Hi all. Sorry for asking this here but I'm leaving on a trip soon so need to check this detail. This is for a torque to yield bolt holding the belt drive sprocket to crankshaft on an ABA Jetta 2.0 gas engine in a Vanagon. I doubt the crank threads got damaged but would torquing this bolt too high damage (deform by pulling) the threads in crankshaft? If so, will the bolt work its' way out over time? The crank threads looked ok, I installed a new bolt. Since the over torqued bolt actually narrowed a bit about 1/2 way down the threads, it's likely the only thing that got damaged. The woodruff key and keyway look ok. Lesson: check your new torque wrench before you use it! The sprocket bolt was on REALLY tight. It took a 2' long extension on my breaker bar to break the bolt loose. I have an electric impact gun but no 12 point impact socket. To keep the crank from turning I put the van in gear, set the e-brake and I attempted to hold the pulley with a belt type pulley wrench. I used my new torque wrench for this job. As I kept turning the bolt, I felt no click on the wrench. Since the bolt was so hard to remove, I keep reefing pretty hard on this bolt then came to my senses. Testing the wrench on my bench, still no click. After zeroing the dial and resetting it to 66 ft lbs, the click worked. Neil.
-- Neil n Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay> |
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