
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these will explain it better than I can:
http://locostbuilders.co.uk/upload/Weel_Bearing_Cossie_Page_1.jpg
http://locostbuilders.co.uk/upload/Weel_Bearing_Cossie_Page_2.jpg
they are from the cossie manual but the principal is exactly the same, but I don't have the torque for the normal sierra ones to hand...
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mark chandler
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| posted on 24/11/14 at 06:26 PM |
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It's a lot, 250 lb/ft from memory so hang on that bar.
New bearings will feel like they are binding this will sort itself out in the first 50 miles.
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