Thread: front crank o-ring

The o-ring does sit inside the recess at the engine end of the pulley. A little lube helps as it's something that has to 'pop' into position. It is a case of putting it on the crank first, then the woodruff key and then the pulley. If the pulley is a bit sticky to get over the woodruff key, use the damper and bolt to wind it on. Hopefully, when the pulley get to where it should be, the o-ring has stayed in the right place.

You can use a normal torque wrench to measure tension - but it will need to be a smaller 3/8 drive ( tight spaces)

You need a dial indicator torque wrench or as I did one of those cheap torque wrenches with the long needle bar, because you need to hold at the correct torque while tightening. You cant do that with a micrometer/deflecting bar type torque wrench because once it clicks at the proper torque you have no way of knowing (while tightening the locking bolt) whether you have backed off or applied more than you should. You can get the wrench at most parts places, they look like a long breaker bar with a thin (1/8") pointer needle that extends from the socket end down to the handle where it indicates torque on a gauage plate, you can hold one of these at the required torque and watch the tip of the needle against the guage plate while you or someone else tightens the locking bolt/nut, Regards Frank.