08-13-2022, 07:46 AM | #1 |
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Pinch bolt tightening
Hi,
After some advice please re the front strut pinch bolts. I've been trying to track down a rattle on my car for a while, and today replaced them. I know the torque is 56nm, and I reached that and my torque wrench clicked. However, when I went to double check it, the bolt just carried on tightening further without the wrench clicking. I did ~1 extra turn, then decided that I better stop at the risk of snapping the bolt. I recalled that this happened a while ago as well when I changed the suspension. Please can you let me know if I should stop at the first torque reached indication, or do I carry on until the wrench is always clicking? Thanks! |
08-14-2022, 01:16 PM | #3 |
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Nut yes, bolt no. It's about two years since I did the suspending change,so not that old really.
I replaced it as I previously didn't do the bolt up at usual ride height and apparently that could cause issues. Replaced and torqued as above it hasn't made any difference to the knocking noise unfortunately. Just wondering if I need to tighten it more? |
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08-14-2022, 01:47 PM | #4 |
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Is your torque wrench of good quality and calibrated? In regards to your problem, I doubt this is the source of your rattle unless the bolt was extremely loose. The weight of the car is keeping the strut in the knuckle and on rebound, the unsprung weight is the only thing pulling it down. In the case of a loose strut moving up and down in the knuckle causing a rattle, you'd be able to tell by visible wear marks on the strut body.
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08-16-2022, 03:33 PM | #6 | ||
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TBH, with this, I was clutching at straws and it was a fairly last ditch effort to cure the rattle myself - regardless, it is very tight now. I did have an issue with clunking when I first changed the suspension, and that was due to a reused pinch bolt; the shock was coming slightly out of the cup on any sizable bump - a new bolt sorted it back then. Quote:
Cheers! |
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08-16-2022, 04:51 PM | #7 | |
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Quote:
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