In my car, the space between idler and tensioner bearing bolts and the chassis is so limited (as per the following picture) that you can't use a torque wrench. In fact, the torque wrench itself can be put in the area but you can't attach any socket to it. I had to use a ring spanner to tighten the bolts but first, I practiced with my torque wrench to get the feeling of the required torque specs (with other bolts on the car) to avoid over-tightening the bolts. Is there anyway to use a torque wrench in my next service? enter image description here

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    I've taken a socket and ground the length down to fit into such spaces. I know there are some "stubby" sockets on the market but they tend to be expensive.
    – jwh20
    Commented Aug 18, 2021 at 9:31
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    I would apply basic physics: Torque = Force * Distance, so take a spanner of x length which fits and pull with y force... Simple, just need to understand what you are doing.
    – Solar Mike
    Commented Aug 18, 2021 at 10:40
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    You can also get a narrow "break over" torque wrench such as here. The elbow folds when torque is exceeded. Commented Aug 18, 2021 at 19:01
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    Have you checked to see if you can access this area through the fender well? If so, an extension used properly will accurately allow you to torque these bolts. Commented Aug 18, 2021 at 21:57
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    Which car/engine do you have? If you tell us, someone may know how you get access.
    – HandyHowie
    Commented Aug 19, 2021 at 8:32


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