The sleeve of my harmonic balancer came off, and bounced out of my car. I found the sleeve, which is the grooved part of the "ring" and it has a rubber inside. How difficult is it to replace this, or do I need to replace the whole pulley?
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The harmonic balancer has a grove where a square key which is already on the crankshaft holding the timing gear. Now all you have to do is look at your balancer you will see the grove cut out ok. As you put it in all you have to do it align the grove with the crankshaft key you should be able to see it before you install it. Once aligned just tap it in with a sledge and a piece of wood in the center so you do not do damage to the harmonic. I use a brass hammer. Now if the key came out with the balancer the slide key in first tapping it nicely and do not do any damage to it or the crank because it will be hard to slide the harmonic back on ok. Let me know good luck.
See the square grove on the harmonic in the center.
remove the belts ( radiator as well if the room is limited) Undo the big nut holding the balancer on ( use impact gun for this as it is difficult to hold the crankshaft) Use a balancer puller to get it off Take care it there is a CMP sensor near/ behind the balancer. Use a screw driver along side the shaft and pry out the old seal. Fit the new seal flush with the face of the housing. If there is a groove around the balancer from the old seal then either use a "speedie" sleeve from bearing suppliers) to repair it or get a new one. Refitting is the reverse procedure.
The above link is for a video how to replace the crankshaft sensor on a different vehicle than your ,but the procedure is the same for your vehicle. The Harmonic Balancer needs to be removed to access the sensor, which is the most difficult part of the job.
There many videos on how to remove the harmonic balancer, and how to replace the crankshaft sensor on the GM 3.8 engine. Do a search on the web ' how to remove the harmonic balancer GM 3.8 engine.'
Hope this helps. Good Luck!
Line up the keyslot on the balancer with the key on the crankshaft. Usually just tightening the bolt that keeps it in place is sufficient to intsall it. I am not sure how much pressure you will need to get it back on the crankshaft but it's easier to put one on than to take one off! Be sure and check it after a day or so. Just to make sure you got it back on and it hasnt loosened. I think there is a torque setting but without exact info, firmly installed should do.
the pulley on the crankshaft should have grooves in it for the belt, otherwise the belt will not turn. is the pulley broken off, get back to me. there are NO technical servise bulletins on this item,if you need more help get back to me, Thanks Ray
It sounds like the crankshaft position sensor has gone bad or either the wires to it.The sensor is located to the side of the harmonic balancer. I would suggest that you would take to an experienced mechanic to replace as the sensor has to be indexed to the balancer(set in a certain place).