Let me start off with the disclaimer that this is the most frustrating work I have performed on a car. I have been trying to remove the collar sleeve on my wife's 2004 S60R with absolutely no luck for the past two weeks. I have tried a puller, map gas , impact ratchet on the puller, along with a breaker bar on the puller. It will not budge. At this point, I am wondering if I should just remove the transmission to proceed with other means of removing it. However, I really want to avoid this if possible. One question I do have is, how long should I apply map gas to the outside of the collar. The longest I have held the gas to the collar is less than one minute. Is this long enough? Also, should I hammer then apply gas while the collar is under the puller load? Any help would be great as I am running out of creative adjectives to yell out loud!!!