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2WD Rotor Install Question

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Old Jun 10, 2019 | 11:14 PM
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Default 2WD Rotor Install Question

Looking at the 2WD rotor selections on RockAuto, I see that some brands (Durago) instruct you to torque to 295 lb/ft, turn the rotor counterclockwise 5 times, and recheck the torque, or failure may occur. Is this critical to all brands or just Duragos? What is the 5 turns doing? Have you ever heard this procedure required of other brands?
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Old Jun 11, 2019 | 08:16 AM
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I saw this, but I can't imagine it does much other than ensuring the hub spins and check for tightness. I just got close to the 295 and buttoned everything up. No issues in the subsequent 62k miles.

Note, I'm not recommending this approach, just what I did. Manufacturers don't just make up torque specs just for fun, but many are just CYA on their part.
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Old Jun 11, 2019 | 08:20 AM
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Originally Posted by Mulestang
Looking at the 2WD rotor selections on RockAuto, I see that some brands (Durago) instruct you to torque to 295 lb/ft, turn the rotor counterclockwise 5 times, and recheck the torque, or failure may occur. Is this critical to all brands or just Duragos? What is the 5 turns doing? Have you ever heard this procedure required of other brands?
it just makes sure that the rotor is seated all the way and then torqued properly
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Old Jun 11, 2019 | 08:30 AM
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My torque wrench only went up to 250 so that’s what I torqued mine to... I didn’t spin anything either. I guess that’s to ensure the rotor isn’t binding up or rubbing something?
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Old Jun 12, 2019 | 11:39 AM
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295 is to ensure that the preload on the bearing is set properly. This torque spec is important for bearing life, but not so much for safety IMO. I bought the Tekton 3/4" tq wrench just for this job...
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Old Jun 12, 2019 | 06:23 PM
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Make sure you have a long pipe to help with torquing it. I'm not sure how its possible for someone to torque it down that much, even with a 300ft-lbs wrench, unless you are super strong or weigh a lot.
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Old Jun 12, 2019 | 08:38 PM
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Well, Bosch rotors replaced with warrantied units. Old Wagner TQ Semi-Metallics still had lots of material left, but I installed new Wagner TQ ceramics. Now lets see how long these bearings last.
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Old Jun 13, 2019 | 12:53 PM
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Originally Posted by ShirBlackspots
Make sure you have a long pipe to help with torquing it. I'm not sure how its possible for someone to torque it down that much, even with a 300ft-lbs wrench, unless you are super strong or weigh a lot.
Actually it's not bad at all. The 3/4" tq wrench is heavier and much longer than a 1/2".
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Old Jun 13, 2019 | 01:18 PM
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Originally Posted by 650NutKase
Actually it's not bad at all. The 3/4" tq wrench is heavier and much longer than a 1/2".
I need to get me a 3/4" torque wrench then, I already have a 150ft-lb 1/2" and a 1/4" inch pound wrench (I think it goes to a max of 50ft-lbs)
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Old Jun 13, 2019 | 03:46 PM
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Originally Posted by ShirBlackspots
I need to get me a 3/4" torque wrench then, I already have a 150ft-lb 1/2" and a 1/4" inch pound wrench (I think it goes to a max of 50ft-lbs)
yeah I think I paid 90 bucks on Amazon. No one here rents a tq wrench that goes to 300 ft/lbs.
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