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  #11  
Old 02-21-2021, 06:34 PM
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I'll also admit that I *meant to replace the locknuts. But when ordering the giant box of parts for the entire front suspension overhaul, I ended up getting the wrong ones - luckily, I accidentally ordered a bag of the lower ball joint nuts that I hadn't even thought about replacing!

Ended up just reusing the old shock locknuts. The torque value on these was huge - like 180 ft-lbs I think? I gave myself an arm workout getting them off, but they cleaned themselves in the process.
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  #12  
Old 02-21-2021, 07:27 PM
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That's alot of toque on those bolts.

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  #13  
Old 02-21-2021, 10:09 PM
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Quote:
Originally Posted by puddinboo View Post
That's alot of toque on those bolts.

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172 lubricated 229 dry is spec for 16mm. 233/310 Nm. Giant bolt giant torque. Nothing like the 27mm axle nut not even sure my app goes that high though it does have 4" (which btw 1.1 million pounds shear strength).
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Old 02-21-2021, 10:15 PM
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I had to replace two of the bearings on mine and wife's car twice and also changed wife's axles so one set was removed and replaced 4x at least with no sign of wear. I use b Impact guns for removal and pretension before torque so they don't have the typical beat up look of using hand tools. They also have always been tight when removing the 2nd, 3rd, 4th time.
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  #15  
Old 02-21-2021, 10:16 PM
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229 ft lbs dry?
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Originally Posted by andrewwynn View Post
172 lubricated 229 dry is spec for 16mm. 233/310 Nm. Giant bolt giant torque. Nothing like the 27mm axle nut not even sure my app goes that high though it does have 4" (which btw 1.1 million pounds shear strength).
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Old 02-21-2021, 10:19 PM
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That is correct. That's not BMWs spec I would look that up. BMW typically specs 80-90% of proof load so you can overshoot 10-20% and not deform the fasteners. (except the bolts they intentionally stretch to yield like head bolts and the stiffening plate).
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  #17  
Old 02-21-2021, 10:31 PM
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I definitely will.
Good to know.

Thanks again for your input.
Quote:
Originally Posted by andrewwynn View Post
That is correct. That's not BMWs spec I would look that up. BMW typically specs 80-90% of proof load so you can overshoot 10-20% and not deform the fasteners. (except the bolts they intentionally stretch to yield like head bolts and the stiffening plate).
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  #18  
Old 02-22-2021, 11:39 AM
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I have reused the bolts and nut repeatedly with no bad things happening. No deformation. I just put blue loctite on them. Never had a problem.
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Old 02-22-2021, 03:16 PM
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A wire wheel for a regular drill will clean up bolts quickly and easily. IMO it's a must have for a DIYer.
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Old 02-22-2021, 04:54 PM
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Quote:
Originally Posted by Fifty150hs View Post
I have reused the bolts and nut repeatedly with no bad things happening. No deformation. I just put blue loctite on them. Never had a problem.
Same. TIS calls for 250Nm (184.39ft lb)

BMW calls for replacement of almost every suspension related nut/bolt during suspension servicing but this particular nut/bolt combo is not one of them.
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