Idler Pulley Bolt Stuck Solid - 986

[Monsterlime]

My alternator (or the voltage regulator) is shot on my 2000 Boxster, so have pretty much taken it all apart except for removing the idler pulley. I cannot get the bolt to shift at all. Even stuck a spanner on it and smacked it with a hammer several times, nothing. I'm leaving it overnight with some WD40 on it to see if it will loosen up, but has anyone got any tips?

I haven't even got to the "tap it to loosen the bush" part (although I have tried that as well). Quite frustrating! I don't really want to be defeated by something I cannot undo.

[Steve H]

What is the access like? What size bolt?

Usual answer if it's a big enough item would be use a nice long breaker bar, some of these things need a bit of weight to crack off.

[steveo3002]

breaker bar /cheater pipe on the spanner or a impact gun if theres room to get at it

[nj1052]

It may well have been fitted with thread lock. If so some heat will melt it and allow removal.

[Monsterlime]

WD40 overnight sorted it in the end. I don't have the right attachments for my impact driver (Amazon to the rescue). Unfortunately for naught as I sheared two screws off in the back of the alternator trying to change the voltage regulator.

Doh.