Pulled into the parking lot this morning and off goes my idler pulley. (*&%. So because I'm dumb - I didn't realize what it was until I tried to turn into a row by my building. And again because I'm dumb, I went into work to let them know I was here (there) and then went out to find it. I didn't find it. No where. I suspect so do-gooder picked it up. In five minutes.

So the help me part: there are two sizes of pullies? 3.5" and 5"? How do I know which one to buy? Does it matter?

And the bonus question: what size bit for the pulley bolt? Its a star bit I think.

Alright - now I get to stress out for four hours until lunch...

 

Not sure on the exact size but I can tell you it's not the 5" pulley....never saw one that big but I could be wrong. Someone else will chime in here.

 

Which one is it?




<table border="1" cellpadding="3" cellspacing="0" width="70%"><tbody><tr><th valign="bottom">Item </th><th valign="bottom">Part Number </th><th valign="bottom">Description </th></tr><tr valign="top"><td>1 </td><td>10300 </td><td>Generator </td></tr><tr valign="top"><td>2 </td><td>8678 </td><td>Belt Idler Pulley </td></tr><tr valign="top"><td>3 </td><td>2E884 </td><td>A/C Clutch Pulley </td></tr><tr valign="top"><td>4 </td><td>2A451 </td><td>Vacuum Pump </td></tr><tr valign="top"><td>5 </td><td>3A733 </td><td>Power Steering Pump Pulley </td></tr><tr valign="top"><td>6 </td><td>6312 </td><td>Crankshaft Pulley </td></tr><tr valign="top"><td>7 </td><td>8509 </td><td>Water Pump Pulley </td></tr><tr valign="top"><td>8 </td><td>6B209 </td><td>Drive Belt Tensioner </td></tr><tr valign="top"><td>9 </td><td>8620 </td><td>Drive Belt</td></tr></tbody></table>

 

thanks for the reply cuda_jim


It was the idler pulley. $37 with bearing from autozone. I didn't have the right tools, but with the pulley gone so I could get the bolt out with vice-grips.
The ball bearings inside the bearing assembly were partially melted. Nice.