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The day I finally stopped using impact guns on injector hold-down bolts
Pulled a set of injectors on a 7.3 Powerstroke last month and three bolts snapped off clean in the head, took me 8 hours to extract them. What finally tipped me off that I was overtightening was when my buddy asked why my torque wrench was still in the box collecting dust.
Has anyone else switched to hand torque only after snapping stuff off?
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taylor17423d ago
Funny how you have to break a bunch of stuff before you admit the torque wrench should have been the first tool out, not the last. I used to think my wrist was calibrated enough after a decade of turning wrenches but that kind of confidence costs you time and money. The real issue is those injector bolts are tiny compared to the torque impact guns can put out even on low settings. I switched to a beam style torque wrench for anything under 80 ft-lbs after I snapped a valve cover bolt on a Cummins and had to drill it blind. Now I just take the extra 30 seconds to set the wrench and know the bolt isn't going to snap halfway through the job. Your buddy was right to call out the torque wrench still being in the box that's usually the first sign you're winging it.
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robinson.paul23d ago
The part nobody talks about is how torque wrenches themselves lose calibration over time especially the click type if you store them wrong. Could be setting it right and still snapping bolts just because the tool lied to you.
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