I need to pull my ATI pulley off because my front main seal is leaking (should've replaced it when I put the pulley on, but it wasn't leaking then....) From the research I've done so far, I need a 5/16 12 point socket to remove the 3 bolts in the pulley that I then use to attach the puller to. What I don't know is what thread size bolts I need to thread into those bolt holes for the puller. Is there anybody that can save me a trip to the hardware store in the middle of this job?

 

The puller tool that Way sells comes with both M6 and M8 bolts for this purpose. I'm not sure which size fits the ATI.

 

Yeah, my worry is the the ati pulley will have a standard thread instead of metric since the bolt heads are 5/16. I’d really like to avoid a mid job trip to the hardware store.

 

They are m6 standard pitch (don't remember which pitch exactly)
I think I had to use m6 x 100mm for my puller. Lowes has some

 

Welp, I can tell you that it’s not m6 or m8 thread, I got one of the bolts out tonight and the thread didn’t match either of the bolts that come with the wmw puller, which are m6 and m8. From doing some more digging on ati’s site, I think they’re 3/8-24 or 3/8-16. I’ll give those a try next and post up when I find a definite answer. I also emailed ati to find out, but they’re out of office at a trade show until the 12th.

 

Another update: ATI emailed me back this morning, they're 5/16-18

 

Sorry about that, I could have swore they were m6.
My bad

Should stick in my brain somewhere now though.....