수리 사례

2026. 6. 30. 작업

증상

Using Acura or Honda crankshaft pulley holding tool and not impact wrench when loosening the bolt

처리 내용

I wouldn't hesitate using an impact to loosen the crankshaft pulley retaining bolt. The reason for this is because even though there is an impact involved, it is a rotary impact. The crank itself would incur no damage, nor would the bearings. The bearings take a worse beating during normal operation than they would during crankshaft pulley retaining bolt removal (mind you with proper oil flow, bearings don't usually take a beating, anyway ... but that's a different subject.) With that said, if the engine was in the car this may be problematic. You may not be able to get to the crankshaft pulley retaining bolt with an impact wrench (most probably would not be able to get to it). Also, you'll noticed I emphasized the word loosen above. The reason for this is, while I would not hesitate to loosen most engine bolts using an impact, I would almost never utilize an impact gun to tighten one. Especially where the crankshaft pulley retaining bolt is concerned. The reason for this is you will m