Quote:
Originally Posted by adzii_nufc
You're only supposed to tighten them with an impact wrench to the point they can still be removed with manual tools (Standard OP at Nissan) If you're still tightening it to the point the impact wrench is juddering then they're doing it wrong. The fact is I've seen it done by mechanics over and over and I've seen people at NMUK get a bollocking for it. They hold the wrench in place till the thing is literally juddering not to mention warping the top. If anything, Mr K's point is completely valid.
Source: Standard OP documents at NMUK.
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Depends on the setting of the wrench. Also the wrench is only supposed to be used to get the nuts/studs to a point (where it judders as thats how an impact wrench works
got 6 of them here in the workshop and support vehicle) where they can be finished off using a torque wrench to the specified setting. All service manuals will specify a setting for which a mechanic will be expected to tighten to. Few owners manuals will specify a wheel change these days apart from to fit a spare for emergency purposes only and all manufacturers will expect the owner to get the original wheel properly refitted by a mechanic to replace the spare.
Nissan specify between 75ft/lb to 90ft/lb for most vehicles, that requires a hell of an effort to loosen with a short wrench as supplied with most vehicles and even then bodyweight may have to be used to loosen a nut after its corroded on after a year and even then it might not come loose.. Or is that Nissans fault?